[www-releases] r290368 - Add 3.9.1 docs.
Tom Stellard via llvm-commits
llvm-commits at lists.llvm.org
Thu Dec 22 12:04:06 PST 2016
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/Modules.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/Modules.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/Modules.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/Modules.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,901 @@
+=======
+Modules
+=======
+
+.. contents::
+ :local:
+
+Introduction
+============
+Most software is built using a number of software libraries, including libraries supplied by the platform, internal libraries built as part of the software itself to provide structure, and third-party libraries. For each library, one needs to access both its interface (API) and its implementation. In the C family of languages, the interface to a library is accessed by including the appropriate header files(s):
+
+.. code-block:: c
+
+ #include <SomeLib.h>
+
+The implementation is handled separately by linking against the appropriate library. For example, by passing ``-lSomeLib`` to the linker.
+
+Modules provide an alternative, simpler way to use software libraries that provides better compile-time scalability and eliminates many of the problems inherent to using the C preprocessor to access the API of a library.
+
+Problems with the current model
+-------------------------------
+The ``#include`` mechanism provided by the C preprocessor is a very poor way to access the API of a library, for a number of reasons:
+
+* **Compile-time scalability**: Each time a header is included, the
+ compiler must preprocess and parse the text in that header and every
+ header it includes, transitively. This process must be repeated for
+ every translation unit in the application, which involves a huge
+ amount of redundant work. In a project with *N* translation units
+ and *M* headers included in each translation unit, the compiler is
+ performing *M x N* work even though most of the *M* headers are
+ shared among multiple translation units. C++ is particularly bad,
+ because the compilation model for templates forces a huge amount of
+ code into headers.
+
+* **Fragility**: ``#include`` directives are treated as textual
+ inclusion by the preprocessor, and are therefore subject to any
+ active macro definitions at the time of inclusion. If any of the
+ active macro definitions happens to collide with a name in the
+ library, it can break the library API or cause compilation failures
+ in the library header itself. For an extreme example,
+ ``#define std "The C++ Standard"`` and then include a standard
+ library header: the result is a horrific cascade of failures in the
+ C++ Standard Library's implementation. More subtle real-world
+ problems occur when the headers for two different libraries interact
+ due to macro collisions, and users are forced to reorder
+ ``#include`` directives or introduce ``#undef`` directives to break
+ the (unintended) dependency.
+
+* **Conventional workarounds**: C programmers have
+ adopted a number of conventions to work around the fragility of the
+ C preprocessor model. Include guards, for example, are required for
+ the vast majority of headers to ensure that multiple inclusion
+ doesn't break the compile. Macro names are written with
+ ``LONG_PREFIXED_UPPERCASE_IDENTIFIERS`` to avoid collisions, and some
+ library/framework developers even use ``__underscored`` names
+ in headers to avoid collisions with "normal" names that (by
+ convention) shouldn't even be macros. These conventions are a
+ barrier to entry for developers coming from non-C languages, are
+ boilerplate for more experienced developers, and make our headers
+ far uglier than they should be.
+
+* **Tool confusion**: In a C-based language, it is hard to build tools
+ that work well with software libraries, because the boundaries of
+ the libraries are not clear. Which headers belong to a particular
+ library, and in what order should those headers be included to
+ guarantee that they compile correctly? Are the headers C, C++,
+ Objective-C++, or one of the variants of these languages? What
+ declarations in those headers are actually meant to be part of the
+ API, and what declarations are present only because they had to be
+ written as part of the header file?
+
+Semantic import
+---------------
+Modules improve access to the API of software libraries by replacing the textual preprocessor inclusion model with a more robust, more efficient semantic model. From the user's perspective, the code looks only slightly different, because one uses an ``import`` declaration rather than a ``#include`` preprocessor directive:
+
+.. code-block:: c
+
+ import std.io; // pseudo-code; see below for syntax discussion
+
+However, this module import behaves quite differently from the corresponding ``#include <stdio.h>``: when the compiler sees the module import above, it loads a binary representation of the ``std.io`` module and makes its API available to the application directly. Preprocessor definitions that precede the import declaration have no impact on the API provided by ``std.io``, because the module itself was compiled as a separate, standalone module. Additionally, any linker flags required to use the ``std.io`` module will automatically be provided when the module is imported [#]_
+This semantic import model addresses many of the problems of the preprocessor inclusion model:
+
+* **Compile-time scalability**: The ``std.io`` module is only compiled once, and importing the module into a translation unit is a constant-time operation (independent of module system). Thus, the API of each software library is only parsed once, reducing the *M x N* compilation problem to an *M + N* problem.
+
+* **Fragility**: Each module is parsed as a standalone entity, so it has a consistent preprocessor environment. This completely eliminates the need for ``__underscored`` names and similarly defensive tricks. Moreover, the current preprocessor definitions when an import declaration is encountered are ignored, so one software library can not affect how another software library is compiled, eliminating include-order dependencies.
+
+* **Tool confusion**: Modules describe the API of software libraries, and tools can reason about and present a module as a representation of that API. Because modules can only be built standalone, tools can rely on the module definition to ensure that they get the complete API for the library. Moreover, modules can specify which languages they work with, so, e.g., one can not accidentally attempt to load a C++ module into a C program.
+
+Problems modules do not solve
+-----------------------------
+Many programming languages have a module or package system, and because of the variety of features provided by these languages it is important to define what modules do *not* do. In particular, all of the following are considered out-of-scope for modules:
+
+* **Rewrite the world's code**: It is not realistic to require applications or software libraries to make drastic or non-backward-compatible changes, nor is it feasible to completely eliminate headers. Modules must interoperate with existing software libraries and allow a gradual transition.
+
+* **Versioning**: Modules have no notion of version information. Programmers must still rely on the existing versioning mechanisms of the underlying language (if any exist) to version software libraries.
+
+* **Namespaces**: Unlike in some languages, modules do not imply any notion of namespaces. Thus, a struct declared in one module will still conflict with a struct of the same name declared in a different module, just as they would if declared in two different headers. This aspect is important for backward compatibility, because (for example) the mangled names of entities in software libraries must not change when introducing modules.
+
+* **Binary distribution of modules**: Headers (particularly C++ headers) expose the full complexity of the language. Maintaining a stable binary module format across architectures, compiler versions, and compiler vendors is technically infeasible.
+
+Using Modules
+=============
+To enable modules, pass the command-line flag ``-fmodules``. This will make any modules-enabled software libraries available as modules as well as introducing any modules-specific syntax. Additional `command-line parameters`_ are described in a separate section later.
+
+Objective-C Import declaration
+------------------------------
+Objective-C provides syntax for importing a module via an *@import declaration*, which imports the named module:
+
+.. parsed-literal::
+
+ @import std;
+
+The ``@import`` declaration above imports the entire contents of the ``std`` module (which would contain, e.g., the entire C or C++ standard library) and make its API available within the current translation unit. To import only part of a module, one may use dot syntax to specific a particular submodule, e.g.,
+
+.. parsed-literal::
+
+ @import std.io;
+
+Redundant import declarations are ignored, and one is free to import modules at any point within the translation unit, so long as the import declaration is at global scope.
+
+At present, there is no C or C++ syntax for import declarations. Clang
+will track the modules proposal in the C++ committee. See the section
+`Includes as imports`_ to see how modules get imported today.
+
+Includes as imports
+-------------------
+The primary user-level feature of modules is the import operation, which provides access to the API of software libraries. However, today's programs make extensive use of ``#include``, and it is unrealistic to assume that all of this code will change overnight. Instead, modules automatically translate ``#include`` directives into the corresponding module import. For example, the include directive
+
+.. code-block:: c
+
+ #include <stdio.h>
+
+will be automatically mapped to an import of the module ``std.io``. Even with specific ``import`` syntax in the language, this particular feature is important for both adoption and backward compatibility: automatic translation of ``#include`` to ``import`` allows an application to get the benefits of modules (for all modules-enabled libraries) without any changes to the application itself. Thus, users can easily use modules with one compiler while falling back to the preprocessor-inclusion mechanism with other compilers.
+
+.. note::
+
+ The automatic mapping of ``#include`` to ``import`` also solves an implementation problem: importing a module with a definition of some entity (say, a ``struct Point``) and then parsing a header containing another definition of ``struct Point`` would cause a redefinition error, even if it is the same ``struct Point``. By mapping ``#include`` to ``import``, the compiler can guarantee that it always sees just the already-parsed definition from the module.
+
+While building a module, ``#include_next`` is also supported, with one caveat.
+The usual behavior of ``#include_next`` is to search for the specified filename
+in the list of include paths, starting from the path *after* the one
+in which the current file was found.
+Because files listed in module maps are not found through include paths, a
+different strategy is used for ``#include_next`` directives in such files: the
+list of include paths is searched for the specified header name, to find the
+first include path that would refer to the current file. ``#include_next`` is
+interpreted as if the current file had been found in that path.
+If this search finds a file named by a module map, the ``#include_next``
+directive is translated into an import, just like for a ``#include``
+directive.``
+
+Module maps
+-----------
+The crucial link between modules and headers is described by a *module map*, which describes how a collection of existing headers maps on to the (logical) structure of a module. For example, one could imagine a module ``std`` covering the C standard library. Each of the C standard library headers (``<stdio.h>``, ``<stdlib.h>``, ``<math.h>``, etc.) would contribute to the ``std`` module, by placing their respective APIs into the corresponding submodule (``std.io``, ``std.lib``, ``std.math``, etc.). Having a list of the headers that are part of the ``std`` module allows the compiler to build the ``std`` module as a standalone entity, and having the mapping from header names to (sub)modules allows the automatic translation of ``#include`` directives to module imports.
+
+Module maps are specified as separate files (each named ``module.modulemap``) alongside the headers they describe, which allows them to be added to existing software libraries without having to change the library headers themselves (in most cases [#]_). The actual `Module map language`_ is described in a later section.
+
+.. note::
+
+ To actually see any benefits from modules, one first has to introduce module maps for the underlying C standard library and the libraries and headers on which it depends. The section `Modularizing a Platform`_ describes the steps one must take to write these module maps.
+
+One can use module maps without modules to check the integrity of the use of header files. To do this, use the ``-fimplicit-module-maps`` option instead of the ``-fmodules`` option, or use ``-fmodule-map-file=`` option to explicitly specify the module map files to load.
+
+Compilation model
+-----------------
+The binary representation of modules is automatically generated by the compiler on an as-needed basis. When a module is imported (e.g., by an ``#include`` of one of the module's headers), the compiler will spawn a second instance of itself [#]_, with a fresh preprocessing context [#]_, to parse just the headers in that module. The resulting Abstract Syntax Tree (AST) is then persisted into the binary representation of the module that is then loaded into translation unit where the module import was encountered.
+
+The binary representation of modules is persisted in the *module cache*. Imports of a module will first query the module cache and, if a binary representation of the required module is already available, will load that representation directly. Thus, a module's headers will only be parsed once per language configuration, rather than once per translation unit that uses the module.
+
+Modules maintain references to each of the headers that were part of the module build. If any of those headers changes, or if any of the modules on which a module depends change, then the module will be (automatically) recompiled. The process should never require any user intervention.
+
+Command-line parameters
+-----------------------
+``-fmodules``
+ Enable the modules feature.
+
+``-fimplicit-module-maps``
+ Enable implicit search for module map files named ``module.modulemap`` and similar. This option is implied by ``-fmodules``. If this is disabled with ``-fno-implicit-module-maps``, module map files will only be loaded if they are explicitly specified via ``-fmodule-map-file`` or transitively used by another module map file.
+
+``-fmodules-cache-path=<directory>``
+ Specify the path to the modules cache. If not provided, Clang will select a system-appropriate default.
+
+``-fno-autolink``
+ Disable automatic linking against the libraries associated with imported modules.
+
+``-fmodules-ignore-macro=macroname``
+ Instruct modules to ignore the named macro when selecting an appropriate module variant. Use this for macros defined on the command line that don't affect how modules are built, to improve sharing of compiled module files.
+
+``-fmodules-prune-interval=seconds``
+ Specify the minimum delay (in seconds) between attempts to prune the module cache. Module cache pruning attempts to clear out old, unused module files so that the module cache itself does not grow without bound. The default delay is large (604,800 seconds, or 7 days) because this is an expensive operation. Set this value to 0 to turn off pruning.
+
+``-fmodules-prune-after=seconds``
+ Specify the minimum time (in seconds) for which a file in the module cache must be unused (according to access time) before module pruning will remove it. The default delay is large (2,678,400 seconds, or 31 days) to avoid excessive module rebuilding.
+
+``-module-file-info <module file name>``
+ Debugging aid that prints information about a given module file (with a ``.pcm`` extension), including the language and preprocessor options that particular module variant was built with.
+
+``-fmodules-decluse``
+ Enable checking of module ``use`` declarations.
+
+``-fmodule-name=module-id``
+ Consider a source file as a part of the given module.
+
+``-fmodule-map-file=<file>``
+ Load the given module map file if a header from its directory or one of its subdirectories is loaded.
+
+``-fmodules-search-all``
+ If a symbol is not found, search modules referenced in the current module maps but not imported for symbols, so the error message can reference the module by name. Note that if the global module index has not been built before, this might take some time as it needs to build all the modules. Note that this option doesn't apply in module builds, to avoid the recursion.
+
+``-fno-implicit-modules``
+ All modules used by the build must be specified with ``-fmodule-file``.
+
+``-fmodule-file=<file>``
+ Load the given precompiled module file.
+
+Module Semantics
+================
+
+Modules are modeled as if each submodule were a separate translation unit, and a module import makes names from the other translation unit visible. Each submodule starts with a new preprocessor state and an empty translation unit.
+
+.. note::
+
+ This behavior is currently only approximated when building a module with submodules. Entities within a submodule that has already been built are visible when building later submodules in that module. This can lead to fragile modules that depend on the build order used for the submodules of the module, and should not be relied upon. This behavior is subject to change.
+
+As an example, in C, this implies that if two structs are defined in different submodules with the same name, those two types are distinct types (but may be *compatible* types if their definitions match). In C++, two structs defined with the same name in different submodules are the *same* type, and must be equivalent under C++'s One Definition Rule.
+
+.. note::
+
+ Clang currently only performs minimal checking for violations of the One Definition Rule.
+
+If any submodule of a module is imported into any part of a program, the entire top-level module is considered to be part of the program. As a consequence of this, Clang may diagnose conflicts between an entity declared in an unimported submodule and an entity declared in the current translation unit, and Clang may inline or devirtualize based on knowledge from unimported submodules.
+
+Macros
+------
+
+The C and C++ preprocessor assumes that the input text is a single linear buffer, but with modules this is not the case. It is possible to import two modules that have conflicting definitions for a macro (or where one ``#define``\s a macro and the other ``#undef``\ines it). The rules for handling macro definitions in the presence of modules are as follows:
+
+* Each definition and undefinition of a macro is considered to be a distinct entity.
+* Such entities are *visible* if they are from the current submodule or translation unit, or if they were exported from a submodule that has been imported.
+* A ``#define X`` or ``#undef X`` directive *overrides* all definitions of ``X`` that are visible at the point of the directive.
+* A ``#define`` or ``#undef`` directive is *active* if it is visible and no visible directive overrides it.
+* A set of macro directives is *consistent* if it consists of only ``#undef`` directives, or if all ``#define`` directives in the set define the macro name to the same sequence of tokens (following the usual rules for macro redefinitions).
+* If a macro name is used and the set of active directives is not consistent, the program is ill-formed. Otherwise, the (unique) meaning of the macro name is used.
+
+For example, suppose:
+
+* ``<stdio.h>`` defines a macro ``getc`` (and exports its ``#define``)
+* ``<cstdio>`` imports the ``<stdio.h>`` module and undefines the macro (and exports its ``#undef``)
+
+The ``#undef`` overrides the ``#define``, and a source file that imports both modules *in any order* will not see ``getc`` defined as a macro.
+
+Module Map Language
+===================
+
+.. warning::
+
+ The module map language is not currently guaranteed to be stable between major revisions of Clang.
+
+The module map language describes the mapping from header files to the
+logical structure of modules. To enable support for using a library as
+a module, one must write a ``module.modulemap`` file for that library. The
+``module.modulemap`` file is placed alongside the header files themselves,
+and is written in the module map language described below.
+
+.. note::
+ For compatibility with previous releases, if a module map file named
+ ``module.modulemap`` is not found, Clang will also search for a file named
+ ``module.map``. This behavior is deprecated and we plan to eventually
+ remove it.
+
+As an example, the module map file for the C standard library might look a bit like this:
+
+.. parsed-literal::
+
+ module std [system] [extern_c] {
+ module assert {
+ textual header "assert.h"
+ header "bits/assert-decls.h"
+ export *
+ }
+
+ module complex {
+ header "complex.h"
+ export *
+ }
+
+ module ctype {
+ header "ctype.h"
+ export *
+ }
+
+ module errno {
+ header "errno.h"
+ header "sys/errno.h"
+ export *
+ }
+
+ module fenv {
+ header "fenv.h"
+ export *
+ }
+
+ // ...more headers follow...
+ }
+
+Here, the top-level module ``std`` encompasses the whole C standard library. It has a number of submodules containing different parts of the standard library: ``complex`` for complex numbers, ``ctype`` for character types, etc. Each submodule lists one of more headers that provide the contents for that submodule. Finally, the ``export *`` command specifies that anything included by that submodule will be automatically re-exported.
+
+Lexical structure
+-----------------
+Module map files use a simplified form of the C99 lexer, with the same rules for identifiers, tokens, string literals, ``/* */`` and ``//`` comments. The module map language has the following reserved words; all other C identifiers are valid identifiers.
+
+.. parsed-literal::
+
+ ``config_macros`` ``export`` ``private``
+ ``conflict`` ``framework`` ``requires``
+ ``exclude`` ``header`` ``textual``
+ ``explicit`` ``link`` ``umbrella``
+ ``extern`` ``module`` ``use``
+
+Module map file
+---------------
+A module map file consists of a series of module declarations:
+
+.. parsed-literal::
+
+ *module-map-file*:
+ *module-declaration**
+
+Within a module map file, modules are referred to by a *module-id*, which uses periods to separate each part of a module's name:
+
+.. parsed-literal::
+
+ *module-id*:
+ *identifier* ('.' *identifier*)*
+
+Module declaration
+------------------
+A module declaration describes a module, including the headers that contribute to that module, its submodules, and other aspects of the module.
+
+.. parsed-literal::
+
+ *module-declaration*:
+ ``explicit``:sub:`opt` ``framework``:sub:`opt` ``module`` *module-id* *attributes*:sub:`opt` '{' *module-member** '}'
+ ``extern`` ``module`` *module-id* *string-literal*
+
+The *module-id* should consist of only a single *identifier*, which provides the name of the module being defined. Each module shall have a single definition.
+
+The ``explicit`` qualifier can only be applied to a submodule, i.e., a module that is nested within another module. The contents of explicit submodules are only made available when the submodule itself was explicitly named in an import declaration or was re-exported from an imported module.
+
+The ``framework`` qualifier specifies that this module corresponds to a Darwin-style framework. A Darwin-style framework (used primarily on Mac OS X and iOS) is contained entirely in directory ``Name.framework``, where ``Name`` is the name of the framework (and, therefore, the name of the module). That directory has the following layout:
+
+.. parsed-literal::
+
+ Name.framework/
+ Modules/module.modulemap Module map for the framework
+ Headers/ Subdirectory containing framework headers
+ Frameworks/ Subdirectory containing embedded frameworks
+ Resources/ Subdirectory containing additional resources
+ Name Symbolic link to the shared library for the framework
+
+The ``system`` attribute specifies that the module is a system module. When a system module is rebuilt, all of the module's headers will be considered system headers, which suppresses warnings. This is equivalent to placing ``#pragma GCC system_header`` in each of the module's headers. The form of attributes is described in the section Attributes_, below.
+
+The ``extern_c`` attribute specifies that the module contains C code that can be used from within C++. When such a module is built for use in C++ code, all of the module's headers will be treated as if they were contained within an implicit ``extern "C"`` block. An import for a module with this attribute can appear within an ``extern "C"`` block. No other restrictions are lifted, however: the module currently cannot be imported within an ``extern "C"`` block in a namespace.
+
+Modules can have a number of different kinds of members, each of which is described below:
+
+.. parsed-literal::
+
+ *module-member*:
+ *requires-declaration*
+ *header-declaration*
+ *umbrella-dir-declaration*
+ *submodule-declaration*
+ *export-declaration*
+ *use-declaration*
+ *link-declaration*
+ *config-macros-declaration*
+ *conflict-declaration*
+
+An extern module references a module defined by the *module-id* in a file given by the *string-literal*. The file can be referenced either by an absolute path or by a path relative to the current map file.
+
+Requires declaration
+~~~~~~~~~~~~~~~~~~~~
+A *requires-declaration* specifies the requirements that an importing translation unit must satisfy to use the module.
+
+.. parsed-literal::
+
+ *requires-declaration*:
+ ``requires`` *feature-list*
+
+ *feature-list*:
+ *feature* (',' *feature*)*
+
+ *feature*:
+ ``!``:sub:`opt` *identifier*
+
+The requirements clause allows specific modules or submodules to specify that they are only accessible with certain language dialects or on certain platforms. The feature list is a set of identifiers, defined below. If any of the features is not available in a given translation unit, that translation unit shall not import the module. The optional ``!`` indicates that a feature is incompatible with the module.
+
+The following features are defined:
+
+altivec
+ The target supports AltiVec.
+
+blocks
+ The "blocks" language feature is available.
+
+cplusplus
+ C++ support is available.
+
+cplusplus11
+ C++11 support is available.
+
+objc
+ Objective-C support is available.
+
+objc_arc
+ Objective-C Automatic Reference Counting (ARC) is available
+
+opencl
+ OpenCL is available
+
+tls
+ Thread local storage is available.
+
+*target feature*
+ A specific target feature (e.g., ``sse4``, ``avx``, ``neon``) is available.
+
+
+**Example:** The ``std`` module can be extended to also include C++ and C++11 headers using a *requires-declaration*:
+
+.. parsed-literal::
+
+ module std {
+ // C standard library...
+
+ module vector {
+ requires cplusplus
+ header "vector"
+ }
+
+ module type_traits {
+ requires cplusplus11
+ header "type_traits"
+ }
+ }
+
+Header declaration
+~~~~~~~~~~~~~~~~~~
+A header declaration specifies that a particular header is associated with the enclosing module.
+
+.. parsed-literal::
+
+ *header-declaration*:
+ ``private``:sub:`opt` ``textual``:sub:`opt` ``header`` *string-literal*
+ ``umbrella`` ``header`` *string-literal*
+ ``exclude`` ``header`` *string-literal*
+
+A header declaration that does not contain ``exclude`` nor ``textual`` specifies a header that contributes to the enclosing module. Specifically, when the module is built, the named header will be parsed and its declarations will be (logically) placed into the enclosing submodule.
+
+A header with the ``umbrella`` specifier is called an umbrella header. An umbrella header includes all of the headers within its directory (and any subdirectories), and is typically used (in the ``#include`` world) to easily access the full API provided by a particular library. With modules, an umbrella header is a convenient shortcut that eliminates the need to write out ``header`` declarations for every library header. A given directory can only contain a single umbrella header.
+
+.. note::
+ Any headers not included by the umbrella header should have
+ explicit ``header`` declarations. Use the
+ ``-Wincomplete-umbrella`` warning option to ask Clang to complain
+ about headers not covered by the umbrella header or the module map.
+
+A header with the ``private`` specifier may not be included from outside the module itself.
+
+A header with the ``textual`` specifier will not be compiled when the module is
+built, and will be textually included if it is named by a ``#include``
+directive. However, it is considered to be part of the module for the purpose
+of checking *use-declaration*\s, and must still be a lexically-valid header
+file. In the future, we intend to pre-tokenize such headers and include the
+token sequence within the prebuilt module representation.
+
+A header with the ``exclude`` specifier is excluded from the module. It will not be included when the module is built, nor will it be considered to be part of the module, even if an ``umbrella`` header or directory would otherwise make it part of the module.
+
+**Example:** The C header ``assert.h`` is an excellent candidate for a textual header, because it is meant to be included multiple times (possibly with different ``NDEBUG`` settings). However, declarations within it should typically be split into a separate modular header.
+
+.. parsed-literal::
+
+ module std [system] {
+ textual header "assert.h"
+ }
+
+A given header shall not be referenced by more than one *header-declaration*.
+
+Umbrella directory declaration
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+An umbrella directory declaration specifies that all of the headers in the specified directory should be included within the module.
+
+.. parsed-literal::
+
+ *umbrella-dir-declaration*:
+ ``umbrella`` *string-literal*
+
+The *string-literal* refers to a directory. When the module is built, all of the header files in that directory (and its subdirectories) are included in the module.
+
+An *umbrella-dir-declaration* shall not refer to the same directory as the location of an umbrella *header-declaration*. In other words, only a single kind of umbrella can be specified for a given directory.
+
+.. note::
+
+ Umbrella directories are useful for libraries that have a large number of headers but do not have an umbrella header.
+
+
+Submodule declaration
+~~~~~~~~~~~~~~~~~~~~~
+Submodule declarations describe modules that are nested within their enclosing module.
+
+.. parsed-literal::
+
+ *submodule-declaration*:
+ *module-declaration*
+ *inferred-submodule-declaration*
+
+A *submodule-declaration* that is a *module-declaration* is a nested module. If the *module-declaration* has a ``framework`` specifier, the enclosing module shall have a ``framework`` specifier; the submodule's contents shall be contained within the subdirectory ``Frameworks/SubName.framework``, where ``SubName`` is the name of the submodule.
+
+A *submodule-declaration* that is an *inferred-submodule-declaration* describes a set of submodules that correspond to any headers that are part of the module but are not explicitly described by a *header-declaration*.
+
+.. parsed-literal::
+
+ *inferred-submodule-declaration*:
+ ``explicit``:sub:`opt` ``framework``:sub:`opt` ``module`` '*' *attributes*:sub:`opt` '{' *inferred-submodule-member** '}'
+
+ *inferred-submodule-member*:
+ ``export`` '*'
+
+A module containing an *inferred-submodule-declaration* shall have either an umbrella header or an umbrella directory. The headers to which the *inferred-submodule-declaration* applies are exactly those headers included by the umbrella header (transitively) or included in the module because they reside within the umbrella directory (or its subdirectories).
+
+For each header included by the umbrella header or in the umbrella directory that is not named by a *header-declaration*, a module declaration is implicitly generated from the *inferred-submodule-declaration*. The module will:
+
+* Have the same name as the header (without the file extension)
+* Have the ``explicit`` specifier, if the *inferred-submodule-declaration* has the ``explicit`` specifier
+* Have the ``framework`` specifier, if the
+ *inferred-submodule-declaration* has the ``framework`` specifier
+* Have the attributes specified by the \ *inferred-submodule-declaration*
+* Contain a single *header-declaration* naming that header
+* Contain a single *export-declaration* ``export *``, if the \ *inferred-submodule-declaration* contains the \ *inferred-submodule-member* ``export *``
+
+**Example:** If the subdirectory "MyLib" contains the headers ``A.h`` and ``B.h``, then the following module map:
+
+.. parsed-literal::
+
+ module MyLib {
+ umbrella "MyLib"
+ explicit module * {
+ export *
+ }
+ }
+
+is equivalent to the (more verbose) module map:
+
+.. parsed-literal::
+
+ module MyLib {
+ explicit module A {
+ header "A.h"
+ export *
+ }
+
+ explicit module B {
+ header "B.h"
+ export *
+ }
+ }
+
+Export declaration
+~~~~~~~~~~~~~~~~~~
+An *export-declaration* specifies which imported modules will automatically be re-exported as part of a given module's API.
+
+.. parsed-literal::
+
+ *export-declaration*:
+ ``export`` *wildcard-module-id*
+
+ *wildcard-module-id*:
+ *identifier*
+ '*'
+ *identifier* '.' *wildcard-module-id*
+
+The *export-declaration* names a module or a set of modules that will be re-exported to any translation unit that imports the enclosing module. Each imported module that matches the *wildcard-module-id* up to, but not including, the first ``*`` will be re-exported.
+
+**Example:** In the following example, importing ``MyLib.Derived`` also provides the API for ``MyLib.Base``:
+
+.. parsed-literal::
+
+ module MyLib {
+ module Base {
+ header "Base.h"
+ }
+
+ module Derived {
+ header "Derived.h"
+ export Base
+ }
+ }
+
+Note that, if ``Derived.h`` includes ``Base.h``, one can simply use a wildcard export to re-export everything ``Derived.h`` includes:
+
+.. parsed-literal::
+
+ module MyLib {
+ module Base {
+ header "Base.h"
+ }
+
+ module Derived {
+ header "Derived.h"
+ export *
+ }
+ }
+
+.. note::
+
+ The wildcard export syntax ``export *`` re-exports all of the
+ modules that were imported in the actual header file. Because
+ ``#include`` directives are automatically mapped to module imports,
+ ``export *`` provides the same transitive-inclusion behavior
+ provided by the C preprocessor, e.g., importing a given module
+ implicitly imports all of the modules on which it depends.
+ Therefore, liberal use of ``export *`` provides excellent backward
+ compatibility for programs that rely on transitive inclusion (i.e.,
+ all of them).
+
+Use declaration
+~~~~~~~~~~~~~~~
+A *use-declaration* specifies another module that the current top-level module
+intends to use. When the option *-fmodules-decluse* is specified, a module can
+only use other modules that are explicitly specified in this way.
+
+.. parsed-literal::
+
+ *use-declaration*:
+ ``use`` *module-id*
+
+**Example:** In the following example, use of A from C is not declared, so will trigger a warning.
+
+.. parsed-literal::
+
+ module A {
+ header "a.h"
+ }
+
+ module B {
+ header "b.h"
+ }
+
+ module C {
+ header "c.h"
+ use B
+ }
+
+When compiling a source file that implements a module, use the option
+``-fmodule-name=module-id`` to indicate that the source file is logically part
+of that module.
+
+The compiler at present only applies restrictions to the module directly being built.
+
+Link declaration
+~~~~~~~~~~~~~~~~
+A *link-declaration* specifies a library or framework against which a program should be linked if the enclosing module is imported in any translation unit in that program.
+
+.. parsed-literal::
+
+ *link-declaration*:
+ ``link`` ``framework``:sub:`opt` *string-literal*
+
+The *string-literal* specifies the name of the library or framework against which the program should be linked. For example, specifying "clangBasic" would instruct the linker to link with ``-lclangBasic`` for a Unix-style linker.
+
+A *link-declaration* with the ``framework`` specifies that the linker should link against the named framework, e.g., with ``-framework MyFramework``.
+
+.. note::
+
+ Automatic linking with the ``link`` directive is not yet widely
+ implemented, because it requires support from both the object file
+ format and the linker. The notion is similar to Microsoft Visual
+ Studio's ``#pragma comment(lib...)``.
+
+Configuration macros declaration
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+The *config-macros-declaration* specifies the set of configuration macros that have an effect on the API of the enclosing module.
+
+.. parsed-literal::
+
+ *config-macros-declaration*:
+ ``config_macros`` *attributes*:sub:`opt` *config-macro-list*:sub:`opt`
+
+ *config-macro-list*:
+ *identifier* (',' *identifier*)*
+
+Each *identifier* in the *config-macro-list* specifies the name of a macro. The compiler is required to maintain different variants of the given module for differing definitions of any of the named macros.
+
+A *config-macros-declaration* shall only be present on a top-level module, i.e., a module that is not nested within an enclosing module.
+
+The ``exhaustive`` attribute specifies that the list of macros in the *config-macros-declaration* is exhaustive, meaning that no other macro definition is intended to have an effect on the API of that module.
+
+.. note::
+
+ The ``exhaustive`` attribute implies that any macro definitions
+ for macros not listed as configuration macros should be ignored
+ completely when building the module. As an optimization, the
+ compiler could reduce the number of unique module variants by not
+ considering these non-configuration macros. This optimization is not
+ yet implemented in Clang.
+
+A translation unit shall not import the same module under different definitions of the configuration macros.
+
+.. note::
+
+ Clang implements a weak form of this requirement: the definitions
+ used for configuration macros are fixed based on the definitions
+ provided by the command line. If an import occurs and the definition
+ of any configuration macro has changed, the compiler will produce a
+ warning (under the control of ``-Wconfig-macros``).
+
+**Example:** A logging library might provide different API (e.g., in the form of different definitions for a logging macro) based on the ``NDEBUG`` macro setting:
+
+.. parsed-literal::
+
+ module MyLogger {
+ umbrella header "MyLogger.h"
+ config_macros [exhaustive] NDEBUG
+ }
+
+Conflict declarations
+~~~~~~~~~~~~~~~~~~~~~
+A *conflict-declaration* describes a case where the presence of two different modules in the same translation unit is likely to cause a problem. For example, two modules may provide similar-but-incompatible functionality.
+
+.. parsed-literal::
+
+ *conflict-declaration*:
+ ``conflict`` *module-id* ',' *string-literal*
+
+The *module-id* of the *conflict-declaration* specifies the module with which the enclosing module conflicts. The specified module shall not have been imported in the translation unit when the enclosing module is imported.
+
+The *string-literal* provides a message to be provided as part of the compiler diagnostic when two modules conflict.
+
+.. note::
+
+ Clang emits a warning (under the control of ``-Wmodule-conflict``)
+ when a module conflict is discovered.
+
+**Example:**
+
+.. parsed-literal::
+
+ module Conflicts {
+ explicit module A {
+ header "conflict_a.h"
+ conflict B, "we just don't like B"
+ }
+
+ module B {
+ header "conflict_b.h"
+ }
+ }
+
+
+Attributes
+----------
+Attributes are used in a number of places in the grammar to describe specific behavior of other declarations. The format of attributes is fairly simple.
+
+.. parsed-literal::
+
+ *attributes*:
+ *attribute* *attributes*:sub:`opt`
+
+ *attribute*:
+ '[' *identifier* ']'
+
+Any *identifier* can be used as an attribute, and each declaration specifies what attributes can be applied to it.
+
+Private Module Map Files
+------------------------
+Module map files are typically named ``module.modulemap`` and live
+either alongside the headers they describe or in a parent directory of
+the headers they describe. These module maps typically describe all of
+the API for the library.
+
+However, in some cases, the presence or absence of particular headers
+is used to distinguish between the "public" and "private" APIs of a
+particular library. For example, a library may contain the headers
+``Foo.h`` and ``Foo_Private.h``, providing public and private APIs,
+respectively. Additionally, ``Foo_Private.h`` may only be available on
+some versions of library, and absent in others. One cannot easily
+express this with a single module map file in the library:
+
+.. parsed-literal::
+
+ module Foo {
+ header "Foo.h"
+
+ explicit module Private {
+ header "Foo_Private.h"
+ }
+ }
+
+
+because the header ``Foo_Private.h`` won't always be available. The
+module map file could be customized based on whether
+``Foo_Private.h`` is available or not, but doing so requires custom
+build machinery.
+
+Private module map files, which are named ``module.private.modulemap``
+(or, for backward compatibility, ``module_private.map``), allow one to
+augment the primary module map file with an additional submodule. For
+example, we would split the module map file above into two module map
+files:
+
+.. code-block:: c
+
+ /* module.modulemap */
+ module Foo {
+ header "Foo.h"
+ }
+
+ /* module.private.modulemap */
+ explicit module Foo.Private {
+ header "Foo_Private.h"
+ }
+
+
+When a ``module.private.modulemap`` file is found alongside a
+``module.modulemap`` file, it is loaded after the ``module.modulemap``
+file. In our example library, the ``module.private.modulemap`` file
+would be available when ``Foo_Private.h`` is available, making it
+easier to split a library's public and private APIs along header
+boundaries.
+
+Modularizing a Platform
+=======================
+To get any benefit out of modules, one needs to introduce module maps for software libraries starting at the bottom of the stack. This typically means introducing a module map covering the operating system's headers and the C standard library headers (in ``/usr/include``, for a Unix system).
+
+The module maps will be written using the `module map language`_, which provides the tools necessary to describe the mapping between headers and modules. Because the set of headers differs from one system to the next, the module map will likely have to be somewhat customized for, e.g., a particular distribution and version of the operating system. Moreover, the system headers themselves may require some modification, if they exhibit any anti-patterns that break modules. Such common patterns are described below.
+
+**Macro-guarded copy-and-pasted definitions**
+ System headers vend core types such as ``size_t`` for users. These types are often needed in a number of system headers, and are almost trivial to write. Hence, it is fairly common to see a definition such as the following copy-and-pasted throughout the headers:
+
+ .. parsed-literal::
+
+ #ifndef _SIZE_T
+ #define _SIZE_T
+ typedef __SIZE_TYPE__ size_t;
+ #endif
+
+ Unfortunately, when modules compiles all of the C library headers together into a single module, only the first actual type definition of ``size_t`` will be visible, and then only in the submodule corresponding to the lucky first header. Any other headers that have copy-and-pasted versions of this pattern will *not* have a definition of ``size_t``. Importing the submodule corresponding to one of those headers will therefore not yield ``size_t`` as part of the API, because it wasn't there when the header was parsed. The fix for this problem is either to pull the copied declarations into a common header that gets included everywhere ``size_t`` is part of the API, or to eliminate the ``#ifndef`` and redefine the ``size_t`` type. The latter works for C++ headers and C11, but will cause an error for non-modules C90/C99, where redefinition of ``typedefs`` is not permitted.
+
+**Conflicting definitions**
+ Different system headers may provide conflicting definitions for various macros, functions, or types. These conflicting definitions don't tend to cause problems in a pre-modules world unless someone happens to include both headers in one translation unit. Since the fix is often simply "don't do that", such problems persist. Modules requires that the conflicting definitions be eliminated or that they be placed in separate modules (the former is generally the better answer).
+
+**Missing includes**
+ Headers are often missing ``#include`` directives for headers that they actually depend on. As with the problem of conflicting definitions, this only affects unlucky users who don't happen to include headers in the right order. With modules, the headers of a particular module will be parsed in isolation, so the module may fail to build if there are missing includes.
+
+**Headers that vend multiple APIs at different times**
+ Some systems have headers that contain a number of different kinds of API definitions, only some of which are made available with a given include. For example, the header may vend ``size_t`` only when the macro ``__need_size_t`` is defined before that header is included, and also vend ``wchar_t`` only when the macro ``__need_wchar_t`` is defined. Such headers are often included many times in a single translation unit, and will have no include guards. There is no sane way to map this header to a submodule. One can either eliminate the header (e.g., by splitting it into separate headers, one per actual API) or simply ``exclude`` it in the module map.
+
+To detect and help address some of these problems, the ``clang-tools-extra`` repository contains a ``modularize`` tool that parses a set of given headers and attempts to detect these problems and produce a report. See the tool's in-source documentation for information on how to check your system or library headers.
+
+Future Directions
+=================
+Modules support is under active development, and there are many opportunities remaining to improve it. Here are a few ideas:
+
+**Detect unused module imports**
+ Unlike with ``#include`` directives, it should be fairly simple to track whether a directly-imported module has ever been used. By doing so, Clang can emit ``unused import`` or ``unused #include`` diagnostics, including Fix-Its to remove the useless imports/includes.
+
+**Fix-Its for missing imports**
+ It's fairly common for one to make use of some API while writing code, only to get a compiler error about "unknown type" or "no function named" because the corresponding header has not been included. Clang can detect such cases and auto-import the required module, but should provide a Fix-It to add the import.
+
+**Improve modularize**
+ The modularize tool is both extremely important (for deployment) and extremely crude. It needs better UI, better detection of problems (especially for C++), and perhaps an assistant mode to help write module maps for you.
+
+Where To Learn More About Modules
+=================================
+The Clang source code provides additional information about modules:
+
+``clang/lib/Headers/module.modulemap``
+ Module map for Clang's compiler-specific header files.
+
+``clang/test/Modules/``
+ Tests specifically related to modules functionality.
+
+``clang/include/clang/Basic/Module.h``
+ The ``Module`` class in this header describes a module, and is used throughout the compiler to implement modules.
+
+``clang/include/clang/Lex/ModuleMap.h``
+ The ``ModuleMap`` class in this header describes the full module map, consisting of all of the module map files that have been parsed, and providing facilities for looking up module maps and mapping between modules and headers (in both directions).
+
+PCHInternals_
+ Information about the serialized AST format used for precompiled headers and modules. The actual implementation is in the ``clangSerialization`` library.
+
+.. [#] Automatic linking against the libraries of modules requires specific linker support, which is not widely available.
+
+.. [#] There are certain anti-patterns that occur in headers, particularly system headers, that cause problems for modules. The section `Modularizing a Platform`_ describes some of them.
+
+.. [#] The second instance is actually a new thread within the current process, not a separate process. However, the original compiler instance is blocked on the execution of this thread.
+
+.. [#] The preprocessing context in which the modules are parsed is actually dependent on the command-line options provided to the compiler, including the language dialect and any ``-D`` options. However, the compiled modules for different command-line options are kept distinct, and any preprocessor directives that occur within the translation unit are ignored. See the section on the `Configuration macros declaration`_ for more information.
+
+.. _PCHInternals: PCHInternals.html
+
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/ObjectiveCLiterals.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/ObjectiveCLiterals.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/ObjectiveCLiterals.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/ObjectiveCLiterals.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,606 @@
+====================
+Objective-C Literals
+====================
+
+Introduction
+============
+
+Three new features were introduced into clang at the same time:
+*NSNumber Literals* provide a syntax for creating ``NSNumber`` from
+scalar literal expressions; *Collection Literals* provide a short-hand
+for creating arrays and dictionaries; *Object Subscripting* provides a
+way to use subscripting with Objective-C objects. Users of Apple
+compiler releases can use these features starting with the Apple LLVM
+Compiler 4.0. Users of open-source LLVM.org compiler releases can use
+these features starting with clang v3.1.
+
+These language additions simplify common Objective-C programming
+patterns, make programs more concise, and improve the safety of
+container creation.
+
+This document describes how the features are implemented in clang, and
+how to use them in your own programs.
+
+NSNumber Literals
+=================
+
+The framework class ``NSNumber`` is used to wrap scalar values inside
+objects: signed and unsigned integers (``char``, ``short``, ``int``,
+``long``, ``long long``), floating point numbers (``float``,
+``double``), and boolean values (``BOOL``, C++ ``bool``). Scalar values
+wrapped in objects are also known as *boxed* values.
+
+In Objective-C, any character, numeric or boolean literal prefixed with
+the ``'@'`` character will evaluate to a pointer to an ``NSNumber``
+object initialized with that value. C's type suffixes may be used to
+control the size of numeric literals.
+
+Examples
+--------
+
+The following program illustrates the rules for ``NSNumber`` literals:
+
+.. code-block:: objc
+
+ void main(int argc, const char *argv[]) {
+ // character literals.
+ NSNumber *theLetterZ = @'Z'; // equivalent to [NSNumber numberWithChar:'Z']
+
+ // integral literals.
+ NSNumber *fortyTwo = @42; // equivalent to [NSNumber numberWithInt:42]
+ NSNumber *fortyTwoUnsigned = @42U; // equivalent to [NSNumber numberWithUnsignedInt:42U]
+ NSNumber *fortyTwoLong = @42L; // equivalent to [NSNumber numberWithLong:42L]
+ NSNumber *fortyTwoLongLong = @42LL; // equivalent to [NSNumber numberWithLongLong:42LL]
+
+ // floating point literals.
+ NSNumber *piFloat = @3.141592654F; // equivalent to [NSNumber numberWithFloat:3.141592654F]
+ NSNumber *piDouble = @3.1415926535; // equivalent to [NSNumber numberWithDouble:3.1415926535]
+
+ // BOOL literals.
+ NSNumber *yesNumber = @YES; // equivalent to [NSNumber numberWithBool:YES]
+ NSNumber *noNumber = @NO; // equivalent to [NSNumber numberWithBool:NO]
+
+ #ifdef __cplusplus
+ NSNumber *trueNumber = @true; // equivalent to [NSNumber numberWithBool:(BOOL)true]
+ NSNumber *falseNumber = @false; // equivalent to [NSNumber numberWithBool:(BOOL)false]
+ #endif
+ }
+
+Discussion
+----------
+
+NSNumber literals only support literal scalar values after the ``'@'``.
+Consequently, ``@INT_MAX`` works, but ``@INT_MIN`` does not, because
+they are defined like this:
+
+.. code-block:: objc
+
+ #define INT_MAX 2147483647 /* max value for an int */
+ #define INT_MIN (-2147483647-1) /* min value for an int */
+
+The definition of ``INT_MIN`` is not a simple literal, but a
+parenthesized expression. Parenthesized expressions are supported using
+the `boxed expression <#objc_boxed_expressions>`_ syntax, which is
+described in the next section.
+
+Because ``NSNumber`` does not currently support wrapping ``long double``
+values, the use of a ``long double NSNumber`` literal (e.g.
+``@123.23L``) will be rejected by the compiler.
+
+Previously, the ``BOOL`` type was simply a typedef for ``signed char``,
+and ``YES`` and ``NO`` were macros that expand to ``(BOOL)1`` and
+``(BOOL)0`` respectively. To support ``@YES`` and ``@NO`` expressions,
+these macros are now defined using new language keywords in
+``<objc/objc.h>``:
+
+.. code-block:: objc
+
+ #if __has_feature(objc_bool)
+ #define YES __objc_yes
+ #define NO __objc_no
+ #else
+ #define YES ((BOOL)1)
+ #define NO ((BOOL)0)
+ #endif
+
+The compiler implicitly converts ``__objc_yes`` and ``__objc_no`` to
+``(BOOL)1`` and ``(BOOL)0``. The keywords are used to disambiguate
+``BOOL`` and integer literals.
+
+Objective-C++ also supports ``@true`` and ``@false`` expressions, which
+are equivalent to ``@YES`` and ``@NO``.
+
+Boxed Expressions
+=================
+
+Objective-C provides a new syntax for boxing C expressions:
+
+.. code-block:: objc
+
+ @( <expression> )
+
+Expressions of scalar (numeric, enumerated, BOOL), C string pointer
+and some C structures (via NSValue) are supported:
+
+.. code-block:: objc
+
+ // numbers.
+ NSNumber *smallestInt = @(-INT_MAX - 1); // [NSNumber numberWithInt:(-INT_MAX - 1)]
+ NSNumber *piOverTwo = @(M_PI / 2); // [NSNumber numberWithDouble:(M_PI / 2)]
+
+ // enumerated types.
+ typedef enum { Red, Green, Blue } Color;
+ NSNumber *favoriteColor = @(Green); // [NSNumber numberWithInt:((int)Green)]
+
+ // strings.
+ NSString *path = @(getenv("PATH")); // [NSString stringWithUTF8String:(getenv("PATH"))]
+ NSArray *pathComponents = [path componentsSeparatedByString:@":"];
+
+ // structs.
+ NSValue *center = @(view.center); // Point p = view.center;
+ // [NSValue valueWithBytes:&p objCType:@encode(Point)];
+ NSValue *frame = @(view.frame); // Rect r = view.frame;
+ // [NSValue valueWithBytes:&r objCType:@encode(Rect)];
+
+Boxed Enums
+-----------
+
+Cocoa frameworks frequently define constant values using *enums.*
+Although enum values are integral, they may not be used directly as
+boxed literals (this avoids conflicts with future ``'@'``-prefixed
+Objective-C keywords). Instead, an enum value must be placed inside a
+boxed expression. The following example demonstrates configuring an
+``AVAudioRecorder`` using a dictionary that contains a boxed enumeration
+value:
+
+.. code-block:: objc
+
+ enum {
+ AVAudioQualityMin = 0,
+ AVAudioQualityLow = 0x20,
+ AVAudioQualityMedium = 0x40,
+ AVAudioQualityHigh = 0x60,
+ AVAudioQualityMax = 0x7F
+ };
+
+ - (AVAudioRecorder *)recordToFile:(NSURL *)fileURL {
+ NSDictionary *settings = @{ AVEncoderAudioQualityKey : @(AVAudioQualityMax) };
+ return [[AVAudioRecorder alloc] initWithURL:fileURL settings:settings error:NULL];
+ }
+
+The expression ``@(AVAudioQualityMax)`` converts ``AVAudioQualityMax``
+to an integer type, and boxes the value accordingly. If the enum has a
+:ref:`fixed underlying type <objc-fixed-enum>` as in:
+
+.. code-block:: objc
+
+ typedef enum : unsigned char { Red, Green, Blue } Color;
+ NSNumber *red = @(Red), *green = @(Green), *blue = @(Blue); // => [NSNumber numberWithUnsignedChar:]
+
+then the fixed underlying type will be used to select the correct
+``NSNumber`` creation method.
+
+Boxing a value of enum type will result in a ``NSNumber`` pointer with a
+creation method according to the underlying type of the enum, which can
+be a :ref:`fixed underlying type <objc-fixed-enum>`
+or a compiler-defined integer type capable of representing the values of
+all the members of the enumeration:
+
+.. code-block:: objc
+
+ typedef enum : unsigned char { Red, Green, Blue } Color;
+ Color col = Red;
+ NSNumber *nsCol = @(col); // => [NSNumber numberWithUnsignedChar:]
+
+Boxed C Strings
+---------------
+
+A C string literal prefixed by the ``'@'`` token denotes an ``NSString``
+literal in the same way a numeric literal prefixed by the ``'@'`` token
+denotes an ``NSNumber`` literal. When the type of the parenthesized
+expression is ``(char *)`` or ``(const char *)``, the result of the
+boxed expression is a pointer to an ``NSString`` object containing
+equivalent character data, which is assumed to be '\\0'-terminated and
+UTF-8 encoded. The following example converts C-style command line
+arguments into ``NSString`` objects.
+
+.. code-block:: objc
+
+ // Partition command line arguments into positional and option arguments.
+ NSMutableArray *args = [NSMutableArray new];
+ NSMutableDictionary *options = [NSMutableDictionary new];
+ while (--argc) {
+ const char *arg = *++argv;
+ if (strncmp(arg, "--", 2) == 0) {
+ options[@(arg + 2)] = @(*++argv); // --key value
+ } else {
+ [args addObject:@(arg)]; // positional argument
+ }
+ }
+
+As with all C pointers, character pointer expressions can involve
+arbitrary pointer arithmetic, therefore programmers must ensure that the
+character data is valid. Passing ``NULL`` as the character pointer will
+raise an exception at runtime. When possible, the compiler will reject
+``NULL`` character pointers used in boxed expressions.
+
+Boxed C Structures
+------------------
+
+Boxed expressions support construction of NSValue objects.
+It said that C structures can be used, the only requirement is:
+structure should be marked with ``objc_boxable`` attribute.
+To support older version of frameworks and/or third-party libraries
+you may need to add the attribute via ``typedef``.
+
+.. code-block:: objc
+
+ struct __attribute__((objc_boxable)) Point {
+ // ...
+ };
+
+ typedef struct __attribute__((objc_boxable)) _Size {
+ // ...
+ } Size;
+
+ typedef struct _Rect {
+ // ...
+ } Rect;
+
+ struct Point p;
+ NSValue *point = @(p); // ok
+ Size s;
+ NSValue *size = @(s); // ok
+
+ Rect r;
+ NSValue *bad_rect = @(r); // error
+
+ typedef struct __attribute__((objc_boxable)) _Rect Rect;
+
+ NSValue *good_rect = @(r); // ok
+
+
+Container Literals
+==================
+
+Objective-C now supports a new expression syntax for creating immutable
+array and dictionary container objects.
+
+Examples
+--------
+
+Immutable array expression:
+
+.. code-block:: objc
+
+ NSArray *array = @[ @"Hello", NSApp, [NSNumber numberWithInt:42] ];
+
+This creates an ``NSArray`` with 3 elements. The comma-separated
+sub-expressions of an array literal can be any Objective-C object
+pointer typed expression.
+
+Immutable dictionary expression:
+
+.. code-block:: objc
+
+ NSDictionary *dictionary = @{
+ @"name" : NSUserName(),
+ @"date" : [NSDate date],
+ @"processInfo" : [NSProcessInfo processInfo]
+ };
+
+This creates an ``NSDictionary`` with 3 key/value pairs. Value
+sub-expressions of a dictionary literal must be Objective-C object
+pointer typed, as in array literals. Key sub-expressions must be of an
+Objective-C object pointer type that implements the
+``<NSCopying>`` protocol.
+
+Discussion
+----------
+
+Neither keys nor values can have the value ``nil`` in containers. If the
+compiler can prove that a key or value is ``nil`` at compile time, then
+a warning will be emitted. Otherwise, a runtime error will occur.
+
+Using array and dictionary literals is safer than the variadic creation
+forms commonly in use today. Array literal expressions expand to calls
+to ``+[NSArray arrayWithObjects:count:]``, which validates that all
+objects are non-``nil``. The variadic form,
+``+[NSArray arrayWithObjects:]`` uses ``nil`` as an argument list
+terminator, which can lead to malformed array objects. Dictionary
+literals are similarly created with
+``+[NSDictionary dictionaryWithObjects:forKeys:count:]`` which validates
+all objects and keys, unlike
+``+[NSDictionary dictionaryWithObjectsAndKeys:]`` which also uses a
+``nil`` parameter as an argument list terminator.
+
+Object Subscripting
+===================
+
+Objective-C object pointer values can now be used with C's subscripting
+operator.
+
+Examples
+--------
+
+The following code demonstrates the use of object subscripting syntax
+with ``NSMutableArray`` and ``NSMutableDictionary`` objects:
+
+.. code-block:: objc
+
+ NSMutableArray *array = ...;
+ NSUInteger idx = ...;
+ id newObject = ...;
+ id oldObject = array[idx];
+ array[idx] = newObject; // replace oldObject with newObject
+
+ NSMutableDictionary *dictionary = ...;
+ NSString *key = ...;
+ oldObject = dictionary[key];
+ dictionary[key] = newObject; // replace oldObject with newObject
+
+The next section explains how subscripting expressions map to accessor
+methods.
+
+Subscripting Methods
+--------------------
+
+Objective-C supports two kinds of subscript expressions: *array-style*
+subscript expressions use integer typed subscripts; *dictionary-style*
+subscript expressions use Objective-C object pointer typed subscripts.
+Each type of subscript expression is mapped to a message send using a
+predefined selector. The advantage of this design is flexibility: class
+designers are free to introduce subscripting by declaring methods or by
+adopting protocols. Moreover, because the method names are selected by
+the type of the subscript, an object can be subscripted using both array
+and dictionary styles.
+
+Array-Style Subscripting
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+When the subscript operand has an integral type, the expression is
+rewritten to use one of two different selectors, depending on whether
+the element is being read or written. When an expression reads an
+element using an integral index, as in the following example:
+
+.. code-block:: objc
+
+ NSUInteger idx = ...;
+ id value = object[idx];
+
+it is translated into a call to ``objectAtIndexedSubscript:``
+
+.. code-block:: objc
+
+ id value = [object objectAtIndexedSubscript:idx];
+
+When an expression writes an element using an integral index:
+
+.. code-block:: objc
+
+ object[idx] = newValue;
+
+it is translated to a call to ``setObject:atIndexedSubscript:``
+
+.. code-block:: objc
+
+ [object setObject:newValue atIndexedSubscript:idx];
+
+These message sends are then type-checked and performed just like
+explicit message sends. The method used for objectAtIndexedSubscript:
+must be declared with an argument of integral type and a return value of
+some Objective-C object pointer type. The method used for
+setObject:atIndexedSubscript: must be declared with its first argument
+having some Objective-C pointer type and its second argument having
+integral type.
+
+The meaning of indexes is left up to the declaring class. The compiler
+will coerce the index to the appropriate argument type of the method it
+uses for type-checking. For an instance of ``NSArray``, reading an
+element using an index outside the range ``[0, array.count)`` will raise
+an exception. For an instance of ``NSMutableArray``, assigning to an
+element using an index within this range will replace that element, but
+assigning to an element using an index outside this range will raise an
+exception; no syntax is provided for inserting, appending, or removing
+elements for mutable arrays.
+
+A class need not declare both methods in order to take advantage of this
+language feature. For example, the class ``NSArray`` declares only
+``objectAtIndexedSubscript:``, so that assignments to elements will fail
+to type-check; moreover, its subclass ``NSMutableArray`` declares
+``setObject:atIndexedSubscript:``.
+
+Dictionary-Style Subscripting
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+When the subscript operand has an Objective-C object pointer type, the
+expression is rewritten to use one of two different selectors, depending
+on whether the element is being read from or written to. When an
+expression reads an element using an Objective-C object pointer
+subscript operand, as in the following example:
+
+.. code-block:: objc
+
+ id key = ...;
+ id value = object[key];
+
+it is translated into a call to the ``objectForKeyedSubscript:`` method:
+
+.. code-block:: objc
+
+ id value = [object objectForKeyedSubscript:key];
+
+When an expression writes an element using an Objective-C object pointer
+subscript:
+
+.. code-block:: objc
+
+ object[key] = newValue;
+
+it is translated to a call to ``setObject:forKeyedSubscript:``
+
+.. code-block:: objc
+
+ [object setObject:newValue forKeyedSubscript:key];
+
+The behavior of ``setObject:forKeyedSubscript:`` is class-specific; but
+in general it should replace an existing value if one is already
+associated with a key, otherwise it should add a new value for the key.
+No syntax is provided for removing elements from mutable dictionaries.
+
+Discussion
+----------
+
+An Objective-C subscript expression occurs when the base operand of the
+C subscript operator has an Objective-C object pointer type. Since this
+potentially collides with pointer arithmetic on the value, these
+expressions are only supported under the modern Objective-C runtime,
+which categorically forbids such arithmetic.
+
+Currently, only subscripts of integral or Objective-C object pointer
+type are supported. In C++, a class type can be used if it has a single
+conversion function to an integral or Objective-C pointer type, in which
+case that conversion is applied and analysis continues as appropriate.
+Otherwise, the expression is ill-formed.
+
+An Objective-C object subscript expression is always an l-value. If the
+expression appears on the left-hand side of a simple assignment operator
+(=), the element is written as described below. If the expression
+appears on the left-hand side of a compound assignment operator (e.g.
++=), the program is ill-formed, because the result of reading an element
+is always an Objective-C object pointer and no binary operators are
+legal on such pointers. If the expression appears in any other position,
+the element is read as described below. It is an error to take the
+address of a subscript expression, or (in C++) to bind a reference to
+it.
+
+Programs can use object subscripting with Objective-C object pointers of
+type ``id``. Normal dynamic message send rules apply; the compiler must
+see *some* declaration of the subscripting methods, and will pick the
+declaration seen first.
+
+Caveats
+=======
+
+Objects created using the literal or boxed expression syntax are not
+guaranteed to be uniqued by the runtime, but nor are they guaranteed to
+be newly-allocated. As such, the result of performing direct comparisons
+against the location of an object literal (using ``==``, ``!=``, ``<``,
+``<=``, ``>``, or ``>=``) is not well-defined. This is usually a simple
+mistake in code that intended to call the ``isEqual:`` method (or the
+``compare:`` method).
+
+This caveat applies to compile-time string literals as well.
+Historically, string literals (using the ``@"..."`` syntax) have been
+uniqued across translation units during linking. This is an
+implementation detail of the compiler and should not be relied upon. If
+you are using such code, please use global string constants instead
+(``NSString * const MyConst = @"..."``) or use ``isEqual:``.
+
+Grammar Additions
+=================
+
+To support the new syntax described above, the Objective-C
+``@``-expression grammar has the following new productions:
+
+::
+
+ objc-at-expression : '@' (string-literal | encode-literal | selector-literal | protocol-literal | object-literal)
+ ;
+
+ object-literal : ('+' | '-')? numeric-constant
+ | character-constant
+ | boolean-constant
+ | array-literal
+ | dictionary-literal
+ ;
+
+ boolean-constant : '__objc_yes' | '__objc_no' | 'true' | 'false' /* boolean keywords. */
+ ;
+
+ array-literal : '[' assignment-expression-list ']'
+ ;
+
+ assignment-expression-list : assignment-expression (',' assignment-expression-list)?
+ | /* empty */
+ ;
+
+ dictionary-literal : '{' key-value-list '}'
+ ;
+
+ key-value-list : key-value-pair (',' key-value-list)?
+ | /* empty */
+ ;
+
+ key-value-pair : assignment-expression ':' assignment-expression
+ ;
+
+Note: ``@true`` and ``@false`` are only supported in Objective-C++.
+
+Availability Checks
+===================
+
+Programs test for the new features by using clang's \_\_has\_feature
+checks. Here are examples of their use:
+
+.. code-block:: objc
+
+ #if __has_feature(objc_array_literals)
+ // new way.
+ NSArray *elements = @[ @"H", @"He", @"O", @"C" ];
+ #else
+ // old way (equivalent).
+ id objects[] = { @"H", @"He", @"O", @"C" };
+ NSArray *elements = [NSArray arrayWithObjects:objects count:4];
+ #endif
+
+ #if __has_feature(objc_dictionary_literals)
+ // new way.
+ NSDictionary *masses = @{ @"H" : @1.0078, @"He" : @4.0026, @"O" : @15.9990, @"C" : @12.0096 };
+ #else
+ // old way (equivalent).
+ id keys[] = { @"H", @"He", @"O", @"C" };
+ id values[] = { [NSNumber numberWithDouble:1.0078], [NSNumber numberWithDouble:4.0026],
+ [NSNumber numberWithDouble:15.9990], [NSNumber numberWithDouble:12.0096] };
+ NSDictionary *masses = [NSDictionary dictionaryWithObjects:objects forKeys:keys count:4];
+ #endif
+
+ #if __has_feature(objc_subscripting)
+ NSUInteger i, count = elements.count;
+ for (i = 0; i < count; ++i) {
+ NSString *element = elements[i];
+ NSNumber *mass = masses[element];
+ NSLog(@"the mass of %@ is %@", element, mass);
+ }
+ #else
+ NSUInteger i, count = [elements count];
+ for (i = 0; i < count; ++i) {
+ NSString *element = [elements objectAtIndex:i];
+ NSNumber *mass = [masses objectForKey:element];
+ NSLog(@"the mass of %@ is %@", element, mass);
+ }
+ #endif
+
+ #if __has_attribute(objc_boxable)
+ typedef struct __attribute__((objc_boxable)) _Rect Rect;
+ #endif
+
+ #if __has_feature(objc_boxed_nsvalue_expressions)
+ CABasicAnimation animation = [CABasicAnimation animationWithKeyPath:@"position"];
+ animation.fromValue = @(layer.position);
+ animation.toValue = @(newPosition);
+ [layer addAnimation:animation forKey:@"move"];
+ #else
+ CABasicAnimation animation = [CABasicAnimation animationWithKeyPath:@"position"];
+ animation.fromValue = [NSValue valueWithCGPoint:layer.position];
+ animation.toValue = [NSValue valueWithCGPoint:newPosition];
+ [layer addAnimation:animation forKey:@"move"];
+ #endif
+
+Code can use also ``__has_feature(objc_bool)`` to check for the
+availability of numeric literals support. This checks for the new
+``__objc_yes / __objc_no`` keywords, which enable the use of
+``@YES / @NO`` literals.
+
+To check whether boxed expressions are supported, use
+``__has_feature(objc_boxed_expressions)`` feature macro.
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/PCHInternals.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/PCHInternals.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/PCHInternals.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/PCHInternals.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,571 @@
+========================================
+Precompiled Header and Modules Internals
+========================================
+
+.. contents::
+ :local:
+
+This document describes the design and implementation of Clang's precompiled
+headers (PCH) and modules. If you are interested in the end-user view, please
+see the :ref:`User's Manual <usersmanual-precompiled-headers>`.
+
+Using Precompiled Headers with ``clang``
+----------------------------------------
+
+The Clang compiler frontend, ``clang -cc1``, supports two command line options
+for generating and using PCH files.
+
+To generate PCH files using ``clang -cc1``, use the option `-emit-pch`:
+
+.. code-block:: bash
+
+ $ clang -cc1 test.h -emit-pch -o test.h.pch
+
+This option is transparently used by ``clang`` when generating PCH files. The
+resulting PCH file contains the serialized form of the compiler's internal
+representation after it has completed parsing and semantic analysis. The PCH
+file can then be used as a prefix header with the `-include-pch`
+option:
+
+.. code-block:: bash
+
+ $ clang -cc1 -include-pch test.h.pch test.c -o test.s
+
+Design Philosophy
+-----------------
+
+Precompiled headers are meant to improve overall compile times for projects, so
+the design of precompiled headers is entirely driven by performance concerns.
+The use case for precompiled headers is relatively simple: when there is a
+common set of headers that is included in nearly every source file in the
+project, we *precompile* that bundle of headers into a single precompiled
+header (PCH file). Then, when compiling the source files in the project, we
+load the PCH file first (as a prefix header), which acts as a stand-in for that
+bundle of headers.
+
+A precompiled header implementation improves performance when:
+
+* Loading the PCH file is significantly faster than re-parsing the bundle of
+ headers stored within the PCH file. Thus, a precompiled header design
+ attempts to minimize the cost of reading the PCH file. Ideally, this cost
+ should not vary with the size of the precompiled header file.
+
+* The cost of generating the PCH file initially is not so large that it
+ counters the per-source-file performance improvement due to eliminating the
+ need to parse the bundled headers in the first place. This is particularly
+ important on multi-core systems, because PCH file generation serializes the
+ build when all compilations require the PCH file to be up-to-date.
+
+Modules, as implemented in Clang, use the same mechanisms as precompiled
+headers to save a serialized AST file (one per module) and use those AST
+modules. From an implementation standpoint, modules are a generalization of
+precompiled headers, lifting a number of restrictions placed on precompiled
+headers. In particular, there can only be one precompiled header and it must
+be included at the beginning of the translation unit. The extensions to the
+AST file format required for modules are discussed in the section on
+:ref:`modules <pchinternals-modules>`.
+
+Clang's AST files are designed with a compact on-disk representation, which
+minimizes both creation time and the time required to initially load the AST
+file. The AST file itself contains a serialized representation of Clang's
+abstract syntax trees and supporting data structures, stored using the same
+compressed bitstream as `LLVM's bitcode file format
+<http://llvm.org/docs/BitCodeFormat.html>`_.
+
+Clang's AST files are loaded "lazily" from disk. When an AST file is initially
+loaded, Clang reads only a small amount of data from the AST file to establish
+where certain important data structures are stored. The amount of data read in
+this initial load is independent of the size of the AST file, such that a
+larger AST file does not lead to longer AST load times. The actual header data
+in the AST file --- macros, functions, variables, types, etc. --- is loaded
+only when it is referenced from the user's code, at which point only that
+entity (and those entities it depends on) are deserialized from the AST file.
+With this approach, the cost of using an AST file for a translation unit is
+proportional to the amount of code actually used from the AST file, rather than
+being proportional to the size of the AST file itself.
+
+When given the `-print-stats` option, Clang produces statistics
+describing how much of the AST file was actually loaded from disk. For a
+simple "Hello, World!" program that includes the Apple ``Cocoa.h`` header
+(which is built as a precompiled header), this option illustrates how little of
+the actual precompiled header is required:
+
+.. code-block:: none
+
+ *** AST File Statistics:
+ 895/39981 source location entries read (2.238563%)
+ 19/15315 types read (0.124061%)
+ 20/82685 declarations read (0.024188%)
+ 154/58070 identifiers read (0.265197%)
+ 0/7260 selectors read (0.000000%)
+ 0/30842 statements read (0.000000%)
+ 4/8400 macros read (0.047619%)
+ 1/4995 lexical declcontexts read (0.020020%)
+ 0/4413 visible declcontexts read (0.000000%)
+ 0/7230 method pool entries read (0.000000%)
+ 0 method pool misses
+
+For this small program, only a tiny fraction of the source locations, types,
+declarations, identifiers, and macros were actually deserialized from the
+precompiled header. These statistics can be useful to determine whether the
+AST file implementation can be improved by making more of the implementation
+lazy.
+
+Precompiled headers can be chained. When you create a PCH while including an
+existing PCH, Clang can create the new PCH by referencing the original file and
+only writing the new data to the new file. For example, you could create a PCH
+out of all the headers that are very commonly used throughout your project, and
+then create a PCH for every single source file in the project that includes the
+code that is specific to that file, so that recompiling the file itself is very
+fast, without duplicating the data from the common headers for every file. The
+mechanisms behind chained precompiled headers are discussed in a :ref:`later
+section <pchinternals-chained>`.
+
+AST File Contents
+-----------------
+
+An AST file produced by clang is an object file container with a ``clangast``
+(COFF) or ``__clangast`` (ELF and Mach-O) section containing the serialized AST.
+Other target-specific sections in the object file container are used to hold
+debug information for the data types defined in the AST. Tools built on top of
+libclang that do not need debug information may also produce raw AST files that
+only contain the serialized AST.
+
+The ``clangast`` section is organized into several different blocks, each of
+which contains the serialized representation of a part of Clang's internal
+representation. Each of the blocks corresponds to either a block or a record
+within `LLVM's bitstream format <http://llvm.org/docs/BitCodeFormat.html>`_.
+The contents of each of these logical blocks are described below.
+
+.. image:: PCHLayout.png
+
+The ``llvm-objdump`` utility provides a ``-raw-clang-ast`` option to extract the
+binary contents of the AST section from an object file container.
+
+The `llvm-bcanalyzer <http://llvm.org/docs/CommandGuide/llvm-bcanalyzer.html>`_
+utility can be used to examine the actual structure of the bitstream for the AST
+section. This information can be used both to help understand the structure of
+the AST section and to isolate areas where the AST representation can still be
+optimized, e.g., through the introduction of abbreviations.
+
+
+Metadata Block
+^^^^^^^^^^^^^^
+
+The metadata block contains several records that provide information about how
+the AST file was built. This metadata is primarily used to validate the use of
+an AST file. For example, a precompiled header built for a 32-bit x86 target
+cannot be used when compiling for a 64-bit x86 target. The metadata block
+contains information about:
+
+Language options
+ Describes the particular language dialect used to compile the AST file,
+ including major options (e.g., Objective-C support) and more minor options
+ (e.g., support for "``//``" comments). The contents of this record correspond to
+ the ``LangOptions`` class.
+
+Target architecture
+ The target triple that describes the architecture, platform, and ABI for
+ which the AST file was generated, e.g., ``i386-apple-darwin9``.
+
+AST version
+ The major and minor version numbers of the AST file format. Changes in the
+ minor version number should not affect backward compatibility, while changes
+ in the major version number imply that a newer compiler cannot read an older
+ precompiled header (and vice-versa).
+
+Original file name
+ The full path of the header that was used to generate the AST file.
+
+Predefines buffer
+ Although not explicitly stored as part of the metadata, the predefines buffer
+ is used in the validation of the AST file. The predefines buffer itself
+ contains code generated by the compiler to initialize the preprocessor state
+ according to the current target, platform, and command-line options. For
+ example, the predefines buffer will contain "``#define __STDC__ 1``" when we
+ are compiling C without Microsoft extensions. The predefines buffer itself
+ is stored within the :ref:`pchinternals-sourcemgr`, but its contents are
+ verified along with the rest of the metadata.
+
+A chained PCH file (that is, one that references another PCH) and a module
+(which may import other modules) have additional metadata containing the list
+of all AST files that this AST file depends on. Each of those files will be
+loaded along with this AST file.
+
+For chained precompiled headers, the language options, target architecture and
+predefines buffer data is taken from the end of the chain, since they have to
+match anyway.
+
+.. _pchinternals-sourcemgr:
+
+Source Manager Block
+^^^^^^^^^^^^^^^^^^^^
+
+The source manager block contains the serialized representation of Clang's
+:ref:`SourceManager <SourceManager>` class, which handles the mapping from
+source locations (as represented in Clang's abstract syntax tree) into actual
+column/line positions within a source file or macro instantiation. The AST
+file's representation of the source manager also includes information about all
+of the headers that were (transitively) included when building the AST file.
+
+The bulk of the source manager block is dedicated to information about the
+various files, buffers, and macro instantiations into which a source location
+can refer. Each of these is referenced by a numeric "file ID", which is a
+unique number (allocated starting at 1) stored in the source location. Clang
+serializes the information for each kind of file ID, along with an index that
+maps file IDs to the position within the AST file where the information about
+that file ID is stored. The data associated with a file ID is loaded only when
+required by the front end, e.g., to emit a diagnostic that includes a macro
+instantiation history inside the header itself.
+
+The source manager block also contains information about all of the headers
+that were included when building the AST file. This includes information about
+the controlling macro for the header (e.g., when the preprocessor identified
+that the contents of the header dependent on a macro like
+``LLVM_CLANG_SOURCEMANAGER_H``).
+
+.. _pchinternals-preprocessor:
+
+Preprocessor Block
+^^^^^^^^^^^^^^^^^^
+
+The preprocessor block contains the serialized representation of the
+preprocessor. Specifically, it contains all of the macros that have been
+defined by the end of the header used to build the AST file, along with the
+token sequences that comprise each macro. The macro definitions are only read
+from the AST file when the name of the macro first occurs in the program. This
+lazy loading of macro definitions is triggered by lookups into the
+:ref:`identifier table <pchinternals-ident-table>`.
+
+.. _pchinternals-types:
+
+Types Block
+^^^^^^^^^^^
+
+The types block contains the serialized representation of all of the types
+referenced in the translation unit. Each Clang type node (``PointerType``,
+``FunctionProtoType``, etc.) has a corresponding record type in the AST file.
+When types are deserialized from the AST file, the data within the record is
+used to reconstruct the appropriate type node using the AST context.
+
+Each type has a unique type ID, which is an integer that uniquely identifies
+that type. Type ID 0 represents the NULL type, type IDs less than
+``NUM_PREDEF_TYPE_IDS`` represent predefined types (``void``, ``float``, etc.),
+while other "user-defined" type IDs are assigned consecutively from
+``NUM_PREDEF_TYPE_IDS`` upward as the types are encountered. The AST file has
+an associated mapping from the user-defined types block to the location within
+the types block where the serialized representation of that type resides,
+enabling lazy deserialization of types. When a type is referenced from within
+the AST file, that reference is encoded using the type ID shifted left by 3
+bits. The lower three bits are used to represent the ``const``, ``volatile``,
+and ``restrict`` qualifiers, as in Clang's :ref:`QualType <QualType>` class.
+
+.. _pchinternals-decls:
+
+Declarations Block
+^^^^^^^^^^^^^^^^^^
+
+The declarations block contains the serialized representation of all of the
+declarations referenced in the translation unit. Each Clang declaration node
+(``VarDecl``, ``FunctionDecl``, etc.) has a corresponding record type in the
+AST file. When declarations are deserialized from the AST file, the data
+within the record is used to build and populate a new instance of the
+corresponding ``Decl`` node. As with types, each declaration node has a
+numeric ID that is used to refer to that declaration within the AST file. In
+addition, a lookup table provides a mapping from that numeric ID to the offset
+within the precompiled header where that declaration is described.
+
+Declarations in Clang's abstract syntax trees are stored hierarchically. At
+the top of the hierarchy is the translation unit (``TranslationUnitDecl``),
+which contains all of the declarations in the translation unit but is not
+actually written as a specific declaration node. Its child declarations (such
+as functions or struct types) may also contain other declarations inside them,
+and so on. Within Clang, each declaration is stored within a :ref:`declaration
+context <DeclContext>`, as represented by the ``DeclContext`` class.
+Declaration contexts provide the mechanism to perform name lookup within a
+given declaration (e.g., find the member named ``x`` in a structure) and
+iterate over the declarations stored within a context (e.g., iterate over all
+of the fields of a structure for structure layout).
+
+In Clang's AST file format, deserializing a declaration that is a
+``DeclContext`` is a separate operation from deserializing all of the
+declarations stored within that declaration context. Therefore, Clang will
+deserialize the translation unit declaration without deserializing the
+declarations within that translation unit. When required, the declarations
+stored within a declaration context will be deserialized. There are two
+representations of the declarations within a declaration context, which
+correspond to the name-lookup and iteration behavior described above:
+
+* When the front end performs name lookup to find a name ``x`` within a given
+ declaration context (for example, during semantic analysis of the expression
+ ``p->x``, where ``p``'s type is defined in the precompiled header), Clang
+ refers to an on-disk hash table that maps from the names within that
+ declaration context to the declaration IDs that represent each visible
+ declaration with that name. The actual declarations will then be
+ deserialized to provide the results of name lookup.
+* When the front end performs iteration over all of the declarations within a
+ declaration context, all of those declarations are immediately
+ de-serialized. For large declaration contexts (e.g., the translation unit),
+ this operation is expensive; however, large declaration contexts are not
+ traversed in normal compilation, since such a traversal is unnecessary.
+ However, it is common for the code generator and semantic analysis to
+ traverse declaration contexts for structs, classes, unions, and
+ enumerations, although those contexts contain relatively few declarations in
+ the common case.
+
+Statements and Expressions
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Statements and expressions are stored in the AST file in both the :ref:`types
+<pchinternals-types>` and the :ref:`declarations <pchinternals-decls>` blocks,
+because every statement or expression will be associated with either a type or
+declaration. The actual statement and expression records are stored
+immediately following the declaration or type that owns the statement or
+expression. For example, the statement representing the body of a function
+will be stored directly following the declaration of the function.
+
+As with types and declarations, each statement and expression kind in Clang's
+abstract syntax tree (``ForStmt``, ``CallExpr``, etc.) has a corresponding
+record type in the AST file, which contains the serialized representation of
+that statement or expression. Each substatement or subexpression within an
+expression is stored as a separate record (which keeps most records to a fixed
+size). Within the AST file, the subexpressions of an expression are stored, in
+reverse order, prior to the expression that owns those expression, using a form
+of `Reverse Polish Notation
+<http://en.wikipedia.org/wiki/Reverse_Polish_notation>`_. For example, an
+expression ``3 - 4 + 5`` would be represented as follows:
+
++-----------------------+
+| ``IntegerLiteral(5)`` |
++-----------------------+
+| ``IntegerLiteral(4)`` |
++-----------------------+
+| ``IntegerLiteral(3)`` |
++-----------------------+
+| ``IntegerLiteral(-)`` |
++-----------------------+
+| ``IntegerLiteral(+)`` |
++-----------------------+
+| ``STOP`` |
++-----------------------+
+
+When reading this representation, Clang evaluates each expression record it
+encounters, builds the appropriate abstract syntax tree node, and then pushes
+that expression on to a stack. When a record contains *N* subexpressions ---
+``BinaryOperator`` has two of them --- those expressions are popped from the
+top of the stack. The special STOP code indicates that we have reached the end
+of a serialized expression or statement; other expression or statement records
+may follow, but they are part of a different expression.
+
+.. _pchinternals-ident-table:
+
+Identifier Table Block
+^^^^^^^^^^^^^^^^^^^^^^
+
+The identifier table block contains an on-disk hash table that maps each
+identifier mentioned within the AST file to the serialized representation of
+the identifier's information (e.g, the ``IdentifierInfo`` structure). The
+serialized representation contains:
+
+* The actual identifier string.
+* Flags that describe whether this identifier is the name of a built-in, a
+ poisoned identifier, an extension token, or a macro.
+* If the identifier names a macro, the offset of the macro definition within
+ the :ref:`pchinternals-preprocessor`.
+* If the identifier names one or more declarations visible from translation
+ unit scope, the :ref:`declaration IDs <pchinternals-decls>` of these
+ declarations.
+
+When an AST file is loaded, the AST file reader mechanism introduces itself
+into the identifier table as an external lookup source. Thus, when the user
+program refers to an identifier that has not yet been seen, Clang will perform
+a lookup into the identifier table. If an identifier is found, its contents
+(macro definitions, flags, top-level declarations, etc.) will be deserialized,
+at which point the corresponding ``IdentifierInfo`` structure will have the
+same contents it would have after parsing the headers in the AST file.
+
+Within the AST file, the identifiers used to name declarations are represented
+with an integral value. A separate table provides a mapping from this integral
+value (the identifier ID) to the location within the on-disk hash table where
+that identifier is stored. This mapping is used when deserializing the name of
+a declaration, the identifier of a token, or any other construct in the AST
+file that refers to a name.
+
+.. _pchinternals-method-pool:
+
+Method Pool Block
+^^^^^^^^^^^^^^^^^
+
+The method pool block is represented as an on-disk hash table that serves two
+purposes: it provides a mapping from the names of Objective-C selectors to the
+set of Objective-C instance and class methods that have that particular
+selector (which is required for semantic analysis in Objective-C) and also
+stores all of the selectors used by entities within the AST file. The design
+of the method pool is similar to that of the :ref:`identifier table
+<pchinternals-ident-table>`: the first time a particular selector is formed
+during the compilation of the program, Clang will search in the on-disk hash
+table of selectors; if found, Clang will read the Objective-C methods
+associated with that selector into the appropriate front-end data structure
+(``Sema::InstanceMethodPool`` and ``Sema::FactoryMethodPool`` for instance and
+class methods, respectively).
+
+As with identifiers, selectors are represented by numeric values within the AST
+file. A separate index maps these numeric selector values to the offset of the
+selector within the on-disk hash table, and will be used when de-serializing an
+Objective-C method declaration (or other Objective-C construct) that refers to
+the selector.
+
+AST Reader Integration Points
+-----------------------------
+
+The "lazy" deserialization behavior of AST files requires their integration
+into several completely different submodules of Clang. For example, lazily
+deserializing the declarations during name lookup requires that the name-lookup
+routines be able to query the AST file to find entities stored there.
+
+For each Clang data structure that requires direct interaction with the AST
+reader logic, there is an abstract class that provides the interface between
+the two modules. The ``ASTReader`` class, which handles the loading of an AST
+file, inherits from all of these abstract classes to provide lazy
+deserialization of Clang's data structures. ``ASTReader`` implements the
+following abstract classes:
+
+``ExternalSLocEntrySource``
+ This abstract interface is associated with the ``SourceManager`` class, and
+ is used whenever the :ref:`source manager <pchinternals-sourcemgr>` needs to
+ load the details of a file, buffer, or macro instantiation.
+
+``IdentifierInfoLookup``
+ This abstract interface is associated with the ``IdentifierTable`` class, and
+ is used whenever the program source refers to an identifier that has not yet
+ been seen. In this case, the AST reader searches for this identifier within
+ its :ref:`identifier table <pchinternals-ident-table>` to load any top-level
+ declarations or macros associated with that identifier.
+
+``ExternalASTSource``
+ This abstract interface is associated with the ``ASTContext`` class, and is
+ used whenever the abstract syntax tree nodes need to loaded from the AST
+ file. It provides the ability to de-serialize declarations and types
+ identified by their numeric values, read the bodies of functions when
+ required, and read the declarations stored within a declaration context
+ (either for iteration or for name lookup).
+
+``ExternalSemaSource``
+ This abstract interface is associated with the ``Sema`` class, and is used
+ whenever semantic analysis needs to read information from the :ref:`global
+ method pool <pchinternals-method-pool>`.
+
+.. _pchinternals-chained:
+
+Chained precompiled headers
+---------------------------
+
+Chained precompiled headers were initially intended to improve the performance
+of IDE-centric operations such as syntax highlighting and code completion while
+a particular source file is being edited by the user. To minimize the amount
+of reparsing required after a change to the file, a form of precompiled header
+--- called a precompiled *preamble* --- is automatically generated by parsing
+all of the headers in the source file, up to and including the last
+``#include``. When only the source file changes (and none of the headers it
+depends on), reparsing of that source file can use the precompiled preamble and
+start parsing after the ``#include``\ s, so parsing time is proportional to the
+size of the source file (rather than all of its includes). However, the
+compilation of that translation unit may already use a precompiled header: in
+this case, Clang will create the precompiled preamble as a chained precompiled
+header that refers to the original precompiled header. This drastically
+reduces the time needed to serialize the precompiled preamble for use in
+reparsing.
+
+Chained precompiled headers get their name because each precompiled header can
+depend on one other precompiled header, forming a chain of dependencies. A
+translation unit will then include the precompiled header that starts the chain
+(i.e., nothing depends on it). This linearity of dependencies is important for
+the semantic model of chained precompiled headers, because the most-recent
+precompiled header can provide information that overrides the information
+provided by the precompiled headers it depends on, just like a header file
+``B.h`` that includes another header ``A.h`` can modify the state produced by
+parsing ``A.h``, e.g., by ``#undef``'ing a macro defined in ``A.h``.
+
+There are several ways in which chained precompiled headers generalize the AST
+file model:
+
+Numbering of IDs
+ Many different kinds of entities --- identifiers, declarations, types, etc.
+ --- have ID numbers that start at 1 or some other predefined constant and
+ grow upward. Each precompiled header records the maximum ID number it has
+ assigned in each category. Then, when a new precompiled header is generated
+ that depends on (chains to) another precompiled header, it will start
+ counting at the next available ID number. This way, one can determine, given
+ an ID number, which AST file actually contains the entity.
+
+Name lookup
+ When writing a chained precompiled header, Clang attempts to write only
+ information that has changed from the precompiled header on which it is
+ based. This changes the lookup algorithm for the various tables, such as the
+ :ref:`identifier table <pchinternals-ident-table>`: the search starts at the
+ most-recent precompiled header. If no entry is found, lookup then proceeds
+ to the identifier table in the precompiled header it depends on, and so one.
+ Once a lookup succeeds, that result is considered definitive, overriding any
+ results from earlier precompiled headers.
+
+Update records
+ There are various ways in which a later precompiled header can modify the
+ entities described in an earlier precompiled header. For example, later
+ precompiled headers can add entries into the various name-lookup tables for
+ the translation unit or namespaces, or add new categories to an Objective-C
+ class. Each of these updates is captured in an "update record" that is
+ stored in the chained precompiled header file and will be loaded along with
+ the original entity.
+
+.. _pchinternals-modules:
+
+Modules
+-------
+
+Modules generalize the chained precompiled header model yet further, from a
+linear chain of precompiled headers to an arbitrary directed acyclic graph
+(DAG) of AST files. All of the same techniques used to make chained
+precompiled headers work --- ID number, name lookup, update records --- are
+shared with modules. However, the DAG nature of modules introduce a number of
+additional complications to the model:
+
+Numbering of IDs
+ The simple, linear numbering scheme used in chained precompiled headers falls
+ apart with the module DAG, because different modules may end up with
+ different numbering schemes for entities they imported from common shared
+ modules. To account for this, each module file provides information about
+ which modules it depends on and which ID numbers it assigned to the entities
+ in those modules, as well as which ID numbers it took for its own new
+ entities. The AST reader then maps these "local" ID numbers into a "global"
+ ID number space for the current translation unit, providing a 1-1 mapping
+ between entities (in whatever AST file they inhabit) and global ID numbers.
+ If that translation unit is then serialized into an AST file, this mapping
+ will be stored for use when the AST file is imported.
+
+Declaration merging
+ It is possible for a given entity (from the language's perspective) to be
+ declared multiple times in different places. For example, two different
+ headers can have the declaration of ``printf`` or could forward-declare
+ ``struct stat``. If each of those headers is included in a module, and some
+ third party imports both of those modules, there is a potentially serious
+ problem: name lookup for ``printf`` or ``struct stat`` will find both
+ declarations, but the AST nodes are unrelated. This would result in a
+ compilation error, due to an ambiguity in name lookup. Therefore, the AST
+ reader performs declaration merging according to the appropriate language
+ semantics, ensuring that the two disjoint declarations are merged into a
+ single redeclaration chain (with a common canonical declaration), so that it
+ is as if one of the headers had been included before the other.
+
+Name Visibility
+ Modules allow certain names that occur during module creation to be "hidden",
+ so that they are not part of the public interface of the module and are not
+ visible to its clients. The AST reader maintains a "visible" bit on various
+ AST nodes (declarations, macros, etc.) to indicate whether that particular
+ AST node is currently visible; the various name lookup mechanisms in Clang
+ inspect the visible bit to determine whether that entity, which is still in
+ the AST (because other, visible AST nodes may depend on it), can actually be
+ found by name lookup. When a new (sub)module is imported, it may make
+ existing, non-visible, already-deserialized AST nodes visible; it is the
+ responsibility of the AST reader to find and update these AST nodes when it
+ is notified of the import.
+
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/PTHInternals.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/PTHInternals.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/PTHInternals.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/PTHInternals.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,163 @@
+==========================
+Pretokenized Headers (PTH)
+==========================
+
+This document first describes the low-level interface for using PTH and
+then briefly elaborates on its design and implementation. If you are
+interested in the end-user view, please see the :ref:`User's Manual
+<usersmanual-precompiled-headers>`.
+
+Using Pretokenized Headers with ``clang`` (Low-level Interface)
+===============================================================
+
+The Clang compiler frontend, ``clang -cc1``, supports three command line
+options for generating and using PTH files.
+
+To generate PTH files using ``clang -cc1``, use the option ``-emit-pth``:
+
+.. code-block:: console
+
+ $ clang -cc1 test.h -emit-pth -o test.h.pth
+
+This option is transparently used by ``clang`` when generating PTH
+files. Similarly, PTH files can be used as prefix headers using the
+``-include-pth`` option:
+
+.. code-block:: console
+
+ $ clang -cc1 -include-pth test.h.pth test.c -o test.s
+
+Alternatively, Clang's PTH files can be used as a raw "token-cache" (or
+"content" cache) of the source included by the original header file.
+This means that the contents of the PTH file are searched as substitutes
+for *any* source files that are used by ``clang -cc1`` to process a
+source file. This is done by specifying the ``-token-cache`` option:
+
+.. code-block:: console
+
+ $ cat test.h
+ #include <stdio.h>
+ $ clang -cc1 -emit-pth test.h -o test.h.pth
+ $ cat test.c
+ #include "test.h"
+ $ clang -cc1 test.c -o test -token-cache test.h.pth
+
+In this example the contents of ``stdio.h`` (and the files it includes)
+will be retrieved from ``test.h.pth``, as the PTH file is being used in
+this case as a raw cache of the contents of ``test.h``. This is a
+low-level interface used to both implement the high-level PTH interface
+as well as to provide alternative means to use PTH-style caching.
+
+PTH Design and Implementation
+=============================
+
+Unlike GCC's precompiled headers, which cache the full ASTs and
+preprocessor state of a header file, Clang's pretokenized header files
+mainly cache the raw lexer *tokens* that are needed to segment the
+stream of characters in a source file into keywords, identifiers, and
+operators. Consequently, PTH serves to mainly directly speed up the
+lexing and preprocessing of a source file, while parsing and
+type-checking must be completely redone every time a PTH file is used.
+
+Basic Design Tradeoffs
+----------------------
+
+In the long term there are plans to provide an alternate PCH
+implementation for Clang that also caches the work for parsing and type
+checking the contents of header files. The current implementation of PCH
+in Clang as pretokenized header files was motivated by the following
+factors:
+
+**Language independence**
+ PTH files work with any language that
+ Clang's lexer can handle, including C, Objective-C, and (in the early
+ stages) C++. This means development on language features at the
+ parsing level or above (which is basically almost all interesting
+ pieces) does not require PTH to be modified.
+
+**Simple design**
+ Relatively speaking, PTH has a simple design and
+ implementation, making it easy to test. Further, because the
+ machinery for PTH resides at the lower-levels of the Clang library
+ stack it is fairly straightforward to profile and optimize.
+
+Further, compared to GCC's PCH implementation (which is the dominate
+precompiled header file implementation that Clang can be directly
+compared against) the PTH design in Clang yields several attractive
+features:
+
+**Architecture independence**
+ In contrast to GCC's PCH files (and
+ those of several other compilers), Clang's PTH files are architecture
+ independent, requiring only a single PTH file when building a
+ program for multiple architectures.
+
+ For example, on Mac OS X one may wish to compile a "universal binary"
+ that runs on PowerPC, 32-bit Intel (i386), and 64-bit Intel
+ architectures. In contrast, GCC requires a PCH file for each
+ architecture, as the definitions of types in the AST are
+ architecture-specific. Since a Clang PTH file essentially represents
+ a lexical cache of header files, a single PTH file can be safely used
+ when compiling for multiple architectures. This can also reduce
+ compile times because only a single PTH file needs to be generated
+ during a build instead of several.
+
+**Reduced memory pressure**
+ Similar to GCC, Clang reads PTH files
+ via the use of memory mapping (i.e., ``mmap``). Clang, however,
+ memory maps PTH files as read-only, meaning that multiple invocations
+ of ``clang -cc1`` can share the same pages in memory from a
+ memory-mapped PTH file. In comparison, GCC also memory maps its PCH
+ files but also modifies those pages in memory, incurring the
+ copy-on-write costs. The read-only nature of PTH can greatly reduce
+ memory pressure for builds involving multiple cores, thus improving
+ overall scalability.
+
+**Fast generation**
+ PTH files can be generated in a small fraction
+ of the time needed to generate GCC's PCH files. Since PTH/PCH
+ generation is a serial operation that typically blocks progress
+ during a build, faster generation time leads to improved processor
+ utilization with parallel builds on multicore machines.
+
+Despite these strengths, PTH's simple design suffers some algorithmic
+handicaps compared to other PCH strategies such as those used by GCC.
+While PTH can greatly speed up the processing time of a header file, the
+amount of work required to process a header file is still roughly linear
+in the size of the header file. In contrast, the amount of work done by
+GCC to process a precompiled header is (theoretically) constant (the
+ASTs for the header are literally memory mapped into the compiler). This
+means that only the pieces of the header file that are referenced by the
+source file including the header are the only ones the compiler needs to
+process during actual compilation. While GCC's particular implementation
+of PCH mitigates some of these algorithmic strengths via the use of
+copy-on-write pages, the approach itself can fundamentally dominate at
+an algorithmic level, especially when one considers header files of
+arbitrary size.
+
+There is also a PCH implementation for Clang based on the lazy
+deserialization of ASTs. This approach theoretically has the same
+constant-time algorithmic advantages just mentioned but also retains some
+of the strengths of PTH such as reduced memory pressure (ideal for
+multi-core builds).
+
+Internal PTH Optimizations
+--------------------------
+
+While the main optimization employed by PTH is to reduce lexing time of
+header files by caching pre-lexed tokens, PTH also employs several other
+optimizations to speed up the processing of header files:
+
+- ``stat`` caching: PTH files cache information obtained via calls to
+ ``stat`` that ``clang -cc1`` uses to resolve which files are included
+ by ``#include`` directives. This greatly reduces the overhead
+ involved in context-switching to the kernel to resolve included
+ files.
+
+- Fast skipping of ``#ifdef`` ... ``#endif`` chains: PTH files
+ record the basic structure of nested preprocessor blocks. When the
+ condition of the preprocessor block is false, all of its tokens are
+ immediately skipped instead of requiring them to be handled by
+ Clang's preprocessor.
+
+
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/RAVFrontendAction.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/RAVFrontendAction.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/RAVFrontendAction.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/RAVFrontendAction.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,219 @@
+==========================================================
+How to write RecursiveASTVisitor based ASTFrontendActions.
+==========================================================
+
+Introduction
+============
+
+In this tutorial you will learn how to create a FrontendAction that uses
+a RecursiveASTVisitor to find CXXRecordDecl AST nodes with a specified
+name.
+
+Creating a FrontendAction
+=========================
+
+When writing a clang based tool like a Clang Plugin or a standalone tool
+based on LibTooling, the common entry point is the FrontendAction.
+FrontendAction is an interface that allows execution of user specific
+actions as part of the compilation. To run tools over the AST clang
+provides the convenience interface ASTFrontendAction, which takes care
+of executing the action. The only part left is to implement the
+CreateASTConsumer method that returns an ASTConsumer per translation
+unit.
+
+::
+
+ class FindNamedClassAction : public clang::ASTFrontendAction {
+ public:
+ virtual std::unique_ptr<clang::ASTConsumer> CreateASTConsumer(
+ clang::CompilerInstance &Compiler, llvm::StringRef InFile) {
+ return std::unique_ptr<clang::ASTConsumer>(
+ new FindNamedClassConsumer);
+ }
+ };
+
+Creating an ASTConsumer
+=======================
+
+ASTConsumer is an interface used to write generic actions on an AST,
+regardless of how the AST was produced. ASTConsumer provides many
+different entry points, but for our use case the only one needed is
+HandleTranslationUnit, which is called with the ASTContext for the
+translation unit.
+
+::
+
+ class FindNamedClassConsumer : public clang::ASTConsumer {
+ public:
+ virtual void HandleTranslationUnit(clang::ASTContext &Context) {
+ // Traversing the translation unit decl via a RecursiveASTVisitor
+ // will visit all nodes in the AST.
+ Visitor.TraverseDecl(Context.getTranslationUnitDecl());
+ }
+ private:
+ // A RecursiveASTVisitor implementation.
+ FindNamedClassVisitor Visitor;
+ };
+
+Using the RecursiveASTVisitor
+=============================
+
+Now that everything is hooked up, the next step is to implement a
+RecursiveASTVisitor to extract the relevant information from the AST.
+
+The RecursiveASTVisitor provides hooks of the form bool
+VisitNodeType(NodeType \*) for most AST nodes; the exception are TypeLoc
+nodes, which are passed by-value. We only need to implement the methods
+for the relevant node types.
+
+Let's start by writing a RecursiveASTVisitor that visits all
+CXXRecordDecl's.
+
+::
+
+ class FindNamedClassVisitor
+ : public RecursiveASTVisitor<FindNamedClassVisitor> {
+ public:
+ bool VisitCXXRecordDecl(CXXRecordDecl *Declaration) {
+ // For debugging, dumping the AST nodes will show which nodes are already
+ // being visited.
+ Declaration->dump();
+
+ // The return value indicates whether we want the visitation to proceed.
+ // Return false to stop the traversal of the AST.
+ return true;
+ }
+ };
+
+In the methods of our RecursiveASTVisitor we can now use the full power
+of the Clang AST to drill through to the parts that are interesting for
+us. For example, to find all class declaration with a certain name, we
+can check for a specific qualified name:
+
+::
+
+ bool VisitCXXRecordDecl(CXXRecordDecl *Declaration) {
+ if (Declaration->getQualifiedNameAsString() == "n::m::C")
+ Declaration->dump();
+ return true;
+ }
+
+Accessing the SourceManager and ASTContext
+==========================================
+
+Some of the information about the AST, like source locations and global
+identifier information, are not stored in the AST nodes themselves, but
+in the ASTContext and its associated source manager. To retrieve them we
+need to hand the ASTContext into our RecursiveASTVisitor implementation.
+
+The ASTContext is available from the CompilerInstance during the call to
+CreateASTConsumer. We can thus extract it there and hand it into our
+freshly created FindNamedClassConsumer:
+
+::
+
+ virtual std::unique_ptr<clang::ASTConsumer> CreateASTConsumer(
+ clang::CompilerInstance &Compiler, llvm::StringRef InFile) {
+ return std::unique_ptr<clang::ASTConsumer>(
+ new FindNamedClassConsumer(&Compiler.getASTContext()));
+ }
+
+Now that the ASTContext is available in the RecursiveASTVisitor, we can
+do more interesting things with AST nodes, like looking up their source
+locations:
+
+::
+
+ bool VisitCXXRecordDecl(CXXRecordDecl *Declaration) {
+ if (Declaration->getQualifiedNameAsString() == "n::m::C") {
+ // getFullLoc uses the ASTContext's SourceManager to resolve the source
+ // location and break it up into its line and column parts.
+ FullSourceLoc FullLocation = Context->getFullLoc(Declaration->getLocStart());
+ if (FullLocation.isValid())
+ llvm::outs() << "Found declaration at "
+ << FullLocation.getSpellingLineNumber() << ":"
+ << FullLocation.getSpellingColumnNumber() << "\n";
+ }
+ return true;
+ }
+
+Putting it all together
+=======================
+
+Now we can combine all of the above into a small example program:
+
+::
+
+ #include "clang/AST/ASTConsumer.h"
+ #include "clang/AST/RecursiveASTVisitor.h"
+ #include "clang/Frontend/CompilerInstance.h"
+ #include "clang/Frontend/FrontendAction.h"
+ #include "clang/Tooling/Tooling.h"
+
+ using namespace clang;
+
+ class FindNamedClassVisitor
+ : public RecursiveASTVisitor<FindNamedClassVisitor> {
+ public:
+ explicit FindNamedClassVisitor(ASTContext *Context)
+ : Context(Context) {}
+
+ bool VisitCXXRecordDecl(CXXRecordDecl *Declaration) {
+ if (Declaration->getQualifiedNameAsString() == "n::m::C") {
+ FullSourceLoc FullLocation = Context->getFullLoc(Declaration->getLocStart());
+ if (FullLocation.isValid())
+ llvm::outs() << "Found declaration at "
+ << FullLocation.getSpellingLineNumber() << ":"
+ << FullLocation.getSpellingColumnNumber() << "\n";
+ }
+ return true;
+ }
+
+ private:
+ ASTContext *Context;
+ };
+
+ class FindNamedClassConsumer : public clang::ASTConsumer {
+ public:
+ explicit FindNamedClassConsumer(ASTContext *Context)
+ : Visitor(Context) {}
+
+ virtual void HandleTranslationUnit(clang::ASTContext &Context) {
+ Visitor.TraverseDecl(Context.getTranslationUnitDecl());
+ }
+ private:
+ FindNamedClassVisitor Visitor;
+ };
+
+ class FindNamedClassAction : public clang::ASTFrontendAction {
+ public:
+ virtual std::unique_ptr<clang::ASTConsumer> CreateASTConsumer(
+ clang::CompilerInstance &Compiler, llvm::StringRef InFile) {
+ return std::unique_ptr<clang::ASTConsumer>(
+ new FindNamedClassConsumer(&Compiler.getASTContext()));
+ }
+ };
+
+ int main(int argc, char **argv) {
+ if (argc > 1) {
+ clang::tooling::runToolOnCode(new FindNamedClassAction, argv[1]);
+ }
+ }
+
+We store this into a file called FindClassDecls.cpp and create the
+following CMakeLists.txt to link it:
+
+::
+
+ add_clang_executable(find-class-decls FindClassDecls.cpp)
+
+ target_link_libraries(find-class-decls clangTooling)
+
+When running this tool over a small code snippet it will output all
+declarations of a class n::m::C it found:
+
+::
+
+ $ ./bin/find-class-decls "namespace n { namespace m { class C {}; } }"
+ Found declaration at 1:29
+
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/ReleaseNotes.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/ReleaseNotes.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/ReleaseNotes.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/ReleaseNotes.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,270 @@
+=======================
+Clang 3.9 Release Notes
+=======================
+
+.. contents::
+ :local:
+ :depth: 2
+
+Written by the `LLVM Team <http://llvm.org/>`_
+
+Introduction
+============
+
+This document contains the release notes for the Clang C/C++/Objective-C
+frontend, part of the LLVM Compiler Infrastructure, release 3.9. Here we
+describe the status of Clang in some detail, including major
+improvements from the previous release and new feature work. For the
+general LLVM release notes, see `the LLVM
+documentation <http://llvm.org/docs/ReleaseNotes.html>`_. All LLVM
+releases may be downloaded from the `LLVM releases web
+site <http://llvm.org/releases/>`_.
+
+For more information about Clang or LLVM, including information about
+the latest release, please check out the main please see the `Clang Web
+Site <http://clang.llvm.org>`_ or the `LLVM Web
+Site <http://llvm.org>`_.
+
+What's New in Clang 3.9?
+========================
+
+Some of the major new features and improvements to Clang are listed
+here. Generic improvements to Clang as a whole or to its underlying
+infrastructure are described first, followed by language-specific
+sections with improvements to Clang's support for those languages.
+
+Major New Features
+------------------
+
+- Clang will no longer pass ``--build-id`` by default to the linker. In modern
+ linkers that is a relatively expensive option. It can be passed explicitly
+ with ``-Wl,--build-id``. To have clang always pass it, build clang with
+ ``-DENABLE_LINKER_BUILD_ID``.
+- On Itanium ABI targets, attribute abi_tag is now supported for compatibility
+ with GCC. Clang's implementation of abi_tag is mostly compatible with GCC ABI
+ version 10.
+
+Improvements to Clang's diagnostics
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Clang's diagnostics are constantly being improved to catch more issues,
+explain them more clearly, and provide more accurate source information
+about them. The improvements since the 3.8 release include:
+
+- ``-Wcomma`` is a new warning to show most uses of the builtin comma operator.
+
+- ``-Wfloat-conversion`` has two new sub-warnings to give finer grain control for
+ floating point to integer conversion warnings.
+
+ - ``-Wfloat-overflow-conversion`` detects when a constant floating point value
+ is converted to an integer type and will overflow the target type.
+
+ - ``-Wfloat-zero-conversion`` detects when a non-zero floating point value is
+ converted to a zero integer value.
+
+Attribute Changes in Clang
+--------------------------
+
+- The ``nodebug`` attribute may now be applied to static, global, and local
+ variables (but not parameters or non-static data members). This will suppress
+ all debugging information for the variable (and its type, if there are no
+ other uses of the type).
+
+
+Windows Support
+---------------
+
+TLS is enabled for Cygwin and defaults to -femulated-tls.
+
+Proper support, including correct mangling and overloading, added for
+MS-specific "__unaligned" type qualifier.
+
+clang-cl now has limited support for the precompiled header flags /Yc, /Yu, and
+/Fp. If the precompiled header is passed on the compile command with /FI, then
+the precompiled header flags are honored. But if the precompiled header is
+included by an ``#include <stdafx.h>`` in each source file instead of by a
+``/FIstdafx.h`` flag, these flag continue to be ignored.
+
+clang-cl has a new flag, ``/imsvc <dir>``, for adding a directory to the system
+include search path (where warnings are disabled by default) without having to
+set ``%INCLUDE%``.
+
+C Language Changes in Clang
+---------------------------
+The -faltivec and -maltivec flags no longer silently include altivec.h on Power platforms.
+
+`RenderScript
+<https://developer.android.com/guide/topics/renderscript/compute.html>`_
+support has been added to the frontend and enabled by the '-x renderscript'
+option or the '.rs' file extension.
+
+
+C++ Language Changes in Clang
+-----------------------------
+
+- Clang now enforces the rule that a *using-declaration* cannot name an enumerator of a
+ scoped enumeration.
+
+ .. code-block:: c++
+
+ namespace Foo { enum class E { e }; }
+ namespace Bar {
+ using Foo::E::e; // error
+ constexpr auto e = Foo::E::e; // ok
+ }
+
+- Clang now enforces the rule that an enumerator of an unscoped enumeration declared at
+ class scope can only be named by a *using-declaration* in a derived class.
+
+ .. code-block:: c++
+
+ class Foo { enum E { e }; }
+ using Foo::e; // error
+ static constexpr auto e = Foo::e; // ok
+
+
+C++1z Feature Support
+^^^^^^^^^^^^^^^^^^^^^
+
+Clang's experimental support for the upcoming C++1z standard can be enabled with ``-std=c++1z``.
+Changes to C++1z features since Clang 3.8:
+
+- The ``[[fallthrough]]``, ``[[nodiscard]]``, and ``[[maybe_unused]]`` attributes are
+ supported in C++11 onwards, and are largely synonymous with Clang's existing attributes
+ ``[[clang::fallthrough]]``, ``[[gnu::warn_unused_result]]``, and ``[[gnu::unused]]``.
+ Use ``-Wimplicit-fallthrough`` to warn on unannotated fallthrough within ``switch``
+ statements.
+
+- In C++1z mode, aggregate initialization can be performed for classes with base classes:
+
+ .. code-block:: c++
+
+ struct A { int n; };
+ struct B : A { int x, y; };
+ B b = { 1, 2, 3 }; // b.n == 1, b.x == 2, b.y == 3
+
+- The range in a range-based ``for`` statement can have different types for its ``begin``
+ and ``end`` iterators. This is permitted as an extension in C++11 onwards.
+
+- Lambda-expressions can explicitly capture ``*this`` (to capture the surrounding object
+ by copy). This is permitted as an extension in C++11 onwards.
+
+- Objects of enumeration type can be direct-list-initialized from a value of the underlying
+ type. ``E{n}`` is equivalent to ``E(n)``, except that it implies a check for a narrowing
+ conversion.
+
+- Unary *fold-expression*\s over an empty pack are now rejected for all operators
+ other than ``&&``, ``||``, and ``,``.
+
+OpenCL C Language Changes in Clang
+----------------------------------
+
+Clang now has support for all OpenCL 2.0 features. In particular, the following
+features have been completed since the previous release:
+
+- Pipe builtin functions (s6.13.16.2-4).
+- Dynamic parallelism support via the ``enqueue_kernel`` Clang builtin function,
+ as well as the kernel query functions from s6.13.17.6.
+- Address space conversion functions ``to_{global/local/private}``.
+- ``nosvm`` attribute support.
+- Improved diagnostic and generation of Clang Blocks used in OpenCL kernel code.
+- ``opencl_unroll_hint`` pragma.
+
+Several miscellaneous improvements have been made:
+
+- Supported extensions are now part of the target representation to give correct
+ diagnostics for unsupported target features during compilation. For example,
+ when compiling for a target that does not support the double precision
+ floating point extension, Clang will give an error when encountering the
+ ``cl_khr_fp64`` pragma. Several missing extensions were added covering up to
+ and including OpenCL 2.0.
+- Clang now comes with the OpenCL standard headers declaring builtin types and
+ functions up to and including OpenCL 2.0 in ``lib/Headers/opencl-c.h``. By
+ default, Clang will not include this header. It can be included either using
+ the regular ``-I<path to header location>`` directive or (if the default one
+ from installation is to be used) using the ``-finclude-default-header``
+ frontend flag.
+
+ Example:
+
+ .. code-block:: none
+
+ echo "bool is_wg_uniform(int i){return get_enqueued_local_size(i)==get_local_size(i);}" > test.cl
+ clang -cc1 -finclude-default-header -cl-std=CL2.0 test.cl
+
+ All builtin function declarations from OpenCL 2.0 will be automatically
+ visible in test.cl.
+- Image types have been improved with better diagnostics for access qualifiers.
+ Images with one access qualifier type cannot be used in declarations for
+ another type. Also qualifiers are now propagated from the frontend down to
+ libraries and backends.
+- Diagnostic improvements for OpenCL types, address spaces and vectors.
+- Half type literal support has been added. For example, ``1.0h`` represents a
+ floating point literal in half precision, i.e., the value ``0xH3C00``.
+- The Clang driver now accepts OpenCL compiler options ``-cl-*`` (following the
+ OpenCL Spec v1.1-1.2 s5.8). For example, the ``-cl-std=CL1.2`` option from the
+ spec enables compilation for OpenCL 1.2, or ``-cl-mad-enable`` will enable
+ fusing multiply-and-add operations.
+- Clang now uses function metadata instead of module metadata to propagate
+ information related to OpenCL kernels e.g. kernel argument information.
+
+OpenMP Support in Clang
+----------------------------------
+
+Added support for all non-offloading features from OpenMP 4.5, including using
+data members in private clauses of non-static member functions. Additionally,
+data members can be used as loop control variables in loop-based directives.
+
+Currently Clang supports OpenMP 3.1 and all non-offloading features of
+OpenMP 4.0/4.5. Offloading features are under development. Clang defines macro
+_OPENMP and sets it to OpenMP 3.1 (in accordance with OpenMP standard) by
+default. User may change this value using ``-fopenmp-version=[31|40|45]`` option.
+
+The codegen for OpenMP constructs was significantly improved to produce much
+more stable and faster code.
+
+AST Matchers
+------------
+
+- has and hasAnyArgument: Matchers no longer ignore parentheses and implicit
+ casts on the argument before applying the inner matcher. The fix was done to
+ allow for greater control by the user. In all existing checkers that use this
+ matcher all instances of code ``hasAnyArgument(<inner matcher>)`` or
+ ``has(<inner matcher>)`` must be changed to
+ ``hasAnyArgument(ignoringParenImpCasts(<inner matcher>))`` or
+ ``has(ignoringParenImpCasts(<inner matcher>))``.
+
+Static Analyzer
+---------------
+
+The analyzer now checks for incorrect usage of MPI APIs in C and C++. This
+check can be enabled by passing the following command to scan-build:
+``-enable-checker optin.mpi.MPI-Checker.``
+
+The analyzer now checks for improper instance cleanup up in Objective-C
+``-dealloc`` methods under manual retain/release.
+
+On Windows, checks for memory leaks, double frees, and use-after-free problems
+are now enabled by default.
+
+The analyzer now includes scan-build-py, an experimental reimplementation of
+scan-build in Python that also creates compilation databases.
+
+The scan-build tool now supports a ``--force-analyze-debug-code`` flag that
+forces projects to analyze in debug mode. This flag leaves in assertions and so
+typically results in fewer false positives.
+
+
+Additional Information
+======================
+
+A wide variety of additional information is available on the `Clang web
+page <http://clang.llvm.org/>`_. The web page contains versions of the
+API documentation which are up-to-date with the Subversion version of
+the source code. You can access versions of these documents specific to
+this release by going into the "``clang/docs/``" directory in the Clang
+tree.
+
+If you have any questions or comments about Clang, please feel free to
+contact us via the `mailing
+list <http://lists.llvm.org/mailman/listinfo/cfe-dev>`_.
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/SafeStack.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/SafeStack.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/SafeStack.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/SafeStack.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,198 @@
+=========
+SafeStack
+=========
+
+.. contents::
+ :local:
+
+Introduction
+============
+
+SafeStack is an instrumentation pass that protects programs against attacks
+based on stack buffer overflows, without introducing any measurable performance
+overhead. It works by separating the program stack into two distinct regions:
+the safe stack and the unsafe stack. The safe stack stores return addresses,
+register spills, and local variables that are always accessed in a safe way,
+while the unsafe stack stores everything else. This separation ensures that
+buffer overflows on the unsafe stack cannot be used to overwrite anything
+on the safe stack.
+
+SafeStack is a part of the `Code-Pointer Integrity (CPI) Project
+<http://dslab.epfl.ch/proj/cpi/>`_.
+
+Performance
+-----------
+
+The performance overhead of the SafeStack instrumentation is less than 0.1% on
+average across a variety of benchmarks (see the `Code-Pointer Integrity
+<http://dslab.epfl.ch/pubs/cpi.pdf>`__ paper for details). This is mainly
+because most small functions do not have any variables that require the unsafe
+stack and, hence, do not need unsafe stack frames to be created. The cost of
+creating unsafe stack frames for large functions is amortized by the cost of
+executing the function.
+
+In some cases, SafeStack actually improves the performance. Objects that end up
+being moved to the unsafe stack are usually large arrays or variables that are
+used through multiple stack frames. Moving such objects away from the safe
+stack increases the locality of frequently accessed values on the stack, such
+as register spills, return addresses, and small local variables.
+
+Compatibility
+-------------
+
+Most programs, static libraries, or individual files can be compiled
+with SafeStack as is. SafeStack requires basic runtime support, which, on most
+platforms, is implemented as a compiler-rt library that is automatically linked
+in when the program is compiled with SafeStack.
+
+Linking a DSO with SafeStack is not currently supported.
+
+Known compatibility limitations
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Certain code that relies on low-level stack manipulations requires adaption to
+work with SafeStack. One example is mark-and-sweep garbage collection
+implementations for C/C++ (e.g., Oilpan in chromium/blink), which must be
+changed to look for the live pointers on both safe and unsafe stacks.
+
+SafeStack supports linking statically modules that are compiled with and
+without SafeStack. An executable compiled with SafeStack can load dynamic
+libraries that are not compiled with SafeStack. At the moment, compiling
+dynamic libraries with SafeStack is not supported.
+
+Signal handlers that use ``sigaltstack()`` must not use the unsafe stack (see
+``__attribute__((no_sanitize("safe-stack")))`` below).
+
+Programs that use APIs from ``ucontext.h`` are not supported yet.
+
+Security
+--------
+
+SafeStack protects return addresses, spilled registers and local variables that
+are always accessed in a safe way by separating them in a dedicated safe stack
+region. The safe stack is automatically protected against stack-based buffer
+overflows, since it is disjoint from the unsafe stack in memory, and it itself
+is always accessed in a safe way. In the current implementation, the safe stack
+is protected against arbitrary memory write vulnerabilities though
+randomization and information hiding: the safe stack is allocated at a random
+address and the instrumentation ensures that no pointers to the safe stack are
+ever stored outside of the safe stack itself (see limitations below).
+
+Known security limitations
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+A complete protection against control-flow hijack attacks requires combining
+SafeStack with another mechanism that enforces the integrity of code pointers
+that are stored on the heap or the unsafe stack, such as `CPI
+<http://dslab.epfl.ch/proj/cpi/>`_, or a forward-edge control flow integrity
+mechanism that enforces correct calling conventions at indirect call sites,
+such as `IFCC <http://research.google.com/pubs/archive/42808.pdf>`_ with arity
+checks. Clang has control-flow integrity protection scheme for :doc:`C++ virtual
+calls <ControlFlowIntegrity>`, but not non-virtual indirect calls. With
+SafeStack alone, an attacker can overwrite a function pointer on the heap or
+the unsafe stack and cause a program to call arbitrary location, which in turn
+might enable stack pivoting and return-oriented programming.
+
+In its current implementation, SafeStack provides precise protection against
+stack-based buffer overflows, but protection against arbitrary memory write
+vulnerabilities is probabilistic and relies on randomization and information
+hiding. The randomization is currently based on system-enforced ASLR and shares
+its known security limitations. The safe stack pointer hiding is not perfect
+yet either: system library functions such as ``swapcontext``, exception
+handling mechanisms, intrinsics such as ``__builtin_frame_address``, or
+low-level bugs in runtime support could leak the safe stack pointer. In the
+future, such leaks could be detected by static or dynamic analysis tools and
+prevented by adjusting such functions to either encrypt the stack pointer when
+storing it in the heap (as already done e.g., by ``setjmp``/``longjmp``
+implementation in glibc), or store it in a safe region instead.
+
+The `CPI paper <http://dslab.epfl.ch/pubs/cpi.pdf>`_ describes two alternative,
+stronger safe stack protection mechanisms, that rely on software fault
+isolation, or hardware segmentation (as available on x86-32 and some x86-64
+CPUs).
+
+At the moment, SafeStack assumes that the compiler's implementation is correct.
+This has not been verified except through manual code inspection, and could
+always regress in the future. It's therefore desirable to have a separate
+static or dynamic binary verification tool that would check the correctness of
+the SafeStack instrumentation in final binaries.
+
+Usage
+=====
+
+To enable SafeStack, just pass ``-fsanitize=safe-stack`` flag to both compile
+and link command lines.
+
+Supported Platforms
+-------------------
+
+SafeStack was tested on Linux, FreeBSD and MacOSX.
+
+Low-level API
+-------------
+
+``__has_feature(safe_stack)``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+In some rare cases one may need to execute different code depending on
+whether SafeStack is enabled. The macro ``__has_feature(safe_stack)`` can
+be used for this purpose.
+
+.. code-block:: c
+
+ #if __has_feature(safe_stack)
+ // code that builds only under SafeStack
+ #endif
+
+``__attribute__((no_sanitize("safe-stack")))``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Use ``__attribute__((no_sanitize("safe-stack")))`` on a function declaration
+to specify that the safe stack instrumentation should not be applied to that
+function, even if enabled globally (see ``-fsanitize=safe-stack`` flag). This
+attribute may be required for functions that make assumptions about the
+exact layout of their stack frames.
+
+All local variables in functions with this attribute will be stored on the safe
+stack. The safe stack remains unprotected against memory errors when accessing
+these variables, so extra care must be taken to manually ensure that all such
+accesses are safe. Furthermore, the addresses of such local variables should
+never be stored on the heap, as it would leak the location of the SafeStack.
+
+``__builtin___get_unsafe_stack_ptr()``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This builtin function returns current unsafe stack pointer of the current
+thread.
+
+``__builtin___get_unsafe_stack_start()``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This builtin function returns a pointer to the start of the unsafe stack of the
+current thread.
+
+Design
+======
+
+Please refer to the `Code-Pointer Integrity <http://dslab.epfl.ch/proj/cpi/>`__
+project page for more information about the design of the SafeStack and its
+related technologies.
+
+setjmp and exception handling
+-----------------------------
+
+The `OSDI'14 paper <http://dslab.epfl.ch/pubs/cpi.pdf>`_ mentions that
+on Linux the instrumentation pass finds calls to setjmp or functions that
+may throw an exception, and inserts required instrumentation at their call
+sites. Specifically, the instrumentation pass saves the shadow stack pointer
+on the safe stack before the call site, and restores it either after the
+call to setjmp or after an exception has been caught. This is implemented
+in the function ``SafeStack::createStackRestorePoints``.
+
+Publications
+------------
+
+`Code-Pointer Integrity <http://dslab.epfl.ch/pubs/cpi.pdf>`__.
+Volodymyr Kuznetsov, Laszlo Szekeres, Mathias Payer, George Candea, R. Sekar, Dawn Song.
+USENIX Symposium on Operating Systems Design and Implementation
+(`OSDI <https://www.usenix.org/conference/osdi14>`_), Broomfield, CO, October 2014
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/SanitizerCoverage.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/SanitizerCoverage.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/SanitizerCoverage.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/SanitizerCoverage.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,455 @@
+=================
+SanitizerCoverage
+=================
+
+.. contents::
+ :local:
+
+Introduction
+============
+
+Sanitizer tools have a very simple code coverage tool built in. It allows to
+get function-level, basic-block-level, and edge-level coverage at a very low
+cost.
+
+How to build and run
+====================
+
+SanitizerCoverage can be used with :doc:`AddressSanitizer`,
+:doc:`LeakSanitizer`, :doc:`MemorySanitizer`,
+UndefinedBehaviorSanitizer, or without any sanitizer. Pass one of the
+following compile-time flags:
+
+* ``-fsanitize-coverage=func`` for function-level coverage (very fast).
+* ``-fsanitize-coverage=bb`` for basic-block-level coverage (may add up to 30%
+ **extra** slowdown).
+* ``-fsanitize-coverage=edge`` for edge-level coverage (up to 40% slowdown).
+
+You may also specify ``-fsanitize-coverage=indirect-calls`` for
+additional `caller-callee coverage`_.
+
+At run time, pass ``coverage=1`` in ``ASAN_OPTIONS``,
+``LSAN_OPTIONS``, ``MSAN_OPTIONS`` or ``UBSAN_OPTIONS``, as
+appropriate. For the standalone coverage mode, use ``UBSAN_OPTIONS``.
+
+To get `Coverage counters`_, add ``-fsanitize-coverage=8bit-counters``
+to one of the above compile-time flags. At runtime, use
+``*SAN_OPTIONS=coverage=1:coverage_counters=1``.
+
+Example:
+
+.. code-block:: console
+
+ % cat -n cov.cc
+ 1 #include <stdio.h>
+ 2 __attribute__((noinline))
+ 3 void foo() { printf("foo\n"); }
+ 4
+ 5 int main(int argc, char **argv) {
+ 6 if (argc == 2)
+ 7 foo();
+ 8 printf("main\n");
+ 9 }
+ % clang++ -g cov.cc -fsanitize=address -fsanitize-coverage=func
+ % ASAN_OPTIONS=coverage=1 ./a.out; ls -l *sancov
+ main
+ -rw-r----- 1 kcc eng 4 Nov 27 12:21 a.out.22673.sancov
+ % ASAN_OPTIONS=coverage=1 ./a.out foo ; ls -l *sancov
+ foo
+ main
+ -rw-r----- 1 kcc eng 4 Nov 27 12:21 a.out.22673.sancov
+ -rw-r----- 1 kcc eng 8 Nov 27 12:21 a.out.22679.sancov
+
+Every time you run an executable instrumented with SanitizerCoverage
+one ``*.sancov`` file is created during the process shutdown.
+If the executable is dynamically linked against instrumented DSOs,
+one ``*.sancov`` file will be also created for every DSO.
+
+Postprocessing
+==============
+
+The format of ``*.sancov`` files is very simple: the first 8 bytes is the magic,
+one of ``0xC0BFFFFFFFFFFF64`` and ``0xC0BFFFFFFFFFFF32``. The last byte of the
+magic defines the size of the following offsets. The rest of the data is the
+offsets in the corresponding binary/DSO that were executed during the run.
+
+A simple script
+``$LLVM/projects/compiler-rt/lib/sanitizer_common/scripts/sancov.py`` is
+provided to dump these offsets.
+
+.. code-block:: console
+
+ % sancov.py print a.out.22679.sancov a.out.22673.sancov
+ sancov.py: read 2 PCs from a.out.22679.sancov
+ sancov.py: read 1 PCs from a.out.22673.sancov
+ sancov.py: 2 files merged; 2 PCs total
+ 0x465250
+ 0x4652a0
+
+You can then filter the output of ``sancov.py`` through ``addr2line --exe
+ObjectFile`` or ``llvm-symbolizer --obj ObjectFile`` to get file names and line
+numbers:
+
+.. code-block:: console
+
+ % sancov.py print a.out.22679.sancov a.out.22673.sancov 2> /dev/null | llvm-symbolizer --obj a.out
+ cov.cc:3
+ cov.cc:5
+
+Sancov Tool
+===========
+
+A new experimental ``sancov`` tool is developed to process coverage files.
+The tool is part of LLVM project and is currently supported only on Linux.
+It can handle symbolization tasks autonomously without any extra support
+from the environment. You need to pass .sancov files (named
+``<module_name>.<pid>.sancov`` and paths to all corresponding binary elf files.
+Sancov matches these files using module names and binaries file names.
+
+.. code-block:: console
+
+ USAGE: sancov [options] <action> (<binary file>|<.sancov file>)...
+
+ Action (required)
+ -print - Print coverage addresses
+ -covered-functions - Print all covered functions.
+ -not-covered-functions - Print all not covered functions.
+ -html-report - Print HTML coverage report.
+
+ Options
+ -blacklist=<string> - Blacklist file (sanitizer blacklist format).
+ -demangle - Print demangled function name.
+ -strip_path_prefix=<string> - Strip this prefix from file paths in reports
+
+
+Automatic HTML Report Generation
+================================
+
+If ``*SAN_OPTIONS`` contains ``html_cov_report=1`` option set, then html
+coverage report would be automatically generated alongside the coverage files.
+The ``sancov`` binary should be present in ``PATH`` or
+``sancov_path=<path_to_sancov`` option can be used to specify tool location.
+
+
+How good is the coverage?
+=========================
+
+It is possible to find out which PCs are not covered, by subtracting the covered
+set from the set of all instrumented PCs. The latter can be obtained by listing
+all callsites of ``__sanitizer_cov()`` in the binary. On Linux, ``sancov.py``
+can do this for you. Just supply the path to binary and a list of covered PCs:
+
+.. code-block:: console
+
+ % sancov.py print a.out.12345.sancov > covered.txt
+ sancov.py: read 2 64-bit PCs from a.out.12345.sancov
+ sancov.py: 1 file merged; 2 PCs total
+ % sancov.py missing a.out < covered.txt
+ sancov.py: found 3 instrumented PCs in a.out
+ sancov.py: read 2 PCs from stdin
+ sancov.py: 1 PCs missing from coverage
+ 0x4cc61c
+
+Edge coverage
+=============
+
+Consider this code:
+
+.. code-block:: c++
+
+ void foo(int *a) {
+ if (a)
+ *a = 0;
+ }
+
+It contains 3 basic blocks, let's name them A, B, C:
+
+.. code-block:: none
+
+ A
+ |\
+ | \
+ | B
+ | /
+ |/
+ C
+
+If blocks A, B, and C are all covered we know for certain that the edges A=>B
+and B=>C were executed, but we still don't know if the edge A=>C was executed.
+Such edges of control flow graph are called
+`critical <http://en.wikipedia.org/wiki/Control_flow_graph#Special_edges>`_. The
+edge-level coverage (``-fsanitize-coverage=edge``) simply splits all critical
+edges by introducing new dummy blocks and then instruments those blocks:
+
+.. code-block:: none
+
+ A
+ |\
+ | \
+ D B
+ | /
+ |/
+ C
+
+Bitset
+======
+
+When ``coverage_bitset=1`` run-time flag is given, the coverage will also be
+dumped as a bitset (text file with 1 for blocks that have been executed and 0
+for blocks that were not).
+
+.. code-block:: console
+
+ % clang++ -fsanitize=address -fsanitize-coverage=edge cov.cc
+ % ASAN_OPTIONS="coverage=1:coverage_bitset=1" ./a.out
+ main
+ % ASAN_OPTIONS="coverage=1:coverage_bitset=1" ./a.out 1
+ foo
+ main
+ % head *bitset*
+ ==> a.out.38214.bitset-sancov <==
+ 01101
+ ==> a.out.6128.bitset-sancov <==
+ 11011%
+
+For a given executable the length of the bitset is always the same (well,
+unless dlopen/dlclose come into play), so the bitset coverage can be
+easily used for bitset-based corpus distillation.
+
+Caller-callee coverage
+======================
+
+(Experimental!)
+Every indirect function call is instrumented with a run-time function call that
+captures caller and callee. At the shutdown time the process dumps a separate
+file called ``caller-callee.PID.sancov`` which contains caller/callee pairs as
+pairs of lines (odd lines are callers, even lines are callees)
+
+.. code-block:: console
+
+ a.out 0x4a2e0c
+ a.out 0x4a6510
+ a.out 0x4a2e0c
+ a.out 0x4a87f0
+
+Current limitations:
+
+* Only the first 14 callees for every caller are recorded, the rest are silently
+ ignored.
+* The output format is not very compact since caller and callee may reside in
+ different modules and we need to spell out the module names.
+* The routine that dumps the output is not optimized for speed
+* Only Linux x86_64 is tested so far.
+* Sandboxes are not supported.
+
+Coverage counters
+=================
+
+This experimental feature is inspired by
+`AFL <http://lcamtuf.coredump.cx/afl/technical_details.txt>`__'s coverage
+instrumentation. With additional compile-time and run-time flags you can get
+more sensitive coverage information. In addition to boolean values assigned to
+every basic block (edge) the instrumentation will collect imprecise counters.
+On exit, every counter will be mapped to a 8-bit bitset representing counter
+ranges: ``1, 2, 3, 4-7, 8-15, 16-31, 32-127, 128+`` and those 8-bit bitsets will
+be dumped to disk.
+
+.. code-block:: console
+
+ % clang++ -g cov.cc -fsanitize=address -fsanitize-coverage=edge,8bit-counters
+ % ASAN_OPTIONS="coverage=1:coverage_counters=1" ./a.out
+ % ls -l *counters-sancov
+ ... a.out.17110.counters-sancov
+ % xxd *counters-sancov
+ 0000000: 0001 0100 01
+
+These counters may also be used for in-process coverage-guided fuzzers. See
+``include/sanitizer/coverage_interface.h``:
+
+.. code-block:: c++
+
+ // The coverage instrumentation may optionally provide imprecise counters.
+ // Rather than exposing the counter values to the user we instead map
+ // the counters to a bitset.
+ // Every counter is associated with 8 bits in the bitset.
+ // We define 8 value ranges: 1, 2, 3, 4-7, 8-15, 16-31, 32-127, 128+
+ // The i-th bit is set to 1 if the counter value is in the i-th range.
+ // This counter-based coverage implementation is *not* thread-safe.
+
+ // Returns the number of registered coverage counters.
+ uintptr_t __sanitizer_get_number_of_counters();
+ // Updates the counter 'bitset', clears the counters and returns the number of
+ // new bits in 'bitset'.
+ // If 'bitset' is nullptr, only clears the counters.
+ // Otherwise 'bitset' should be at least
+ // __sanitizer_get_number_of_counters bytes long and 8-aligned.
+ uintptr_t
+ __sanitizer_update_counter_bitset_and_clear_counters(uint8_t *bitset);
+
+Tracing basic blocks
+====================
+Experimental support for basic block (or edge) tracing.
+With ``-fsanitize-coverage=trace-bb`` the compiler will insert
+``__sanitizer_cov_trace_basic_block(s32 *id)`` before every function, basic block, or edge
+(depending on the value of ``-fsanitize-coverage=[func,bb,edge]``).
+Example:
+
+.. code-block:: console
+
+ % clang -g -fsanitize=address -fsanitize-coverage=edge,trace-bb foo.cc
+ % ASAN_OPTIONS=coverage=1 ./a.out
+
+This will produce two files after the process exit:
+`trace-points.PID.sancov` and `trace-events.PID.sancov`.
+The first file will contain a textual description of all the instrumented points in the program
+in the form that you can feed into llvm-symbolizer (e.g. `a.out 0x4dca89`), one per line.
+The second file will contain the actual execution trace as a sequence of 4-byte integers
+-- these integers are the indices into the array of instrumented points (the first file).
+
+Basic block tracing is currently supported only for single-threaded applications.
+
+
+Tracing PCs
+===========
+*Experimental* feature similar to tracing basic blocks, but with a different API.
+With ``-fsanitize-coverage=trace-pc`` the compiler will insert
+``__sanitizer_cov_trace_pc()`` on every edge.
+With an additional ``...=trace-pc,indirect-calls`` flag
+``__sanitizer_cov_trace_pc_indirect(void *callee)`` will be inserted on every indirect call.
+These callbacks are not implemented in the Sanitizer run-time and should be defined
+by the user. So, these flags do not require the other sanitizer to be used.
+This mechanism is used for fuzzing the Linux kernel (https://github.com/google/syzkaller)
+and can be used with `AFL <http://lcamtuf.coredump.cx/afl>`__.
+
+Tracing data flow
+=================
+
+An *experimental* feature to support data-flow-guided fuzzing.
+With ``-fsanitize-coverage=trace-cmp`` the compiler will insert extra instrumentation
+around comparison instructions and switch statements.
+The fuzzer will need to define the following functions,
+they will be called by the instrumented code.
+
+.. code-block:: c++
+
+ // Called before a comparison instruction.
+ // SizeAndType is a packed value containing
+ // - [63:32] the Size of the operands of comparison in bits
+ // - [31:0] the Type of comparison (one of ICMP_EQ, ... ICMP_SLE)
+ // Arg1 and Arg2 are arguments of the comparison.
+ void __sanitizer_cov_trace_cmp(uint64_t SizeAndType, uint64_t Arg1, uint64_t Arg2);
+
+ // Called before a switch statement.
+ // Val is the switch operand.
+ // Cases[0] is the number of case constants.
+ // Cases[1] is the size of Val in bits.
+ // Cases[2:] are the case constants.
+ void __sanitizer_cov_trace_switch(uint64_t Val, uint64_t *Cases);
+
+This interface is a subject to change.
+The current implementation is not thread-safe and thus can be safely used only for single-threaded targets.
+
+Output directory
+================
+
+By default, .sancov files are created in the current working directory.
+This can be changed with ``ASAN_OPTIONS=coverage_dir=/path``:
+
+.. code-block:: console
+
+ % ASAN_OPTIONS="coverage=1:coverage_dir=/tmp/cov" ./a.out foo
+ % ls -l /tmp/cov/*sancov
+ -rw-r----- 1 kcc eng 4 Nov 27 12:21 a.out.22673.sancov
+ -rw-r----- 1 kcc eng 8 Nov 27 12:21 a.out.22679.sancov
+
+Sudden death
+============
+
+Normally, coverage data is collected in memory and saved to disk when the
+program exits (with an ``atexit()`` handler), when a SIGSEGV is caught, or when
+``__sanitizer_cov_dump()`` is called.
+
+If the program ends with a signal that ASan does not handle (or can not handle
+at all, like SIGKILL), coverage data will be lost. This is a big problem on
+Android, where SIGKILL is a normal way of evicting applications from memory.
+
+With ``ASAN_OPTIONS=coverage=1:coverage_direct=1`` coverage data is written to a
+memory-mapped file as soon as it collected.
+
+.. code-block:: console
+
+ % ASAN_OPTIONS="coverage=1:coverage_direct=1" ./a.out
+ main
+ % ls
+ 7036.sancov.map 7036.sancov.raw a.out
+ % sancov.py rawunpack 7036.sancov.raw
+ sancov.py: reading map 7036.sancov.map
+ sancov.py: unpacking 7036.sancov.raw
+ writing 1 PCs to a.out.7036.sancov
+ % sancov.py print a.out.7036.sancov
+ sancov.py: read 1 PCs from a.out.7036.sancov
+ sancov.py: 1 files merged; 1 PCs total
+ 0x4b2bae
+
+Note that on 64-bit platforms, this method writes 2x more data than the default,
+because it stores full PC values instead of 32-bit offsets.
+
+In-process fuzzing
+==================
+
+Coverage data could be useful for fuzzers and sometimes it is preferable to run
+a fuzzer in the same process as the code being fuzzed (in-process fuzzer).
+
+You can use ``__sanitizer_get_total_unique_coverage()`` from
+``<sanitizer/coverage_interface.h>`` which returns the number of currently
+covered entities in the program. This will tell the fuzzer if the coverage has
+increased after testing every new input.
+
+If a fuzzer finds a bug in the ASan run, you will need to save the reproducer
+before exiting the process. Use ``__asan_set_death_callback`` from
+``<sanitizer/asan_interface.h>`` to do that.
+
+An example of such fuzzer can be found in `the LLVM tree
+<http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Fuzzer/README.txt?view=markup>`_.
+
+Performance
+===========
+
+This coverage implementation is **fast**. With function-level coverage
+(``-fsanitize-coverage=func``) the overhead is not measurable. With
+basic-block-level coverage (``-fsanitize-coverage=bb``) the overhead varies
+between 0 and 25%.
+
+============== ========= ========= ========= ========= ========= =========
+ benchmark cov0 cov1 diff 0-1 cov2 diff 0-2 diff 1-2
+============== ========= ========= ========= ========= ========= =========
+ 400.perlbench 1296.00 1307.00 1.01 1465.00 1.13 1.12
+ 401.bzip2 858.00 854.00 1.00 1010.00 1.18 1.18
+ 403.gcc 613.00 617.00 1.01 683.00 1.11 1.11
+ 429.mcf 605.00 582.00 0.96 610.00 1.01 1.05
+ 445.gobmk 896.00 880.00 0.98 1050.00 1.17 1.19
+ 456.hmmer 892.00 892.00 1.00 918.00 1.03 1.03
+ 458.sjeng 995.00 1009.00 1.01 1217.00 1.22 1.21
+462.libquantum 497.00 492.00 0.99 534.00 1.07 1.09
+ 464.h264ref 1461.00 1467.00 1.00 1543.00 1.06 1.05
+ 471.omnetpp 575.00 590.00 1.03 660.00 1.15 1.12
+ 473.astar 658.00 652.00 0.99 715.00 1.09 1.10
+ 483.xalancbmk 471.00 491.00 1.04 582.00 1.24 1.19
+ 433.milc 616.00 627.00 1.02 627.00 1.02 1.00
+ 444.namd 602.00 601.00 1.00 654.00 1.09 1.09
+ 447.dealII 630.00 634.00 1.01 653.00 1.04 1.03
+ 450.soplex 365.00 368.00 1.01 395.00 1.08 1.07
+ 453.povray 427.00 434.00 1.02 495.00 1.16 1.14
+ 470.lbm 357.00 375.00 1.05 370.00 1.04 0.99
+ 482.sphinx3 927.00 928.00 1.00 1000.00 1.08 1.08
+============== ========= ========= ========= ========= ========= =========
+
+Why another coverage?
+=====================
+
+Why did we implement yet another code coverage?
+ * We needed something that is lightning fast, plays well with
+ AddressSanitizer, and does not significantly increase the binary size.
+ * Traditional coverage implementations based in global counters
+ `suffer from contention on counters
+ <https://groups.google.com/forum/#!topic/llvm-dev/cDqYgnxNEhY>`_.
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/SanitizerSpecialCaseList.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/SanitizerSpecialCaseList.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/SanitizerSpecialCaseList.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/SanitizerSpecialCaseList.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,79 @@
+===========================
+Sanitizer special case list
+===========================
+
+.. contents::
+ :local:
+
+Introduction
+============
+
+This document describes the way to disable or alter the behavior of
+sanitizer tools for certain source-level entities by providing a special
+file at compile-time.
+
+Goal and usage
+==============
+
+User of sanitizer tools, such as :doc:`AddressSanitizer`, :doc:`ThreadSanitizer`
+or :doc:`MemorySanitizer` may want to disable or alter some checks for
+certain source-level entities to:
+
+* speedup hot function, which is known to be correct;
+* ignore a function that does some low-level magic (e.g. walks through the
+ thread stack, bypassing the frame boundaries);
+* ignore a known problem.
+
+To achieve this, user may create a file listing the entities they want to
+ignore, and pass it to clang at compile-time using
+``-fsanitize-blacklist`` flag. See :doc:`UsersManual` for details.
+
+Example
+=======
+
+.. code-block:: bash
+
+ $ cat foo.c
+ #include <stdlib.h>
+ void bad_foo() {
+ int *a = (int*)malloc(40);
+ a[10] = 1;
+ }
+ int main() { bad_foo(); }
+ $ cat blacklist.txt
+ # Ignore reports from bad_foo function.
+ fun:bad_foo
+ $ clang -fsanitize=address foo.c ; ./a.out
+ # AddressSanitizer prints an error report.
+ $ clang -fsanitize=address -fsanitize-blacklist=blacklist.txt foo.c ; ./a.out
+ # No error report here.
+
+Format
+======
+
+Each line contains an entity type, followed by a colon and a regular
+expression, specifying the names of the entities, optionally followed by
+an equals sign and a tool-specific category. Empty lines and lines starting
+with "#" are ignored. The meanining of ``*`` in regular expression for entity
+names is different - it is treated as in shell wildcarding. Two generic
+entity types are ``src`` and ``fun``, which allow user to add, respectively,
+source files and functions to special case list. Some sanitizer tools may
+introduce custom entity types - refer to tool-specific docs.
+
+.. code-block:: bash
+
+ # Lines starting with # are ignored.
+ # Turn off checks for the source file (use absolute path or path relative
+ # to the current working directory):
+ src:/path/to/source/file.c
+ # Turn off checks for a particular functions (use mangled names):
+ fun:MyFooBar
+ fun:_Z8MyFooBarv
+ # Extended regular expressions are supported:
+ fun:bad_(foo|bar)
+ src:bad_source[1-9].c
+ # Shell like usage of * is supported (* is treated as .*):
+ src:bad/sources/*
+ fun:*BadFunction*
+ # Specific sanitizer tools may introduce categories.
+ src:/special/path/*=special_sources
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/SanitizerStats.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/SanitizerStats.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/SanitizerStats.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/SanitizerStats.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,62 @@
+==============
+SanitizerStats
+==============
+
+.. contents::
+ :local:
+
+Introduction
+============
+
+The sanitizers support a simple mechanism for gathering profiling statistics
+to help understand the overhead associated with sanitizers.
+
+How to build and run
+====================
+
+SanitizerStats can currently only be used with :doc:`ControlFlowIntegrity`.
+In addition to ``-fsanitize=cfi*``, pass the ``-fsanitize-stats`` flag.
+This will cause the program to count the number of times that each control
+flow integrity check in the program fires.
+
+At run time, set the ``SANITIZER_STATS_PATH`` environment variable to direct
+statistics output to a file. The file will be written on process exit.
+The following substitutions will be applied to the environment variable:
+
+ - ``%b`` -- The executable basename.
+ - ``%p`` -- The process ID.
+
+You can also send the ``SIGUSR2`` signal to a process to make it write
+sanitizer statistics immediately.
+
+The ``sanstats`` program can be used to dump statistics. It takes as a
+command line argument the path to a statistics file produced by a program
+compiled with ``-fsanitize-stats``.
+
+The output of ``sanstats`` is in four columns, separated by spaces. The first
+column is the file and line number of the call site. The second column is
+the function name. The third column is the type of statistic gathered (in
+this case, the type of control flow integrity check). The fourth column is
+the call count.
+
+Example:
+
+.. code-block:: console
+
+ $ cat -n vcall.cc
+ 1 struct A {
+ 2 virtual void f() {}
+ 3 };
+ 4
+ 5 __attribute__((noinline)) void g(A *a) {
+ 6 a->f();
+ 7 }
+ 8
+ 9 int main() {
+ 10 A a;
+ 11 g(&a);
+ 12 }
+ $ clang++ -fsanitize=cfi -flto -fuse-ld=gold vcall.cc -fsanitize-stats -g
+ $ SANITIZER_STATS_PATH=a.stats ./a.out
+ $ sanstats a.stats
+ vcall.cc:6 _Z1gP1A cfi-vcall 1
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/SourceBasedCodeCoverage.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/SourceBasedCodeCoverage.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/SourceBasedCodeCoverage.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/SourceBasedCodeCoverage.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,237 @@
+==========================
+Source-based Code Coverage
+==========================
+
+.. contents::
+ :local:
+
+Introduction
+============
+
+This document explains how to use clang's source-based code coverage feature.
+It's called "source-based" because it operates on AST and preprocessor
+information directly. This allows it to generate very precise coverage data.
+
+Clang ships two other code coverage implementations:
+
+* :doc:`SanitizerCoverage` - A low-overhead tool meant for use alongside the
+ various sanitizers. It can provide up to edge-level coverage.
+
+* gcov - A GCC-compatible coverage implementation which operates on DebugInfo.
+
+From this point onwards "code coverage" will refer to the source-based kind.
+
+The code coverage workflow
+==========================
+
+The code coverage workflow consists of three main steps:
+
+* Compiling with coverage enabled.
+
+* Running the instrumented program.
+
+* Creating coverage reports.
+
+The next few sections work through a complete, copy-'n-paste friendly example
+based on this program:
+
+.. code-block:: cpp
+
+ % cat <<EOF > foo.cc
+ #define BAR(x) ((x) || (x))
+ template <typename T> void foo(T x) {
+ for (unsigned I = 0; I < 10; ++I) { BAR(I); }
+ }
+ int main() {
+ foo<int>(0);
+ foo<float>(0);
+ return 0;
+ }
+ EOF
+
+Compiling with coverage enabled
+===============================
+
+To compile code with coverage enabled, pass ``-fprofile-instr-generate
+-fcoverage-mapping`` to the compiler:
+
+.. code-block:: console
+
+ # Step 1: Compile with coverage enabled.
+ % clang++ -fprofile-instr-generate -fcoverage-mapping foo.cc -o foo
+
+Note that linking together code with and without coverage instrumentation is
+supported: any uninstrumented code simply won't be accounted for.
+
+Running the instrumented program
+================================
+
+The next step is to run the instrumented program. When the program exits it
+will write a **raw profile** to the path specified by the ``LLVM_PROFILE_FILE``
+environment variable. If that variable does not exist, the profile is written
+to ``default.profraw`` in the current directory of the program. If
+``LLVM_PROFILE_FILE`` contains a path to a non-existent directory, the missing
+directory structure will be created. Additionally, the following special
+**pattern strings** are rewritten:
+
+* "%p" expands out to the process ID.
+
+* "%h" expands out to the hostname of the machine running the program.
+
+* "%Nm" expands out to the instrumented binary's signature. When this pattern
+ is specified, the runtime creates a pool of N raw profiles which are used for
+ on-line profile merging. The runtime takes care of selecting a raw profile
+ from the pool, locking it, and updating it before the program exits. If N is
+ not specified (i.e the pattern is "%m"), it's assumed that ``N = 1``. N must
+ be between 1 and 9. The merge pool specifier can only occur once per filename
+ pattern.
+
+.. code-block:: console
+
+ # Step 2: Run the program.
+ % LLVM_PROFILE_FILE="foo.profraw" ./foo
+
+Creating coverage reports
+=========================
+
+Raw profiles have to be **indexed** before they can be used to generate
+coverage reports. This is done using the "merge" tool in ``llvm-profdata``, so
+named because it can combine and index profiles at the same time:
+
+.. code-block:: console
+
+ # Step 3(a): Index the raw profile.
+ % llvm-profdata merge -sparse foo.profraw -o foo.profdata
+
+There are multiple different ways to render coverage reports. One option is to
+generate a line-oriented report:
+
+.. code-block:: console
+
+ # Step 3(b): Create a line-oriented coverage report.
+ % llvm-cov show ./foo -instr-profile=foo.profdata
+
+To demangle any C++ identifiers in the output, use:
+
+.. code-block:: console
+
+ % llvm-cov show ./foo -instr-profile=foo.profdata | c++filt -n
+
+This report includes a summary view as well as dedicated sub-views for
+templated functions and their instantiations. For our example program, we get
+distinct views for ``foo<int>(...)`` and ``foo<float>(...)``. If
+``-show-line-counts-or-regions`` is enabled, ``llvm-cov`` displays sub-line
+region counts (even in macro expansions):
+
+.. code-block:: none
+
+ 20| 1|#define BAR(x) ((x) || (x))
+ ^20 ^2
+ 2| 2|template <typename T> void foo(T x) {
+ 22| 3| for (unsigned I = 0; I < 10; ++I) { BAR(I); }
+ ^22 ^20 ^20^20
+ 2| 4|}
+ ------------------
+ | void foo<int>(int):
+ | 1| 2|template <typename T> void foo(T x) {
+ | 11| 3| for (unsigned I = 0; I < 10; ++I) { BAR(I); }
+ | ^11 ^10 ^10^10
+ | 1| 4|}
+ ------------------
+ | void foo<float>(int):
+ | 1| 2|template <typename T> void foo(T x) {
+ | 11| 3| for (unsigned I = 0; I < 10; ++I) { BAR(I); }
+ | ^11 ^10 ^10^10
+ | 1| 4|}
+ ------------------
+
+It's possible to generate a file-level summary of coverage statistics (instead
+of a line-oriented report) with:
+
+.. code-block:: console
+
+ # Step 3(c): Create a coverage summary.
+ % llvm-cov report ./foo -instr-profile=foo.profdata
+ Filename Regions Miss Cover Functions Executed
+ -----------------------------------------------------------------------
+ /tmp/foo.cc 13 0 100.00% 3 100.00%
+ -----------------------------------------------------------------------
+ TOTAL 13 0 100.00% 3 100.00%
+
+A few final notes:
+
+* The ``-sparse`` flag is optional but can result in dramatically smaller
+ indexed profiles. This option should not be used if the indexed profile will
+ be reused for PGO.
+
+* Raw profiles can be discarded after they are indexed. Advanced use of the
+ profile runtime library allows an instrumented program to merge profiling
+ information directly into an existing raw profile on disk. The details are
+ out of scope.
+
+* The ``llvm-profdata`` tool can be used to merge together multiple raw or
+ indexed profiles. To combine profiling data from multiple runs of a program,
+ try e.g:
+
+ .. code-block:: console
+
+ % llvm-profdata merge -sparse foo1.profraw foo2.profdata -o foo3.profdata
+
+Format compatibility guarantees
+===============================
+
+* There are no backwards or forwards compatibility guarantees for the raw
+ profile format. Raw profiles may be dependent on the specific compiler
+ revision used to generate them. It's inadvisable to store raw profiles for
+ long periods of time.
+
+* Tools must retain **backwards** compatibility with indexed profile formats.
+ These formats are not forwards-compatible: i.e, a tool which uses format
+ version X will not be able to understand format version (X+k).
+
+* There is a third format in play: the format of the coverage mappings emitted
+ into instrumented binaries. Tools must retain **backwards** compatibility
+ with these formats. These formats are not forwards-compatible.
+
+Using the profiling runtime without static initializers
+=======================================================
+
+By default the compiler runtime uses a static initializer to determine the
+profile output path and to register a writer function. To collect profiles
+without using static initializers, do this manually:
+
+* Export a ``int __llvm_profile_runtime`` symbol from each instrumented shared
+ library and executable. When the linker finds a definition of this symbol, it
+ knows to skip loading the object which contains the profiling runtime's
+ static initializer.
+
+* Forward-declare ``void __llvm_profile_initialize_file(void)`` and call it
+ once from each instrumented executable. This function parses
+ ``LLVM_PROFILE_FILE``, sets the output path, and truncates any existing files
+ at that path. To get the same behavior without truncating existing files,
+ pass a filename pattern string to ``void __llvm_profile_set_filename(char
+ *)``. These calls can be placed anywhere so long as they precede all calls
+ to ``__llvm_profile_write_file``.
+
+* Forward-declare ``int __llvm_profile_write_file(void)`` and call it to write
+ out a profile. This function returns 0 when it succeeds, and a non-zero value
+ otherwise. Calling this function multiple times appends profile data to an
+ existing on-disk raw profile.
+
+Drawbacks and limitations
+=========================
+
+* Code coverage does not handle unpredictable changes in control flow or stack
+ unwinding in the presence of exceptions precisely. Consider the following
+ function:
+
+ .. code-block:: cpp
+
+ int f() {
+ may_throw();
+ return 0;
+ }
+
+ If the call to ``may_throw()`` propagates an exception into ``f``, the code
+ coverage tool may mark the ``return`` statement as executed even though it is
+ not. A call to ``longjmp()`` can have similar effects.
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/ThreadSafetyAnalysis.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/ThreadSafetyAnalysis.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/ThreadSafetyAnalysis.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/ThreadSafetyAnalysis.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,950 @@
+
+======================
+Thread Safety Analysis
+======================
+
+Introduction
+============
+
+Clang Thread Safety Analysis is a C++ language extension which warns about
+potential race conditions in code. The analysis is completely static (i.e.
+compile-time); there is no run-time overhead. The analysis is still
+under active development, but it is mature enough to be deployed in an
+industrial setting. It is being developed by Google, in collaboration with
+CERT/SEI, and is used extensively in Google's internal code base.
+
+Thread safety analysis works very much like a type system for multi-threaded
+programs. In addition to declaring the *type* of data (e.g. ``int``, ``float``,
+etc.), the programmer can (optionally) declare how access to that data is
+controlled in a multi-threaded environment. For example, if ``foo`` is
+*guarded by* the mutex ``mu``, then the analysis will issue a warning whenever
+a piece of code reads or writes to ``foo`` without first locking ``mu``.
+Similarly, if there are particular routines that should only be called by
+the GUI thread, then the analysis will warn if other threads call those
+routines.
+
+Getting Started
+----------------
+
+.. code-block:: c++
+
+ #include "mutex.h"
+
+ class BankAccount {
+ private:
+ Mutex mu;
+ int balance GUARDED_BY(mu);
+
+ void depositImpl(int amount) {
+ balance += amount; // WARNING! Cannot write balance without locking mu.
+ }
+
+ void withdrawImpl(int amount) REQUIRES(mu) {
+ balance -= amount; // OK. Caller must have locked mu.
+ }
+
+ public:
+ void withdraw(int amount) {
+ mu.Lock();
+ withdrawImpl(amount); // OK. We've locked mu.
+ } // WARNING! Failed to unlock mu.
+
+ void transferFrom(BankAccount& b, int amount) {
+ mu.Lock();
+ b.withdrawImpl(amount); // WARNING! Calling withdrawImpl() requires locking b.mu.
+ depositImpl(amount); // OK. depositImpl() has no requirements.
+ mu.Unlock();
+ }
+ };
+
+This example demonstrates the basic concepts behind the analysis. The
+``GUARDED_BY`` attribute declares that a thread must lock ``mu`` before it can
+read or write to ``balance``, thus ensuring that the increment and decrement
+operations are atomic. Similarly, ``REQUIRES`` declares that
+the calling thread must lock ``mu`` before calling ``withdrawImpl``.
+Because the caller is assumed to have locked ``mu``, it is safe to modify
+``balance`` within the body of the method.
+
+The ``depositImpl()`` method does not have ``REQUIRES``, so the
+analysis issues a warning. Thread safety analysis is not inter-procedural, so
+caller requirements must be explicitly declared.
+There is also a warning in ``transferFrom()``, because although the method
+locks ``this->mu``, it does not lock ``b.mu``. The analysis understands
+that these are two separate mutexes, in two different objects.
+
+Finally, there is a warning in the ``withdraw()`` method, because it fails to
+unlock ``mu``. Every lock must have a corresponding unlock, and the analysis
+will detect both double locks, and double unlocks. A function is allowed to
+acquire a lock without releasing it, (or vice versa), but it must be annotated
+as such (using ``ACQUIRE``/``RELEASE``).
+
+
+Running The Analysis
+--------------------
+
+To run the analysis, simply compile with the ``-Wthread-safety`` flag, e.g.
+
+.. code-block:: bash
+
+ clang -c -Wthread-safety example.cpp
+
+Note that this example assumes the presence of a suitably annotated
+:ref:`mutexheader` that declares which methods perform locking,
+unlocking, and so on.
+
+
+Basic Concepts: Capabilities
+============================
+
+Thread safety analysis provides a way of protecting *resources* with
+*capabilities*. A resource is either a data member, or a function/method
+that provides access to some underlying resource. The analysis ensures that
+the calling thread cannot access the *resource* (i.e. call the function, or
+read/write the data) unless it has the *capability* to do so.
+
+Capabilities are associated with named C++ objects which declare specific
+methods to acquire and release the capability. The name of the object serves
+to identify the capability. The most common example is a mutex. For example,
+if ``mu`` is a mutex, then calling ``mu.Lock()`` causes the calling thread
+to acquire the capability to access data that is protected by ``mu``. Similarly,
+calling ``mu.Unlock()`` releases that capability.
+
+A thread may hold a capability either *exclusively* or *shared*. An exclusive
+capability can be held by only one thread at a time, while a shared capability
+can be held by many threads at the same time. This mechanism enforces a
+multiple-reader, single-writer pattern. Write operations to protected data
+require exclusive access, while read operations require only shared access.
+
+At any given moment during program execution, a thread holds a specific set of
+capabilities (e.g. the set of mutexes that it has locked.) These act like keys
+or tokens that allow the thread to access a given resource. Just like physical
+security keys, a thread cannot make copy of a capability, nor can it destroy
+one. A thread can only release a capability to another thread, or acquire one
+from another thread. The annotations are deliberately agnostic about the
+exact mechanism used to acquire and release capabilities; it assumes that the
+underlying implementation (e.g. the Mutex implementation) does the handoff in
+an appropriate manner.
+
+The set of capabilities that are actually held by a given thread at a given
+point in program execution is a run-time concept. The static analysis works
+by calculating an approximation of that set, called the *capability
+environment*. The capability environment is calculated for every program point,
+and describes the set of capabilities that are statically known to be held, or
+not held, at that particular point. This environment is a conservative
+approximation of the full set of capabilities that will actually held by a
+thread at run-time.
+
+
+Reference Guide
+===============
+
+The thread safety analysis uses attributes to declare threading constraints.
+Attributes must be attached to named declarations, such as classes, methods,
+and data members. Users are *strongly advised* to define macros for the various
+attributes; example definitions can be found in :ref:`mutexheader`, below.
+The following documentation assumes the use of macros.
+
+For historical reasons, prior versions of thread safety used macro names that
+were very lock-centric. These macros have since been renamed to fit a more
+general capability model. The prior names are still in use, and will be
+mentioned under the tag *previously* where appropriate.
+
+
+GUARDED_BY(c) and PT_GUARDED_BY(c)
+----------------------------------
+
+``GUARDED_BY`` is an attribute on data members, which declares that the data
+member is protected by the given capability. Read operations on the data
+require shared access, while write operations require exclusive access.
+
+``PT_GUARDED_BY`` is similar, but is intended for use on pointers and smart
+pointers. There is no constraint on the data member itself, but the *data that
+it points to* is protected by the given capability.
+
+.. code-block:: c++
+
+ Mutex mu;
+ int *p1 GUARDED_BY(mu);
+ int *p2 PT_GUARDED_BY(mu);
+ unique_ptr<int> p3 PT_GUARDED_BY(mu);
+
+ void test() {
+ p1 = 0; // Warning!
+
+ *p2 = 42; // Warning!
+ p2 = new int; // OK.
+
+ *p3 = 42; // Warning!
+ p3.reset(new int); // OK.
+ }
+
+
+REQUIRES(...), REQUIRES_SHARED(...)
+-----------------------------------
+
+*Previously*: ``EXCLUSIVE_LOCKS_REQUIRED``, ``SHARED_LOCKS_REQUIRED``
+
+``REQUIRES`` is an attribute on functions or methods, which
+declares that the calling thread must have exclusive access to the given
+capabilities. More than one capability may be specified. The capabilities
+must be held on entry to the function, *and must still be held on exit*.
+
+``REQUIRES_SHARED`` is similar, but requires only shared access.
+
+.. code-block:: c++
+
+ Mutex mu1, mu2;
+ int a GUARDED_BY(mu1);
+ int b GUARDED_BY(mu2);
+
+ void foo() REQUIRES(mu1, mu2) {
+ a = 0;
+ b = 0;
+ }
+
+ void test() {
+ mu1.Lock();
+ foo(); // Warning! Requires mu2.
+ mu1.Unlock();
+ }
+
+
+ACQUIRE(...), ACQUIRE_SHARED(...), RELEASE(...), RELEASE_SHARED(...)
+--------------------------------------------------------------------
+
+*Previously*: ``EXCLUSIVE_LOCK_FUNCTION``, ``SHARED_LOCK_FUNCTION``,
+``UNLOCK_FUNCTION``
+
+``ACQUIRE`` is an attribute on functions or methods, which
+declares that the function acquires a capability, but does not release it. The
+caller must not hold the given capability on entry, and it will hold the
+capability on exit. ``ACQUIRE_SHARED`` is similar.
+
+``RELEASE`` and ``RELEASE_SHARED`` declare that the function releases the given
+capability. The caller must hold the capability on entry, and will no longer
+hold it on exit. It does not matter whether the given capability is shared or
+exclusive.
+
+.. code-block:: c++
+
+ Mutex mu;
+ MyClass myObject GUARDED_BY(mu);
+
+ void lockAndInit() ACQUIRE(mu) {
+ mu.Lock();
+ myObject.init();
+ }
+
+ void cleanupAndUnlock() RELEASE(mu) {
+ myObject.cleanup();
+ } // Warning! Need to unlock mu.
+
+ void test() {
+ lockAndInit();
+ myObject.doSomething();
+ cleanupAndUnlock();
+ myObject.doSomething(); // Warning, mu is not locked.
+ }
+
+If no argument is passed to ``ACQUIRE`` or ``RELEASE``, then the argument is
+assumed to be ``this``, and the analysis will not check the body of the
+function. This pattern is intended for use by classes which hide locking
+details behind an abstract interface. For example:
+
+.. code-block:: c++
+
+ template <class T>
+ class CAPABILITY("mutex") Container {
+ private:
+ Mutex mu;
+ T* data;
+
+ public:
+ // Hide mu from public interface.
+ void Lock() ACQUIRE() { mu.Lock(); }
+ void Unlock() RELEASE() { mu.Unlock(); }
+
+ T& getElem(int i) { return data[i]; }
+ };
+
+ void test() {
+ Container<int> c;
+ c.Lock();
+ int i = c.getElem(0);
+ c.Unlock();
+ }
+
+
+EXCLUDES(...)
+-------------
+
+*Previously*: ``LOCKS_EXCLUDED``
+
+``EXCLUDES`` is an attribute on functions or methods, which declares that
+the caller must *not* hold the given capabilities. This annotation is
+used to prevent deadlock. Many mutex implementations are not re-entrant, so
+deadlock can occur if the function acquires the mutex a second time.
+
+.. code-block:: c++
+
+ Mutex mu;
+ int a GUARDED_BY(mu);
+
+ void clear() EXCLUDES(mu) {
+ mu.Lock();
+ a = 0;
+ mu.Unlock();
+ }
+
+ void reset() {
+ mu.Lock();
+ clear(); // Warning! Caller cannot hold 'mu'.
+ mu.Unlock();
+ }
+
+Unlike ``REQUIRES``, ``EXCLUDES`` is optional. The analysis will not issue a
+warning if the attribute is missing, which can lead to false negatives in some
+cases. This issue is discussed further in :ref:`negative`.
+
+
+NO_THREAD_SAFETY_ANALYSIS
+-------------------------
+
+``NO_THREAD_SAFETY_ANALYSIS`` is an attribute on functions or methods, which
+turns off thread safety checking for that method. It provides an escape hatch
+for functions which are either (1) deliberately thread-unsafe, or (2) are
+thread-safe, but too complicated for the analysis to understand. Reasons for
+(2) will be described in the :ref:`limitations`, below.
+
+.. code-block:: c++
+
+ class Counter {
+ Mutex mu;
+ int a GUARDED_BY(mu);
+
+ void unsafeIncrement() NO_THREAD_SAFETY_ANALYSIS { a++; }
+ };
+
+Unlike the other attributes, NO_THREAD_SAFETY_ANALYSIS is not part of the
+interface of a function, and should thus be placed on the function definition
+(in the ``.cc`` or ``.cpp`` file) rather than on the function declaration
+(in the header).
+
+
+RETURN_CAPABILITY(c)
+--------------------
+
+*Previously*: ``LOCK_RETURNED``
+
+``RETURN_CAPABILITY`` is an attribute on functions or methods, which declares
+that the function returns a reference to the given capability. It is used to
+annotate getter methods that return mutexes.
+
+.. code-block:: c++
+
+ class MyClass {
+ private:
+ Mutex mu;
+ int a GUARDED_BY(mu);
+
+ public:
+ Mutex* getMu() RETURN_CAPABILITY(mu) { return μ }
+
+ // analysis knows that getMu() == mu
+ void clear() REQUIRES(getMu()) { a = 0; }
+ };
+
+
+ACQUIRED_BEFORE(...), ACQUIRED_AFTER(...)
+-----------------------------------------
+
+``ACQUIRED_BEFORE`` and ``ACQUIRED_AFTER`` are attributes on member
+declarations, specifically declarations of mutexes or other capabilities.
+These declarations enforce a particular order in which the mutexes must be
+acquired, in order to prevent deadlock.
+
+.. code-block:: c++
+
+ Mutex m1;
+ Mutex m2 ACQUIRED_AFTER(m1);
+
+ // Alternative declaration
+ // Mutex m2;
+ // Mutex m1 ACQUIRED_BEFORE(m2);
+
+ void foo() {
+ m2.Lock();
+ m1.Lock(); // Warning! m2 must be acquired after m1.
+ m1.Unlock();
+ m2.Unlock();
+ }
+
+
+CAPABILITY(<string>)
+--------------------
+
+*Previously*: ``LOCKABLE``
+
+``CAPABILITY`` is an attribute on classes, which specifies that objects of the
+class can be used as a capability. The string argument specifies the kind of
+capability in error messages, e.g. ``"mutex"``. See the ``Container`` example
+given above, or the ``Mutex`` class in :ref:`mutexheader`.
+
+
+SCOPED_CAPABILITY
+-----------------
+
+*Previously*: ``SCOPED_LOCKABLE``
+
+``SCOPED_CAPABILITY`` is an attribute on classes that implement RAII-style
+locking, in which a capability is acquired in the constructor, and released in
+the destructor. Such classes require special handling because the constructor
+and destructor refer to the capability via different names; see the
+``MutexLocker`` class in :ref:`mutexheader`, below.
+
+
+TRY_ACQUIRE(<bool>, ...), TRY_ACQUIRE_SHARED(<bool>, ...)
+---------------------------------------------------------
+
+*Previously:* ``EXCLUSIVE_TRYLOCK_FUNCTION``, ``SHARED_TRYLOCK_FUNCTION``
+
+These are attributes on a function or method that tries to acquire the given
+capability, and returns a boolean value indicating success or failure.
+The first argument must be ``true`` or ``false``, to specify which return value
+indicates success, and the remaining arguments are interpreted in the same way
+as ``ACQUIRE``. See :ref:`mutexheader`, below, for example uses.
+
+
+ASSERT_CAPABILITY(...) and ASSERT_SHARED_CAPABILITY(...)
+--------------------------------------------------------
+
+*Previously:* ``ASSERT_EXCLUSIVE_LOCK``, ``ASSERT_SHARED_LOCK``
+
+These are attributes on a function or method that does a run-time test to see
+whether the calling thread holds the given capability. The function is assumed
+to fail (no return) if the capability is not held. See :ref:`mutexheader`,
+below, for example uses.
+
+
+GUARDED_VAR and PT_GUARDED_VAR
+------------------------------
+
+Use of these attributes has been deprecated.
+
+
+Warning flags
+-------------
+
+* ``-Wthread-safety``: Umbrella flag which turns on the following three:
+
+ + ``-Wthread-safety-attributes``: Sanity checks on attribute syntax.
+ + ``-Wthread-safety-analysis``: The core analysis.
+ + ``-Wthread-safety-precise``: Requires that mutex expressions match precisely.
+ This warning can be disabled for code which has a lot of aliases.
+ + ``-Wthread-safety-reference``: Checks when guarded members are passed by reference.
+
+
+:ref:`negative` are an experimental feature, which are enabled with:
+
+* ``-Wthread-safety-negative``: Negative capabilities. Off by default.
+
+When new features and checks are added to the analysis, they can often introduce
+additional warnings. Those warnings are initially released as *beta* warnings
+for a period of time, after which they are migrated into the standard analysis.
+
+* ``-Wthread-safety-beta``: New features. Off by default.
+
+
+.. _negative:
+
+Negative Capabilities
+=====================
+
+Thread Safety Analysis is designed to prevent both race conditions and
+deadlock. The GUARDED_BY and REQUIRES attributes prevent race conditions, by
+ensuring that a capability is held before reading or writing to guarded data,
+and the EXCLUDES attribute prevents deadlock, by making sure that a mutex is
+*not* held.
+
+However, EXCLUDES is an optional attribute, and does not provide the same
+safety guarantee as REQUIRES. In particular:
+
+ * A function which acquires a capability does not have to exclude it.
+ * A function which calls a function that excludes a capability does not
+ have transitively exclude that capability.
+
+As a result, EXCLUDES can easily produce false negatives:
+
+.. code-block:: c++
+
+ class Foo {
+ Mutex mu;
+
+ void foo() {
+ mu.Lock();
+ bar(); // No warning.
+ baz(); // No warning.
+ mu.Unlock();
+ }
+
+ void bar() { // No warning. (Should have EXCLUDES(mu)).
+ mu.Lock();
+ // ...
+ mu.Unlock();
+ }
+
+ void baz() {
+ bif(); // No warning. (Should have EXCLUDES(mu)).
+ }
+
+ void bif() EXCLUDES(mu);
+ };
+
+
+Negative requirements are an alternative EXCLUDES that provide
+a stronger safety guarantee. A negative requirement uses the REQUIRES
+attribute, in conjunction with the ``!`` operator, to indicate that a capability
+should *not* be held.
+
+For example, using ``REQUIRES(!mu)`` instead of ``EXCLUDES(mu)`` will produce
+the appropriate warnings:
+
+.. code-block:: c++
+
+ class FooNeg {
+ Mutex mu;
+
+ void foo() REQUIRES(!mu) { // foo() now requires !mu.
+ mu.Lock();
+ bar();
+ baz();
+ mu.Unlock();
+ }
+
+ void bar() {
+ mu.Lock(); // WARNING! Missing REQUIRES(!mu).
+ // ...
+ mu.Unlock();
+ }
+
+ void baz() {
+ bif(); // WARNING! Missing REQUIRES(!mu).
+ }
+
+ void bif() REQUIRES(!mu);
+ };
+
+
+Negative requirements are an experimental feature which is off by default,
+because it will produce many warnings in existing code. It can be enabled
+by passing ``-Wthread-safety-negative``.
+
+
+.. _faq:
+
+Frequently Asked Questions
+==========================
+
+(Q) Should I put attributes in the header file, or in the .cc/.cpp/.cxx file?
+
+(A) Attributes are part of the formal interface of a function, and should
+always go in the header, where they are visible to anything that includes
+the header. Attributes in the .cpp file are not visible outside of the
+immediate translation unit, which leads to false negatives and false positives.
+
+
+(Q) "*Mutex is not locked on every path through here?*" What does that mean?
+
+(A) See :ref:`conditional_locks`, below.
+
+
+.. _limitations:
+
+Known Limitations
+=================
+
+Lexical scope
+-------------
+
+Thread safety attributes contain ordinary C++ expressions, and thus follow
+ordinary C++ scoping rules. In particular, this means that mutexes and other
+capabilities must be declared before they can be used in an attribute.
+Use-before-declaration is okay within a single class, because attributes are
+parsed at the same time as method bodies. (C++ delays parsing of method bodies
+until the end of the class.) However, use-before-declaration is not allowed
+between classes, as illustrated below.
+
+.. code-block:: c++
+
+ class Foo;
+
+ class Bar {
+ void bar(Foo* f) REQUIRES(f->mu); // Error: mu undeclared.
+ };
+
+ class Foo {
+ Mutex mu;
+ };
+
+
+Private Mutexes
+---------------
+
+Good software engineering practice dictates that mutexes should be private
+members, because the locking mechanism used by a thread-safe class is part of
+its internal implementation. However, private mutexes can sometimes leak into
+the public interface of a class.
+Thread safety attributes follow normal C++ access restrictions, so if ``mu``
+is a private member of ``c``, then it is an error to write ``c.mu`` in an
+attribute.
+
+One workaround is to (ab)use the ``RETURN_CAPABILITY`` attribute to provide a
+public *name* for a private mutex, without actually exposing the underlying
+mutex. For example:
+
+.. code-block:: c++
+
+ class MyClass {
+ private:
+ Mutex mu;
+
+ public:
+ // For thread safety analysis only. Does not actually return mu.
+ Mutex* getMu() RETURN_CAPABILITY(mu) { return 0; }
+
+ void doSomething() REQUIRES(mu);
+ };
+
+ void doSomethingTwice(MyClass& c) REQUIRES(c.getMu()) {
+ // The analysis thinks that c.getMu() == c.mu
+ c.doSomething();
+ c.doSomething();
+ }
+
+In the above example, ``doSomethingTwice()`` is an external routine that
+requires ``c.mu`` to be locked, which cannot be declared directly because ``mu``
+is private. This pattern is discouraged because it
+violates encapsulation, but it is sometimes necessary, especially when adding
+annotations to an existing code base. The workaround is to define ``getMu()``
+as a fake getter method, which is provided only for the benefit of thread
+safety analysis.
+
+
+.. _conditional_locks:
+
+No conditionally held locks.
+----------------------------
+
+The analysis must be able to determine whether a lock is held, or not held, at
+every program point. Thus, sections of code where a lock *might be held* will
+generate spurious warnings (false positives). For example:
+
+.. code-block:: c++
+
+ void foo() {
+ bool b = needsToLock();
+ if (b) mu.Lock();
+ ... // Warning! Mutex 'mu' is not held on every path through here.
+ if (b) mu.Unlock();
+ }
+
+
+No checking inside constructors and destructors.
+------------------------------------------------
+
+The analysis currently does not do any checking inside constructors or
+destructors. In other words, every constructor and destructor is treated as
+if it was annotated with ``NO_THREAD_SAFETY_ANALYSIS``.
+The reason for this is that during initialization, only one thread typically
+has access to the object which is being initialized, and it is thus safe (and
+common practice) to initialize guarded members without acquiring any locks.
+The same is true of destructors.
+
+Ideally, the analysis would allow initialization of guarded members inside the
+object being initialized or destroyed, while still enforcing the usual access
+restrictions on everything else. However, this is difficult to enforce in
+practice, because in complex pointer-based data structures, it is hard to
+determine what data is owned by the enclosing object.
+
+No inlining.
+------------
+
+Thread safety analysis is strictly intra-procedural, just like ordinary type
+checking. It relies only on the declared attributes of a function, and will
+not attempt to inline any method calls. As a result, code such as the
+following will not work:
+
+.. code-block:: c++
+
+ template<class T>
+ class AutoCleanup {
+ T* object;
+ void (T::*mp)();
+
+ public:
+ AutoCleanup(T* obj, void (T::*imp)()) : object(obj), mp(imp) { }
+ ~AutoCleanup() { (object->*mp)(); }
+ };
+
+ Mutex mu;
+ void foo() {
+ mu.Lock();
+ AutoCleanup<Mutex>(&mu, &Mutex::Unlock);
+ // ...
+ } // Warning, mu is not unlocked.
+
+In this case, the destructor of ``Autocleanup`` calls ``mu.Unlock()``, so
+the warning is bogus. However,
+thread safety analysis cannot see the unlock, because it does not attempt to
+inline the destructor. Moreover, there is no way to annotate the destructor,
+because the destructor is calling a function that is not statically known.
+This pattern is simply not supported.
+
+
+No alias analysis.
+------------------
+
+The analysis currently does not track pointer aliases. Thus, there can be
+false positives if two pointers both point to the same mutex.
+
+
+.. code-block:: c++
+
+ class MutexUnlocker {
+ Mutex* mu;
+
+ public:
+ MutexUnlocker(Mutex* m) RELEASE(m) : mu(m) { mu->Unlock(); }
+ ~MutexUnlocker() ACQUIRE(mu) { mu->Lock(); }
+ };
+
+ Mutex mutex;
+ void test() REQUIRES(mutex) {
+ {
+ MutexUnlocker munl(&mutex); // unlocks mutex
+ doSomeIO();
+ } // Warning: locks munl.mu
+ }
+
+The MutexUnlocker class is intended to be the dual of the MutexLocker class,
+defined in :ref:`mutexheader`. However, it doesn't work because the analysis
+doesn't know that munl.mu == mutex. The SCOPED_CAPABILITY attribute handles
+aliasing for MutexLocker, but does so only for that particular pattern.
+
+
+ACQUIRED_BEFORE(...) and ACQUIRED_AFTER(...) are currently unimplemented.
+-------------------------------------------------------------------------
+
+To be fixed in a future update.
+
+
+.. _mutexheader:
+
+mutex.h
+=======
+
+Thread safety analysis can be used with any threading library, but it does
+require that the threading API be wrapped in classes and methods which have the
+appropriate annotations. The following code provides ``mutex.h`` as an example;
+these methods should be filled in to call the appropriate underlying
+implementation.
+
+
+.. code-block:: c++
+
+
+ #ifndef THREAD_SAFETY_ANALYSIS_MUTEX_H
+ #define THREAD_SAFETY_ANALYSIS_MUTEX_H
+
+ // Enable thread safety attributes only with clang.
+ // The attributes can be safely erased when compiling with other compilers.
+ #if defined(__clang__) && (!defined(SWIG))
+ #define THREAD_ANNOTATION_ATTRIBUTE__(x) __attribute__((x))
+ #else
+ #define THREAD_ANNOTATION_ATTRIBUTE__(x) // no-op
+ #endif
+
+ #define THREAD_ANNOTATION_ATTRIBUTE__(x) __attribute__((x))
+
+ #define CAPABILITY(x) \
+ THREAD_ANNOTATION_ATTRIBUTE__(capability(x))
+
+ #define SCOPED_CAPABILITY \
+ THREAD_ANNOTATION_ATTRIBUTE__(scoped_lockable)
+
+ #define GUARDED_BY(x) \
+ THREAD_ANNOTATION_ATTRIBUTE__(guarded_by(x))
+
+ #define PT_GUARDED_BY(x) \
+ THREAD_ANNOTATION_ATTRIBUTE__(pt_guarded_by(x))
+
+ #define ACQUIRED_BEFORE(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(acquired_before(__VA_ARGS__))
+
+ #define ACQUIRED_AFTER(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(acquired_after(__VA_ARGS__))
+
+ #define REQUIRES(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(requires_capability(__VA_ARGS__))
+
+ #define REQUIRES_SHARED(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(requires_shared_capability(__VA_ARGS__))
+
+ #define ACQUIRE(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(acquire_capability(__VA_ARGS__))
+
+ #define ACQUIRE_SHARED(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(acquire_shared_capability(__VA_ARGS__))
+
+ #define RELEASE(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(release_capability(__VA_ARGS__))
+
+ #define RELEASE_SHARED(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(release_shared_capability(__VA_ARGS__))
+
+ #define TRY_ACQUIRE(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(try_acquire_capability(__VA_ARGS__))
+
+ #define TRY_ACQUIRE_SHARED(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(try_acquire_shared_capability(__VA_ARGS__))
+
+ #define EXCLUDES(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(locks_excluded(__VA_ARGS__))
+
+ #define ASSERT_CAPABILITY(x) \
+ THREAD_ANNOTATION_ATTRIBUTE__(assert_capability(x))
+
+ #define ASSERT_SHARED_CAPABILITY(x) \
+ THREAD_ANNOTATION_ATTRIBUTE__(assert_shared_capability(x))
+
+ #define RETURN_CAPABILITY(x) \
+ THREAD_ANNOTATION_ATTRIBUTE__(lock_returned(x))
+
+ #define NO_THREAD_SAFETY_ANALYSIS \
+ THREAD_ANNOTATION_ATTRIBUTE__(no_thread_safety_analysis)
+
+
+ // Defines an annotated interface for mutexes.
+ // These methods can be implemented to use any internal mutex implementation.
+ class CAPABILITY("mutex") Mutex {
+ public:
+ // Acquire/lock this mutex exclusively. Only one thread can have exclusive
+ // access at any one time. Write operations to guarded data require an
+ // exclusive lock.
+ void Lock() ACQUIRE();
+
+ // Acquire/lock this mutex for read operations, which require only a shared
+ // lock. This assumes a multiple-reader, single writer semantics. Multiple
+ // threads may acquire the mutex simultaneously as readers, but a writer
+ // must wait for all of them to release the mutex before it can acquire it
+ // exclusively.
+ void ReaderLock() ACQUIRE_SHARED();
+
+ // Release/unlock an exclusive mutex.
+ void Unlock() RELEASE();
+
+ // Release/unlock a shared mutex.
+ void ReaderUnlock() RELEASE_SHARED();
+
+ // Try to acquire the mutex. Returns true on success, and false on failure.
+ bool TryLock() TRY_ACQUIRE(true);
+
+ // Try to acquire the mutex for read operations.
+ bool ReaderTryLock() TRY_ACQUIRE_SHARED(true);
+
+ // Assert that this mutex is currently held by the calling thread.
+ void AssertHeld() ASSERT_CAPABILITY(this);
+
+ // Assert that is mutex is currently held for read operations.
+ void AssertReaderHeld() ASSERT_SHARED_CAPABILITY(this);
+
+ // For negative capabilities.
+ const Mutex& operator!() const { return *this; }
+ };
+
+
+ // MutexLocker is an RAII class that acquires a mutex in its constructor, and
+ // releases it in its destructor.
+ class SCOPED_CAPABILITY MutexLocker {
+ private:
+ Mutex* mut;
+
+ public:
+ MutexLocker(Mutex *mu) ACQUIRE(mu) : mut(mu) {
+ mu->Lock();
+ }
+ ~MutexLocker() RELEASE() {
+ mut->Unlock();
+ }
+ };
+
+
+ #ifdef USE_LOCK_STYLE_THREAD_SAFETY_ATTRIBUTES
+ // The original version of thread safety analysis the following attribute
+ // definitions. These use a lock-based terminology. They are still in use
+ // by existing thread safety code, and will continue to be supported.
+
+ // Deprecated.
+ #define PT_GUARDED_VAR \
+ THREAD_ANNOTATION_ATTRIBUTE__(pt_guarded)
+
+ // Deprecated.
+ #define GUARDED_VAR \
+ THREAD_ANNOTATION_ATTRIBUTE__(guarded)
+
+ // Replaced by REQUIRES
+ #define EXCLUSIVE_LOCKS_REQUIRED(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(exclusive_locks_required(__VA_ARGS__))
+
+ // Replaced by REQUIRES_SHARED
+ #define SHARED_LOCKS_REQUIRED(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(shared_locks_required(__VA_ARGS__))
+
+ // Replaced by CAPABILITY
+ #define LOCKABLE \
+ THREAD_ANNOTATION_ATTRIBUTE__(lockable)
+
+ // Replaced by SCOPED_CAPABILITY
+ #define SCOPED_LOCKABLE \
+ THREAD_ANNOTATION_ATTRIBUTE__(scoped_lockable)
+
+ // Replaced by ACQUIRE
+ #define EXCLUSIVE_LOCK_FUNCTION(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(exclusive_lock_function(__VA_ARGS__))
+
+ // Replaced by ACQUIRE_SHARED
+ #define SHARED_LOCK_FUNCTION(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(shared_lock_function(__VA_ARGS__))
+
+ // Replaced by RELEASE and RELEASE_SHARED
+ #define UNLOCK_FUNCTION(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(unlock_function(__VA_ARGS__))
+
+ // Replaced by TRY_ACQUIRE
+ #define EXCLUSIVE_TRYLOCK_FUNCTION(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(exclusive_trylock_function(__VA_ARGS__))
+
+ // Replaced by TRY_ACQUIRE_SHARED
+ #define SHARED_TRYLOCK_FUNCTION(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(shared_trylock_function(__VA_ARGS__))
+
+ // Replaced by ASSERT_CAPABILITY
+ #define ASSERT_EXCLUSIVE_LOCK(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(assert_exclusive_lock(__VA_ARGS__))
+
+ // Replaced by ASSERT_SHARED_CAPABILITY
+ #define ASSERT_SHARED_LOCK(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(assert_shared_lock(__VA_ARGS__))
+
+ // Replaced by EXCLUDE_CAPABILITY.
+ #define LOCKS_EXCLUDED(...) \
+ THREAD_ANNOTATION_ATTRIBUTE__(locks_excluded(__VA_ARGS__))
+
+ // Replaced by RETURN_CAPABILITY
+ #define LOCK_RETURNED(x) \
+ THREAD_ANNOTATION_ATTRIBUTE__(lock_returned(x))
+
+ #endif // USE_LOCK_STYLE_THREAD_SAFETY_ATTRIBUTES
+
+ #endif // THREAD_SAFETY_ANALYSIS_MUTEX_H
+
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/ThreadSanitizer.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/ThreadSanitizer.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/ThreadSanitizer.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/ThreadSanitizer.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,134 @@
+ThreadSanitizer
+===============
+
+Introduction
+------------
+
+ThreadSanitizer is a tool that detects data races. It consists of a compiler
+instrumentation module and a run-time library. Typical slowdown introduced by
+ThreadSanitizer is about **5x-15x**. Typical memory overhead introduced by
+ThreadSanitizer is about **5x-10x**.
+
+How to build
+------------
+
+Build LLVM/Clang with `CMake <http://llvm.org/docs/CMake.html>`_.
+
+Supported Platforms
+-------------------
+
+ThreadSanitizer is supported on Linux x86_64 (tested on Ubuntu 12.04).
+Support for other 64-bit architectures is possible, contributions are welcome.
+Support for 32-bit platforms is problematic and is not planned.
+
+Usage
+-----
+
+Simply compile and link your program with ``-fsanitize=thread``. To get a
+reasonable performance add ``-O1`` or higher. Use ``-g`` to get file names
+and line numbers in the warning messages.
+
+Example:
+
+.. code-block:: console
+
+ % cat projects/compiler-rt/lib/tsan/lit_tests/tiny_race.c
+ #include <pthread.h>
+ int Global;
+ void *Thread1(void *x) {
+ Global = 42;
+ return x;
+ }
+ int main() {
+ pthread_t t;
+ pthread_create(&t, NULL, Thread1, NULL);
+ Global = 43;
+ pthread_join(t, NULL);
+ return Global;
+ }
+
+ $ clang -fsanitize=thread -g -O1 tiny_race.c
+
+If a bug is detected, the program will print an error message to stderr.
+Currently, ThreadSanitizer symbolizes its output using an external
+``addr2line`` process (this will be fixed in future).
+
+.. code-block:: bash
+
+ % ./a.out
+ WARNING: ThreadSanitizer: data race (pid=19219)
+ Write of size 4 at 0x7fcf47b21bc0 by thread T1:
+ #0 Thread1 tiny_race.c:4 (exe+0x00000000a360)
+
+ Previous write of size 4 at 0x7fcf47b21bc0 by main thread:
+ #0 main tiny_race.c:10 (exe+0x00000000a3b4)
+
+ Thread T1 (running) created at:
+ #0 pthread_create tsan_interceptors.cc:705 (exe+0x00000000c790)
+ #1 main tiny_race.c:9 (exe+0x00000000a3a4)
+
+``__has_feature(thread_sanitizer)``
+------------------------------------
+
+In some cases one may need to execute different code depending on whether
+ThreadSanitizer is enabled.
+:ref:`\_\_has\_feature <langext-__has_feature-__has_extension>` can be used for
+this purpose.
+
+.. code-block:: c
+
+ #if defined(__has_feature)
+ # if __has_feature(thread_sanitizer)
+ // code that builds only under ThreadSanitizer
+ # endif
+ #endif
+
+``__attribute__((no_sanitize_thread))``
+-----------------------------------------------
+
+Some code should not be instrumented by ThreadSanitizer. One may use the
+function attribute `no_sanitize_thread` to disable instrumentation of plain
+(non-atomic) loads/stores in a particular function. ThreadSanitizer still
+instruments such functions to avoid false positives and provide meaningful stack
+traces. This attribute may not be supported by other compilers, so we suggest
+to use it together with ``__has_feature(thread_sanitizer)``.
+
+Blacklist
+---------
+
+ThreadSanitizer supports ``src`` and ``fun`` entity types in
+:doc:`SanitizerSpecialCaseList`, that can be used to suppress data race reports
+in the specified source files or functions. Unlike functions marked with
+`no_sanitize_thread` attribute, blacklisted functions are not instrumented at
+all. This can lead to false positives due to missed synchronization via atomic
+operations and missed stack frames in reports.
+
+Limitations
+-----------
+
+* ThreadSanitizer uses more real memory than a native run. At the default
+ settings the memory overhead is 5x plus 1Mb per each thread. Settings with 3x
+ (less accurate analysis) and 9x (more accurate analysis) overhead are also
+ available.
+* ThreadSanitizer maps (but does not reserve) a lot of virtual address space.
+ This means that tools like ``ulimit`` may not work as usually expected.
+* Libc/libstdc++ static linking is not supported.
+* Non-position-independent executables are not supported. Therefore, the
+ ``fsanitize=thread`` flag will cause Clang to act as though the ``-fPIE``
+ flag had been supplied if compiling without ``-fPIC``, and as though the
+ ``-pie`` flag had been supplied if linking an executable.
+
+Current Status
+--------------
+
+ThreadSanitizer is in beta stage. It is known to work on large C++ programs
+using pthreads, but we do not promise anything (yet). C++11 threading is
+supported with llvm libc++. The test suite is integrated into CMake build
+and can be run with ``make check-tsan`` command.
+
+We are actively working on enhancing the tool --- stay tuned. Any help,
+especially in the form of minimized standalone tests is more than welcome.
+
+More Information
+----------------
+`<https://github.com/google/sanitizers/wiki/ThreadSanitizerCppManual>`_
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/Tooling.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/Tooling.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/Tooling.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/Tooling.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,97 @@
+=================================================
+Choosing the Right Interface for Your Application
+=================================================
+
+Clang provides infrastructure to write tools that need syntactic and semantic
+information about a program. This document will give a short introduction of
+the different ways to write clang tools, and their pros and cons.
+
+LibClang
+--------
+
+`LibClang <http://clang.llvm.org/doxygen/group__CINDEX.html>`_ is a stable high
+level C interface to clang. When in doubt LibClang is probably the interface
+you want to use. Consider the other interfaces only when you have a good
+reason not to use LibClang.
+
+Canonical examples of when to use LibClang:
+
+* Xcode
+* Clang Python Bindings
+
+Use LibClang when you...:
+
+* want to interface with clang from other languages than C++
+* need a stable interface that takes care to be backwards compatible
+* want powerful high-level abstractions, like iterating through an AST with a
+ cursor, and don't want to learn all the nitty gritty details of Clang's AST.
+
+Do not use LibClang when you...:
+
+* want full control over the Clang AST
+
+Clang Plugins
+-------------
+
+:doc:`Clang Plugins <ClangPlugins>` allow you to run additional actions on the
+AST as part of a compilation. Plugins are dynamic libraries that are loaded at
+runtime by the compiler, and they're easy to integrate into your build
+environment.
+
+Canonical examples of when to use Clang Plugins:
+
+* special lint-style warnings or errors for your project
+* creating additional build artifacts from a single compile step
+
+Use Clang Plugins when you...:
+
+* need your tool to rerun if any of the dependencies change
+* want your tool to make or break a build
+* need full control over the Clang AST
+
+Do not use Clang Plugins when you...:
+
+* want to run tools outside of your build environment
+* want full control on how Clang is set up, including mapping of in-memory
+ virtual files
+* need to run over a specific subset of files in your project which is not
+ necessarily related to any changes which would trigger rebuilds
+
+LibTooling
+----------
+
+:doc:`LibTooling <LibTooling>` is a C++ interface aimed at writing standalone
+tools, as well as integrating into services that run clang tools. Canonical
+examples of when to use LibTooling:
+
+* a simple syntax checker
+* refactoring tools
+
+Use LibTooling when you...:
+
+* want to run tools over a single file, or a specific subset of files,
+ independently of the build system
+* want full control over the Clang AST
+* want to share code with Clang Plugins
+
+Do not use LibTooling when you...:
+
+* want to run as part of the build triggered by dependency changes
+* want a stable interface so you don't need to change your code when the AST API
+ changes
+* want high level abstractions like cursors and code completion out of the box
+* do not want to write your tools in C++
+
+:doc:`Clang tools <ClangTools>` are a collection of specific developer tools
+built on top of the LibTooling infrastructure as part of the Clang project.
+They are targeted at automating and improving core development activities of
+C/C++ developers.
+
+Examples of tools we are building or planning as part of the Clang project:
+
+* Syntax checking (:program:`clang-check`)
+* Automatic fixing of compile errors (:program:`clang-fixit`)
+* Automatic code formatting (:program:`clang-format`)
+* Migration tools for new features in new language standards
+* Core refactoring tools
+
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/UndefinedBehaviorSanitizer.txt
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_sources/UndefinedBehaviorSanitizer.txt?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/UndefinedBehaviorSanitizer.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/UndefinedBehaviorSanitizer.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,259 @@
+==========================
+UndefinedBehaviorSanitizer
+==========================
+
+.. contents::
+ :local:
+
+Introduction
+============
+
+UndefinedBehaviorSanitizer (UBSan) is a fast undefined behavior detector.
+UBSan modifies the program at compile-time to catch various kinds of undefined
+behavior during program execution, for example:
+
+* Using misaligned or null pointer
+* Signed integer overflow
+* Conversion to, from, or between floating-point types which would
+ overflow the destination
+
+See the full list of available :ref:`checks <ubsan-checks>` below.
+
+UBSan has an optional run-time library which provides better error reporting.
+The checks have small runtime cost and no impact on address space layout or ABI.
+
+How to build
+============
+
+Build LLVM/Clang with `CMake <http://llvm.org/docs/CMake.html>`_.
+
+Usage
+=====
+
+Use ``clang++`` to compile and link your program with ``-fsanitize=undefined``
+flag. Make sure to use ``clang++`` (not ``ld``) as a linker, so that your
+executable is linked with proper UBSan runtime libraries. You can use ``clang``
+instead of ``clang++`` if you're compiling/linking C code.
+
+.. code-block:: console
+
+ % cat test.cc
+ int main(int argc, char **argv) {
+ int k = 0x7fffffff;
+ k += argc;
+ return 0;
+ }
+ % clang++ -fsanitize=undefined test.cc
+ % ./a.out
+ test.cc:3:5: runtime error: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
+
+You can enable only a subset of :ref:`checks <ubsan-checks>` offered by UBSan,
+and define the desired behavior for each kind of check:
+
+* print a verbose error report and continue execution (default);
+* print a verbose error report and exit the program;
+* execute a trap instruction (doesn't require UBSan run-time support).
+
+For example if you compile/link your program as:
+
+.. code-block:: console
+
+ % clang++ -fsanitize=signed-integer-overflow,null,alignment -fno-sanitize-recover=null -fsanitize-trap=alignment
+
+the program will continue execution after signed integer overflows, exit after
+the first invalid use of a null pointer, and trap after the first use of misaligned
+pointer.
+
+.. _ubsan-checks:
+
+Availablle checks
+=================
+
+Available checks are:
+
+ - ``-fsanitize=alignment``: Use of a misaligned pointer or creation
+ of a misaligned reference.
+ - ``-fsanitize=bool``: Load of a ``bool`` value which is neither
+ ``true`` nor ``false``.
+ - ``-fsanitize=bounds``: Out of bounds array indexing, in cases
+ where the array bound can be statically determined.
+ - ``-fsanitize=enum``: Load of a value of an enumerated type which
+ is not in the range of representable values for that enumerated
+ type.
+ - ``-fsanitize=float-cast-overflow``: Conversion to, from, or
+ between floating-point types which would overflow the
+ destination.
+ - ``-fsanitize=float-divide-by-zero``: Floating point division by
+ zero.
+ - ``-fsanitize=function``: Indirect call of a function through a
+ function pointer of the wrong type (Linux, C++ and x86/x86_64 only).
+ - ``-fsanitize=integer-divide-by-zero``: Integer division by zero.
+ - ``-fsanitize=nonnull-attribute``: Passing null pointer as a function
+ parameter which is declared to never be null.
+ - ``-fsanitize=null``: Use of a null pointer or creation of a null
+ reference.
+ - ``-fsanitize=object-size``: An attempt to potentially use bytes which
+ the optimizer can determine are not part of the object being accessed.
+ This will also detect some types of undefined behavior that may not
+ directly access memory, but are provably incorrect given the size of
+ the objects involved, such as invalid downcasts and calling methods on
+ invalid pointers. These checks are made in terms of
+ ``__builtin_object_size``, and consequently may be able to detect more
+ problems at higher optimization levels.
+ - ``-fsanitize=return``: In C++, reaching the end of a
+ value-returning function without returning a value.
+ - ``-fsanitize=returns-nonnull-attribute``: Returning null pointer
+ from a function which is declared to never return null.
+ - ``-fsanitize=shift``: Shift operators where the amount shifted is
+ greater or equal to the promoted bit-width of the left hand side
+ or less than zero, or where the left hand side is negative. For a
+ signed left shift, also checks for signed overflow in C, and for
+ unsigned overflow in C++. You can use ``-fsanitize=shift-base`` or
+ ``-fsanitize=shift-exponent`` to check only left-hand side or
+ right-hand side of shift operation, respectively.
+ - ``-fsanitize=signed-integer-overflow``: Signed integer overflow,
+ including all the checks added by ``-ftrapv``, and checking for
+ overflow in signed division (``INT_MIN / -1``).
+ - ``-fsanitize=unreachable``: If control flow reaches
+ ``__builtin_unreachable``.
+ - ``-fsanitize=unsigned-integer-overflow``: Unsigned integer
+ overflows.
+ - ``-fsanitize=vla-bound``: A variable-length array whose bound
+ does not evaluate to a positive value.
+ - ``-fsanitize=vptr``: Use of an object whose vptr indicates that
+ it is of the wrong dynamic type, or that its lifetime has not
+ begun or has ended. Incompatible with ``-fno-rtti``. Link must
+ be performed by ``clang++``, not ``clang``, to make sure C++-specific
+ parts of the runtime library and C++ standard libraries are present.
+
+You can also use the following check groups:
+ - ``-fsanitize=undefined``: All of the checks listed above other than
+ ``unsigned-integer-overflow``.
+ - ``-fsanitize=undefined-trap``: Deprecated alias of
+ ``-fsanitize=undefined``.
+ - ``-fsanitize=integer``: Checks for undefined or suspicious integer
+ behavior (e.g. unsigned integer overflow).
+
+Stack traces and report symbolization
+=====================================
+If you want UBSan to print symbolized stack trace for each error report, you
+will need to:
+
+#. Compile with ``-g`` and ``-fno-omit-frame-pointer`` to get proper debug
+ information in your binary.
+#. Run your program with environment variable
+ ``UBSAN_OPTIONS=print_stacktrace=1``.
+#. Make sure ``llvm-symbolizer`` binary is in ``PATH``.
+
+Issue Suppression
+=================
+
+UndefinedBehaviorSanitizer is not expected to produce false positives.
+If you see one, look again; most likely it is a true positive!
+
+Disabling Instrumentation with ``__attribute__((no_sanitize("undefined")))``
+----------------------------------------------------------------------------
+
+You disable UBSan checks for particular functions with
+``__attribute__((no_sanitize("undefined")))``. You can use all values of
+``-fsanitize=`` flag in this attribute, e.g. if your function deliberately
+contains possible signed integer overflow, you can use
+``__attribute__((no_sanitize("signed-integer-overflow")))``.
+
+This attribute may not be
+supported by other compilers, so consider using it together with
+``#if defined(__clang__)``.
+
+Suppressing Errors in Recompiled Code (Blacklist)
+-------------------------------------------------
+
+UndefinedBehaviorSanitizer supports ``src`` and ``fun`` entity types in
+:doc:`SanitizerSpecialCaseList`, that can be used to suppress error reports
+in the specified source files or functions.
+
+Runtime suppressions
+--------------------
+
+Sometimes you can suppress UBSan error reports for specific files, functions,
+or libraries without recompiling the code. You need to pass a path to
+suppression file in a ``UBSAN_OPTIONS`` environment variable.
+
+.. code-block:: bash
+
+ UBSAN_OPTIONS=suppressions=MyUBSan.supp
+
+You need to specify a :ref:`check <ubsan-checks>` you are suppressing and the
+bug location. For example:
+
+.. code-block:: bash
+
+ signed-integer-overflow:file-with-known-overflow.cpp
+ alignment:function_doing_unaligned_access
+ vptr:shared_object_with_vptr_failures.so
+
+There are several limitations:
+
+* Sometimes your binary must have enough debug info and/or symbol table, so
+ that the runtime could figure out source file or function name to match
+ against the suppression.
+* It is only possible to suppress recoverable checks. For the example above,
+ you can additionally pass
+ ``-fsanitize-recover=signed-integer-overflow,alignment,vptr``, although
+ most of UBSan checks are recoverable by default.
+* Check groups (like ``undefined``) can't be used in suppressions file, only
+ fine-grained checks are supported.
+
+Supported Platforms
+===================
+
+UndefinedBehaviorSanitizer is supported on the following OS:
+
+* Android
+* Linux
+* FreeBSD
+* OS X 10.6 onwards
+
+and for the following architectures:
+
+* i386/x86\_64
+* ARM
+* AArch64
+* PowerPC64
+* MIPS/MIPS64
+
+Current Status
+==============
+
+UndefinedBehaviorSanitizer is available on selected platforms starting from LLVM
+3.3. The test suite is integrated into the CMake build and can be run with
+``check-ubsan`` command.
+
+Additional Configuration
+========================
+
+UndefinedBehaviorSanitizer adds static check data for each check unless it is
+in trap mode. This check data includes the full file name. The option
+``-fsanitize-undefined-strip-path-components=N`` can be used to trim this
+information. If ``N`` is positive, file information emitted by
+UndefinedBehaviorSanitizer will drop the first ``N`` components from the file
+path. If ``N`` is negative, the last ``N`` components will be kept.
+
+Example
+-------
+
+For a file called ``/code/library/file.cpp``, here is what would be emitted:
+* Default (No flag, or ``-fsanitize-undefined-strip-path-components=0``): ``/code/library/file.cpp``
+* ``-fsanitize-undefined-strip-path-components=1``: ``code/library/file.cpp``
+* ``-fsanitize-undefined-strip-path-components=2``: ``library/file.cpp``
+* ``-fsanitize-undefined-strip-path-components=-1``: ``file.cpp``
+* ``-fsanitize-undefined-strip-path-components=-2``: ``library/file.cpp``
+
+More Information
+================
+
+* From LLVM project blog:
+ `What Every C Programmer Should Know About Undefined Behavior
+ <http://blog.llvm.org/2011/05/what-every-c-programmer-should-know.html>`_
+* From John Regehr's *Embedded in Academia* blog:
+ `A Guide to Undefined Behavior in C and C++
+ <http://blog.regehr.org/archives/213>`_
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/UsersManual.txt
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==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/UsersManual.txt (added)
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@@ -0,0 +1,2216 @@
+============================
+Clang Compiler User's Manual
+============================
+
+.. contents::
+ :local:
+
+Introduction
+============
+
+The Clang Compiler is an open-source compiler for the C family of
+programming languages, aiming to be the best in class implementation of
+these languages. Clang builds on the LLVM optimizer and code generator,
+allowing it to provide high-quality optimization and code generation
+support for many targets. For more general information, please see the
+`Clang Web Site <http://clang.llvm.org>`_ or the `LLVM Web
+Site <http://llvm.org>`_.
+
+This document describes important notes about using Clang as a compiler
+for an end-user, documenting the supported features, command line
+options, etc. If you are interested in using Clang to build a tool that
+processes code, please see :doc:`InternalsManual`. If you are interested in the
+`Clang Static Analyzer <http://clang-analyzer.llvm.org>`_, please see its web
+page.
+
+Clang is designed to support the C family of programming languages,
+which includes :ref:`C <c>`, :ref:`Objective-C <objc>`, :ref:`C++ <cxx>`, and
+:ref:`Objective-C++ <objcxx>` as well as many dialects of those. For
+language-specific information, please see the corresponding language
+specific section:
+
+- :ref:`C Language <c>`: K&R C, ANSI C89, ISO C90, ISO C94 (C89+AMD1), ISO
+ C99 (+TC1, TC2, TC3).
+- :ref:`Objective-C Language <objc>`: ObjC 1, ObjC 2, ObjC 2.1, plus
+ variants depending on base language.
+- :ref:`C++ Language <cxx>`
+- :ref:`Objective C++ Language <objcxx>`
+
+In addition to these base languages and their dialects, Clang supports a
+broad variety of language extensions, which are documented in the
+corresponding language section. These extensions are provided to be
+compatible with the GCC, Microsoft, and other popular compilers as well
+as to improve functionality through Clang-specific features. The Clang
+driver and language features are intentionally designed to be as
+compatible with the GNU GCC compiler as reasonably possible, easing
+migration from GCC to Clang. In most cases, code "just works".
+Clang also provides an alternative driver, :ref:`clang-cl`, that is designed
+to be compatible with the Visual C++ compiler, cl.exe.
+
+In addition to language specific features, Clang has a variety of
+features that depend on what CPU architecture or operating system is
+being compiled for. Please see the :ref:`Target-Specific Features and
+Limitations <target_features>` section for more details.
+
+The rest of the introduction introduces some basic :ref:`compiler
+terminology <terminology>` that is used throughout this manual and
+contains a basic :ref:`introduction to using Clang <basicusage>` as a
+command line compiler.
+
+.. _terminology:
+
+Terminology
+-----------
+
+Front end, parser, backend, preprocessor, undefined behavior,
+diagnostic, optimizer
+
+.. _basicusage:
+
+Basic Usage
+-----------
+
+Intro to how to use a C compiler for newbies.
+
+compile + link compile then link debug info enabling optimizations
+picking a language to use, defaults to C11 by default. Autosenses based
+on extension. using a makefile
+
+Command Line Options
+====================
+
+This section is generally an index into other sections. It does not go
+into depth on the ones that are covered by other sections. However, the
+first part introduces the language selection and other high level
+options like :option:`-c`, :option:`-g`, etc.
+
+Options to Control Error and Warning Messages
+---------------------------------------------
+
+.. option:: -Werror
+
+ Turn warnings into errors.
+
+.. This is in plain monospaced font because it generates the same label as
+.. -Werror, and Sphinx complains.
+
+``-Werror=foo``
+
+ Turn warning "foo" into an error.
+
+.. option:: -Wno-error=foo
+
+ Turn warning "foo" into an warning even if :option:`-Werror` is specified.
+
+.. option:: -Wfoo
+
+ Enable warning "foo".
+
+.. option:: -Wno-foo
+
+ Disable warning "foo".
+
+.. option:: -w
+
+ Disable all diagnostics.
+
+.. option:: -Weverything
+
+ :ref:`Enable all diagnostics. <diagnostics_enable_everything>`
+
+.. option:: -pedantic
+
+ Warn on language extensions.
+
+.. option:: -pedantic-errors
+
+ Error on language extensions.
+
+.. option:: -Wsystem-headers
+
+ Enable warnings from system headers.
+
+.. option:: -ferror-limit=123
+
+ Stop emitting diagnostics after 123 errors have been produced. The default is
+ 20, and the error limit can be disabled with `-ferror-limit=0`.
+
+.. option:: -ftemplate-backtrace-limit=123
+
+ Only emit up to 123 template instantiation notes within the template
+ instantiation backtrace for a single warning or error. The default is 10, and
+ the limit can be disabled with `-ftemplate-backtrace-limit=0`.
+
+.. _cl_diag_formatting:
+
+Formatting of Diagnostics
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Clang aims to produce beautiful diagnostics by default, particularly for
+new users that first come to Clang. However, different people have
+different preferences, and sometimes Clang is driven not by a human,
+but by a program that wants consistent and easily parsable output. For
+these cases, Clang provides a wide range of options to control the exact
+output format of the diagnostics that it generates.
+
+.. _opt_fshow-column:
+
+**-f[no-]show-column**
+ Print column number in diagnostic.
+
+ This option, which defaults to on, controls whether or not Clang
+ prints the column number of a diagnostic. For example, when this is
+ enabled, Clang will print something like:
+
+ ::
+
+ test.c:28:8: warning: extra tokens at end of #endif directive [-Wextra-tokens]
+ #endif bad
+ ^
+ //
+
+ When this is disabled, Clang will print "test.c:28: warning..." with
+ no column number.
+
+ The printed column numbers count bytes from the beginning of the
+ line; take care if your source contains multibyte characters.
+
+.. _opt_fshow-source-location:
+
+**-f[no-]show-source-location**
+ Print source file/line/column information in diagnostic.
+
+ This option, which defaults to on, controls whether or not Clang
+ prints the filename, line number and column number of a diagnostic.
+ For example, when this is enabled, Clang will print something like:
+
+ ::
+
+ test.c:28:8: warning: extra tokens at end of #endif directive [-Wextra-tokens]
+ #endif bad
+ ^
+ //
+
+ When this is disabled, Clang will not print the "test.c:28:8: "
+ part.
+
+.. _opt_fcaret-diagnostics:
+
+**-f[no-]caret-diagnostics**
+ Print source line and ranges from source code in diagnostic.
+ This option, which defaults to on, controls whether or not Clang
+ prints the source line, source ranges, and caret when emitting a
+ diagnostic. For example, when this is enabled, Clang will print
+ something like:
+
+ ::
+
+ test.c:28:8: warning: extra tokens at end of #endif directive [-Wextra-tokens]
+ #endif bad
+ ^
+ //
+
+**-f[no-]color-diagnostics**
+ This option, which defaults to on when a color-capable terminal is
+ detected, controls whether or not Clang prints diagnostics in color.
+
+ When this option is enabled, Clang will use colors to highlight
+ specific parts of the diagnostic, e.g.,
+
+ .. nasty hack to not lose our dignity
+
+ .. raw:: html
+
+ <pre>
+ <b><span style="color:black">test.c:28:8: <span style="color:magenta">warning</span>: extra tokens at end of #endif directive [-Wextra-tokens]</span></b>
+ #endif bad
+ <span style="color:green">^</span>
+ <span style="color:green">//</span>
+ </pre>
+
+ When this is disabled, Clang will just print:
+
+ ::
+
+ test.c:2:8: warning: extra tokens at end of #endif directive [-Wextra-tokens]
+ #endif bad
+ ^
+ //
+
+**-fansi-escape-codes**
+ Controls whether ANSI escape codes are used instead of the Windows Console
+ API to output colored diagnostics. This option is only used on Windows and
+ defaults to off.
+
+.. option:: -fdiagnostics-format=clang/msvc/vi
+
+ Changes diagnostic output format to better match IDEs and command line tools.
+
+ This option controls the output format of the filename, line number,
+ and column printed in diagnostic messages. The options, and their
+ affect on formatting a simple conversion diagnostic, follow:
+
+ **clang** (default)
+ ::
+
+ t.c:3:11: warning: conversion specifies type 'char *' but the argument has type 'int'
+
+ **msvc**
+ ::
+
+ t.c(3,11) : warning: conversion specifies type 'char *' but the argument has type 'int'
+
+ **vi**
+ ::
+
+ t.c +3:11: warning: conversion specifies type 'char *' but the argument has type 'int'
+
+.. _opt_fdiagnostics-show-option:
+
+**-f[no-]diagnostics-show-option**
+ Enable ``[-Woption]`` information in diagnostic line.
+
+ This option, which defaults to on, controls whether or not Clang
+ prints the associated :ref:`warning group <cl_diag_warning_groups>`
+ option name when outputting a warning diagnostic. For example, in
+ this output:
+
+ ::
+
+ test.c:28:8: warning: extra tokens at end of #endif directive [-Wextra-tokens]
+ #endif bad
+ ^
+ //
+
+ Passing **-fno-diagnostics-show-option** will prevent Clang from
+ printing the [:ref:`-Wextra-tokens <opt_Wextra-tokens>`] information in
+ the diagnostic. This information tells you the flag needed to enable
+ or disable the diagnostic, either from the command line or through
+ :ref:`#pragma GCC diagnostic <pragma_GCC_diagnostic>`.
+
+.. _opt_fdiagnostics-show-category:
+
+.. option:: -fdiagnostics-show-category=none/id/name
+
+ Enable printing category information in diagnostic line.
+
+ This option, which defaults to "none", controls whether or not Clang
+ prints the category associated with a diagnostic when emitting it.
+ Each diagnostic may or many not have an associated category, if it
+ has one, it is listed in the diagnostic categorization field of the
+ diagnostic line (in the []'s).
+
+ For example, a format string warning will produce these three
+ renditions based on the setting of this option:
+
+ ::
+
+ t.c:3:11: warning: conversion specifies type 'char *' but the argument has type 'int' [-Wformat]
+ t.c:3:11: warning: conversion specifies type 'char *' but the argument has type 'int' [-Wformat,1]
+ t.c:3:11: warning: conversion specifies type 'char *' but the argument has type 'int' [-Wformat,Format String]
+
+ This category can be used by clients that want to group diagnostics
+ by category, so it should be a high level category. We want dozens
+ of these, not hundreds or thousands of them.
+
+.. _opt_fdiagnostics-fixit-info:
+
+**-f[no-]diagnostics-fixit-info**
+ Enable "FixIt" information in the diagnostics output.
+
+ This option, which defaults to on, controls whether or not Clang
+ prints the information on how to fix a specific diagnostic
+ underneath it when it knows. For example, in this output:
+
+ ::
+
+ test.c:28:8: warning: extra tokens at end of #endif directive [-Wextra-tokens]
+ #endif bad
+ ^
+ //
+
+ Passing **-fno-diagnostics-fixit-info** will prevent Clang from
+ printing the "//" line at the end of the message. This information
+ is useful for users who may not understand what is wrong, but can be
+ confusing for machine parsing.
+
+.. _opt_fdiagnostics-print-source-range-info:
+
+**-fdiagnostics-print-source-range-info**
+ Print machine parsable information about source ranges.
+ This option makes Clang print information about source ranges in a machine
+ parsable format after the file/line/column number information. The
+ information is a simple sequence of brace enclosed ranges, where each range
+ lists the start and end line/column locations. For example, in this output:
+
+ ::
+
+ exprs.c:47:15:{47:8-47:14}{47:17-47:24}: error: invalid operands to binary expression ('int *' and '_Complex float')
+ P = (P-42) + Gamma*4;
+ ~~~~~~ ^ ~~~~~~~
+
+ The {}'s are generated by -fdiagnostics-print-source-range-info.
+
+ The printed column numbers count bytes from the beginning of the
+ line; take care if your source contains multibyte characters.
+
+.. option:: -fdiagnostics-parseable-fixits
+
+ Print Fix-Its in a machine parseable form.
+
+ This option makes Clang print available Fix-Its in a machine
+ parseable format at the end of diagnostics. The following example
+ illustrates the format:
+
+ ::
+
+ fix-it:"t.cpp":{7:25-7:29}:"Gamma"
+
+ The range printed is a half-open range, so in this example the
+ characters at column 25 up to but not including column 29 on line 7
+ in t.cpp should be replaced with the string "Gamma". Either the
+ range or the replacement string may be empty (representing strict
+ insertions and strict erasures, respectively). Both the file name
+ and the insertion string escape backslash (as "\\\\"), tabs (as
+ "\\t"), newlines (as "\\n"), double quotes(as "\\"") and
+ non-printable characters (as octal "\\xxx").
+
+ The printed column numbers count bytes from the beginning of the
+ line; take care if your source contains multibyte characters.
+
+.. option:: -fno-elide-type
+
+ Turns off elision in template type printing.
+
+ The default for template type printing is to elide as many template
+ arguments as possible, removing those which are the same in both
+ template types, leaving only the differences. Adding this flag will
+ print all the template arguments. If supported by the terminal,
+ highlighting will still appear on differing arguments.
+
+ Default:
+
+ ::
+
+ t.cc:4:5: note: candidate function not viable: no known conversion from 'vector<map<[...], map<float, [...]>>>' to 'vector<map<[...], map<double, [...]>>>' for 1st argument;
+
+ -fno-elide-type:
+
+ ::
+
+ t.cc:4:5: note: candidate function not viable: no known conversion from 'vector<map<int, map<float, int>>>' to 'vector<map<int, map<double, int>>>' for 1st argument;
+
+.. option:: -fdiagnostics-show-template-tree
+
+ Template type diffing prints a text tree.
+
+ For diffing large templated types, this option will cause Clang to
+ display the templates as an indented text tree, one argument per
+ line, with differences marked inline. This is compatible with
+ -fno-elide-type.
+
+ Default:
+
+ ::
+
+ t.cc:4:5: note: candidate function not viable: no known conversion from 'vector<map<[...], map<float, [...]>>>' to 'vector<map<[...], map<double, [...]>>>' for 1st argument;
+
+ With :option:`-fdiagnostics-show-template-tree`:
+
+ ::
+
+ t.cc:4:5: note: candidate function not viable: no known conversion for 1st argument;
+ vector<
+ map<
+ [...],
+ map<
+ [float != double],
+ [...]>>>
+
+.. _cl_diag_warning_groups:
+
+Individual Warning Groups
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+TODO: Generate this from tblgen. Define one anchor per warning group.
+
+.. _opt_wextra-tokens:
+
+.. option:: -Wextra-tokens
+
+ Warn about excess tokens at the end of a preprocessor directive.
+
+ This option, which defaults to on, enables warnings about extra
+ tokens at the end of preprocessor directives. For example:
+
+ ::
+
+ test.c:28:8: warning: extra tokens at end of #endif directive [-Wextra-tokens]
+ #endif bad
+ ^
+
+ These extra tokens are not strictly conforming, and are usually best
+ handled by commenting them out.
+
+.. option:: -Wambiguous-member-template
+
+ Warn about unqualified uses of a member template whose name resolves to
+ another template at the location of the use.
+
+ This option, which defaults to on, enables a warning in the
+ following code:
+
+ ::
+
+ template<typename T> struct set{};
+ template<typename T> struct trait { typedef const T& type; };
+ struct Value {
+ template<typename T> void set(typename trait<T>::type value) {}
+ };
+ void foo() {
+ Value v;
+ v.set<double>(3.2);
+ }
+
+ C++ [basic.lookup.classref] requires this to be an error, but,
+ because it's hard to work around, Clang downgrades it to a warning
+ as an extension.
+
+.. option:: -Wbind-to-temporary-copy
+
+ Warn about an unusable copy constructor when binding a reference to a
+ temporary.
+
+ This option enables warnings about binding a
+ reference to a temporary when the temporary doesn't have a usable
+ copy constructor. For example:
+
+ ::
+
+ struct NonCopyable {
+ NonCopyable();
+ private:
+ NonCopyable(const NonCopyable&);
+ };
+ void foo(const NonCopyable&);
+ void bar() {
+ foo(NonCopyable()); // Disallowed in C++98; allowed in C++11.
+ }
+
+ ::
+
+ struct NonCopyable2 {
+ NonCopyable2();
+ NonCopyable2(NonCopyable2&);
+ };
+ void foo(const NonCopyable2&);
+ void bar() {
+ foo(NonCopyable2()); // Disallowed in C++98; allowed in C++11.
+ }
+
+ Note that if ``NonCopyable2::NonCopyable2()`` has a default argument
+ whose instantiation produces a compile error, that error will still
+ be a hard error in C++98 mode even if this warning is turned off.
+
+Options to Control Clang Crash Diagnostics
+------------------------------------------
+
+As unbelievable as it may sound, Clang does crash from time to time.
+Generally, this only occurs to those living on the `bleeding
+edge <http://llvm.org/releases/download.html#svn>`_. Clang goes to great
+lengths to assist you in filing a bug report. Specifically, Clang
+generates preprocessed source file(s) and associated run script(s) upon
+a crash. These files should be attached to a bug report to ease
+reproducibility of the failure. Below are the command line options to
+control the crash diagnostics.
+
+.. option:: -fno-crash-diagnostics
+
+ Disable auto-generation of preprocessed source files during a clang crash.
+
+The -fno-crash-diagnostics flag can be helpful for speeding the process
+of generating a delta reduced test case.
+
+Options to Emit Optimization Reports
+------------------------------------
+
+Optimization reports trace, at a high-level, all the major decisions
+done by compiler transformations. For instance, when the inliner
+decides to inline function ``foo()`` into ``bar()``, or the loop unroller
+decides to unroll a loop N times, or the vectorizer decides to
+vectorize a loop body.
+
+Clang offers a family of flags which the optimizers can use to emit
+a diagnostic in three cases:
+
+1. When the pass makes a transformation (`-Rpass`).
+
+2. When the pass fails to make a transformation (`-Rpass-missed`).
+
+3. When the pass determines whether or not to make a transformation
+ (`-Rpass-analysis`).
+
+NOTE: Although the discussion below focuses on `-Rpass`, the exact
+same options apply to `-Rpass-missed` and `-Rpass-analysis`.
+
+Since there are dozens of passes inside the compiler, each of these flags
+take a regular expression that identifies the name of the pass which should
+emit the associated diagnostic. For example, to get a report from the inliner,
+compile the code with:
+
+.. code-block:: console
+
+ $ clang -O2 -Rpass=inline code.cc -o code
+ code.cc:4:25: remark: foo inlined into bar [-Rpass=inline]
+ int bar(int j) { return foo(j, j - 2); }
+ ^
+
+Note that remarks from the inliner are identified with `[-Rpass=inline]`.
+To request a report from every optimization pass, you should use
+`-Rpass=.*` (in fact, you can use any valid POSIX regular
+expression). However, do not expect a report from every transformation
+made by the compiler. Optimization remarks do not really make sense
+outside of the major transformations (e.g., inlining, vectorization,
+loop optimizations) and not every optimization pass supports this
+feature.
+
+Current limitations
+^^^^^^^^^^^^^^^^^^^
+
+1. Optimization remarks that refer to function names will display the
+ mangled name of the function. Since these remarks are emitted by the
+ back end of the compiler, it does not know anything about the input
+ language, nor its mangling rules.
+
+2. Some source locations are not displayed correctly. The front end has
+ a more detailed source location tracking than the locations included
+ in the debug info (e.g., the front end can locate code inside macro
+ expansions). However, the locations used by `-Rpass` are
+ translated from debug annotations. That translation can be lossy,
+ which results in some remarks having no location information.
+
+Other Options
+-------------
+Clang options that that don't fit neatly into other categories.
+
+.. option:: -MV
+
+ When emitting a dependency file, use formatting conventions appropriate
+ for NMake or Jom. Ignored unless another option causes Clang to emit a
+ dependency file.
+
+When Clang emits a dependency file (e.g., you supplied the -M option)
+most filenames can be written to the file without any special formatting.
+Different Make tools will treat different sets of characters as "special"
+and use different conventions for telling the Make tool that the character
+is actually part of the filename. Normally Clang uses backslash to "escape"
+a special character, which is the convention used by GNU Make. The -MV
+option tells Clang to put double-quotes around the entire filename, which
+is the convention used by NMake and Jom.
+
+
+Language and Target-Independent Features
+========================================
+
+Controlling Errors and Warnings
+-------------------------------
+
+Clang provides a number of ways to control which code constructs cause
+it to emit errors and warning messages, and how they are displayed to
+the console.
+
+Controlling How Clang Displays Diagnostics
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+When Clang emits a diagnostic, it includes rich information in the
+output, and gives you fine-grain control over which information is
+printed. Clang has the ability to print this information, and these are
+the options that control it:
+
+#. A file/line/column indicator that shows exactly where the diagnostic
+ occurs in your code [:ref:`-fshow-column <opt_fshow-column>`,
+ :ref:`-fshow-source-location <opt_fshow-source-location>`].
+#. A categorization of the diagnostic as a note, warning, error, or
+ fatal error.
+#. A text string that describes what the problem is.
+#. An option that indicates how to control the diagnostic (for
+ diagnostics that support it)
+ [:ref:`-fdiagnostics-show-option <opt_fdiagnostics-show-option>`].
+#. A :ref:`high-level category <diagnostics_categories>` for the diagnostic
+ for clients that want to group diagnostics by class (for diagnostics
+ that support it)
+ [:ref:`-fdiagnostics-show-category <opt_fdiagnostics-show-category>`].
+#. The line of source code that the issue occurs on, along with a caret
+ and ranges that indicate the important locations
+ [:ref:`-fcaret-diagnostics <opt_fcaret-diagnostics>`].
+#. "FixIt" information, which is a concise explanation of how to fix the
+ problem (when Clang is certain it knows)
+ [:ref:`-fdiagnostics-fixit-info <opt_fdiagnostics-fixit-info>`].
+#. A machine-parsable representation of the ranges involved (off by
+ default)
+ [:ref:`-fdiagnostics-print-source-range-info <opt_fdiagnostics-print-source-range-info>`].
+
+For more information please see :ref:`Formatting of
+Diagnostics <cl_diag_formatting>`.
+
+Diagnostic Mappings
+^^^^^^^^^^^^^^^^^^^
+
+All diagnostics are mapped into one of these 6 classes:
+
+- Ignored
+- Note
+- Remark
+- Warning
+- Error
+- Fatal
+
+.. _diagnostics_categories:
+
+Diagnostic Categories
+^^^^^^^^^^^^^^^^^^^^^
+
+Though not shown by default, diagnostics may each be associated with a
+high-level category. This category is intended to make it possible to
+triage builds that produce a large number of errors or warnings in a
+grouped way.
+
+Categories are not shown by default, but they can be turned on with the
+:ref:`-fdiagnostics-show-category <opt_fdiagnostics-show-category>` option.
+When set to "``name``", the category is printed textually in the
+diagnostic output. When it is set to "``id``", a category number is
+printed. The mapping of category names to category id's can be obtained
+by running '``clang --print-diagnostic-categories``'.
+
+Controlling Diagnostics via Command Line Flags
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+TODO: -W flags, -pedantic, etc
+
+.. _pragma_gcc_diagnostic:
+
+Controlling Diagnostics via Pragmas
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Clang can also control what diagnostics are enabled through the use of
+pragmas in the source code. This is useful for turning off specific
+warnings in a section of source code. Clang supports GCC's pragma for
+compatibility with existing source code, as well as several extensions.
+
+The pragma may control any warning that can be used from the command
+line. Warnings may be set to ignored, warning, error, or fatal. The
+following example code will tell Clang or GCC to ignore the -Wall
+warnings:
+
+.. code-block:: c
+
+ #pragma GCC diagnostic ignored "-Wall"
+
+In addition to all of the functionality provided by GCC's pragma, Clang
+also allows you to push and pop the current warning state. This is
+particularly useful when writing a header file that will be compiled by
+other people, because you don't know what warning flags they build with.
+
+In the below example :option:`-Wextra-tokens` is ignored for only a single line
+of code, after which the diagnostics return to whatever state had previously
+existed.
+
+.. code-block:: c
+
+ #if foo
+ #endif foo // warning: extra tokens at end of #endif directive
+
+ #pragma clang diagnostic ignored "-Wextra-tokens"
+
+ #if foo
+ #endif foo // no warning
+
+ #pragma clang diagnostic pop
+
+The push and pop pragmas will save and restore the full diagnostic state
+of the compiler, regardless of how it was set. That means that it is
+possible to use push and pop around GCC compatible diagnostics and Clang
+will push and pop them appropriately, while GCC will ignore the pushes
+and pops as unknown pragmas. It should be noted that while Clang
+supports the GCC pragma, Clang and GCC do not support the exact same set
+of warnings, so even when using GCC compatible #pragmas there is no
+guarantee that they will have identical behaviour on both compilers.
+
+In addition to controlling warnings and errors generated by the compiler, it is
+possible to generate custom warning and error messages through the following
+pragmas:
+
+.. code-block:: c
+
+ // The following will produce warning messages
+ #pragma message "some diagnostic message"
+ #pragma GCC warning "TODO: replace deprecated feature"
+
+ // The following will produce an error message
+ #pragma GCC error "Not supported"
+
+These pragmas operate similarly to the ``#warning`` and ``#error`` preprocessor
+directives, except that they may also be embedded into preprocessor macros via
+the C99 ``_Pragma`` operator, for example:
+
+.. code-block:: c
+
+ #define STR(X) #X
+ #define DEFER(M,...) M(__VA_ARGS__)
+ #define CUSTOM_ERROR(X) _Pragma(STR(GCC error(X " at line " DEFER(STR,__LINE__))))
+
+ CUSTOM_ERROR("Feature not available");
+
+Controlling Diagnostics in System Headers
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Warnings are suppressed when they occur in system headers. By default,
+an included file is treated as a system header if it is found in an
+include path specified by ``-isystem``, but this can be overridden in
+several ways.
+
+The ``system_header`` pragma can be used to mark the current file as
+being a system header. No warnings will be produced from the location of
+the pragma onwards within the same file.
+
+.. code-block:: c
+
+ #if foo
+ #endif foo // warning: extra tokens at end of #endif directive
+
+ #pragma clang system_header
+
+ #if foo
+ #endif foo // no warning
+
+The `--system-header-prefix=` and `--no-system-header-prefix=`
+command-line arguments can be used to override whether subsets of an include
+path are treated as system headers. When the name in a ``#include`` directive
+is found within a header search path and starts with a system prefix, the
+header is treated as a system header. The last prefix on the
+command-line which matches the specified header name takes precedence.
+For instance:
+
+.. code-block:: console
+
+ $ clang -Ifoo -isystem bar --system-header-prefix=x/ \
+ --no-system-header-prefix=x/y/
+
+Here, ``#include "x/a.h"`` is treated as including a system header, even
+if the header is found in ``foo``, and ``#include "x/y/b.h"`` is treated
+as not including a system header, even if the header is found in
+``bar``.
+
+A ``#include`` directive which finds a file relative to the current
+directory is treated as including a system header if the including file
+is treated as a system header.
+
+.. _diagnostics_enable_everything:
+
+Enabling All Diagnostics
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+In addition to the traditional ``-W`` flags, one can enable **all**
+diagnostics by passing :option:`-Weverything`. This works as expected
+with
+:option:`-Werror`, and also includes the warnings from :option:`-pedantic`.
+
+Note that when combined with :option:`-w` (which disables all warnings), that
+flag wins.
+
+Controlling Static Analyzer Diagnostics
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+While not strictly part of the compiler, the diagnostics from Clang's
+`static analyzer <http://clang-analyzer.llvm.org>`_ can also be
+influenced by the user via changes to the source code. See the available
+`annotations <http://clang-analyzer.llvm.org/annotations.html>`_ and the
+analyzer's `FAQ
+page <http://clang-analyzer.llvm.org/faq.html#exclude_code>`_ for more
+information.
+
+.. _usersmanual-precompiled-headers:
+
+Precompiled Headers
+-------------------
+
+`Precompiled headers <http://en.wikipedia.org/wiki/Precompiled_header>`__
+are a general approach employed by many compilers to reduce compilation
+time. The underlying motivation of the approach is that it is common for
+the same (and often large) header files to be included by multiple
+source files. Consequently, compile times can often be greatly improved
+by caching some of the (redundant) work done by a compiler to process
+headers. Precompiled header files, which represent one of many ways to
+implement this optimization, are literally files that represent an
+on-disk cache that contains the vital information necessary to reduce
+some of the work needed to process a corresponding header file. While
+details of precompiled headers vary between compilers, precompiled
+headers have been shown to be highly effective at speeding up program
+compilation on systems with very large system headers (e.g., Mac OS X).
+
+Generating a PCH File
+^^^^^^^^^^^^^^^^^^^^^
+
+To generate a PCH file using Clang, one invokes Clang with the
+`-x <language>-header` option. This mirrors the interface in GCC
+for generating PCH files:
+
+.. code-block:: console
+
+ $ gcc -x c-header test.h -o test.h.gch
+ $ clang -x c-header test.h -o test.h.pch
+
+Using a PCH File
+^^^^^^^^^^^^^^^^
+
+A PCH file can then be used as a prefix header when a :option:`-include`
+option is passed to ``clang``:
+
+.. code-block:: console
+
+ $ clang -include test.h test.c -o test
+
+The ``clang`` driver will first check if a PCH file for ``test.h`` is
+available; if so, the contents of ``test.h`` (and the files it includes)
+will be processed from the PCH file. Otherwise, Clang falls back to
+directly processing the content of ``test.h``. This mirrors the behavior
+of GCC.
+
+.. note::
+
+ Clang does *not* automatically use PCH files for headers that are directly
+ included within a source file. For example:
+
+ .. code-block:: console
+
+ $ clang -x c-header test.h -o test.h.pch
+ $ cat test.c
+ #include "test.h"
+ $ clang test.c -o test
+
+ In this example, ``clang`` will not automatically use the PCH file for
+ ``test.h`` since ``test.h`` was included directly in the source file and not
+ specified on the command line using :option:`-include`.
+
+Relocatable PCH Files
+^^^^^^^^^^^^^^^^^^^^^
+
+It is sometimes necessary to build a precompiled header from headers
+that are not yet in their final, installed locations. For example, one
+might build a precompiled header within the build tree that is then
+meant to be installed alongside the headers. Clang permits the creation
+of "relocatable" precompiled headers, which are built with a given path
+(into the build directory) and can later be used from an installed
+location.
+
+To build a relocatable precompiled header, place your headers into a
+subdirectory whose structure mimics the installed location. For example,
+if you want to build a precompiled header for the header ``mylib.h``
+that will be installed into ``/usr/include``, create a subdirectory
+``build/usr/include`` and place the header ``mylib.h`` into that
+subdirectory. If ``mylib.h`` depends on other headers, then they can be
+stored within ``build/usr/include`` in a way that mimics the installed
+location.
+
+Building a relocatable precompiled header requires two additional
+arguments. First, pass the ``--relocatable-pch`` flag to indicate that
+the resulting PCH file should be relocatable. Second, pass
+`-isysroot /path/to/build`, which makes all includes for your library
+relative to the build directory. For example:
+
+.. code-block:: console
+
+ # clang -x c-header --relocatable-pch -isysroot /path/to/build /path/to/build/mylib.h mylib.h.pch
+
+When loading the relocatable PCH file, the various headers used in the
+PCH file are found from the system header root. For example, ``mylib.h``
+can be found in ``/usr/include/mylib.h``. If the headers are installed
+in some other system root, the `-isysroot` option can be used provide
+a different system root from which the headers will be based. For
+example, `-isysroot /Developer/SDKs/MacOSX10.4u.sdk` will look for
+``mylib.h`` in ``/Developer/SDKs/MacOSX10.4u.sdk/usr/include/mylib.h``.
+
+Relocatable precompiled headers are intended to be used in a limited
+number of cases where the compilation environment is tightly controlled
+and the precompiled header cannot be generated after headers have been
+installed.
+
+.. _controlling-code-generation:
+
+Controlling Code Generation
+---------------------------
+
+Clang provides a number of ways to control code generation. The options
+are listed below.
+
+**-f[no-]sanitize=check1,check2,...**
+ Turn on runtime checks for various forms of undefined or suspicious
+ behavior.
+
+ This option controls whether Clang adds runtime checks for various
+ forms of undefined or suspicious behavior, and is disabled by
+ default. If a check fails, a diagnostic message is produced at
+ runtime explaining the problem. The main checks are:
+
+ - .. _opt_fsanitize_address:
+
+ ``-fsanitize=address``:
+ :doc:`AddressSanitizer`, a memory error
+ detector.
+ - .. _opt_fsanitize_thread:
+
+ ``-fsanitize=thread``: :doc:`ThreadSanitizer`, a data race detector.
+ - .. _opt_fsanitize_memory:
+
+ ``-fsanitize=memory``: :doc:`MemorySanitizer`,
+ a detector of uninitialized reads. Requires instrumentation of all
+ program code.
+ - .. _opt_fsanitize_undefined:
+
+ ``-fsanitize=undefined``: :doc:`UndefinedBehaviorSanitizer`,
+ a fast and compatible undefined behavior checker.
+
+ - ``-fsanitize=dataflow``: :doc:`DataFlowSanitizer`, a general data
+ flow analysis.
+ - ``-fsanitize=cfi``: :doc:`control flow integrity <ControlFlowIntegrity>`
+ checks. Requires ``-flto``.
+ - ``-fsanitize=safe-stack``: :doc:`safe stack <SafeStack>`
+ protection against stack-based memory corruption errors.
+
+ There are more fine-grained checks available: see
+ the :ref:`list <ubsan-checks>` of specific kinds of
+ undefined behavior that can be detected and the :ref:`list <cfi-schemes>`
+ of control flow integrity schemes.
+
+ The ``-fsanitize=`` argument must also be provided when linking, in
+ order to link to the appropriate runtime library.
+
+ It is not possible to combine more than one of the ``-fsanitize=address``,
+ ``-fsanitize=thread``, and ``-fsanitize=memory`` checkers in the same
+ program.
+
+**-f[no-]sanitize-recover=check1,check2,...**
+
+**-f[no-]sanitize-recover=all**
+
+ Controls which checks enabled by ``-fsanitize=`` flag are non-fatal.
+ If the check is fatal, program will halt after the first error
+ of this kind is detected and error report is printed.
+
+ By default, non-fatal checks are those enabled by
+ :doc:`UndefinedBehaviorSanitizer`,
+ except for ``-fsanitize=return`` and ``-fsanitize=unreachable``. Some
+ sanitizers may not support recovery (or not support it by default
+ e.g. :doc:`AddressSanitizer`), and always crash the program after the issue
+ is detected.
+
+ Note that the ``-fsanitize-trap`` flag has precedence over this flag.
+ This means that if a check has been configured to trap elsewhere on the
+ command line, or if the check traps by default, this flag will not have
+ any effect unless that sanitizer's trapping behavior is disabled with
+ ``-fno-sanitize-trap``.
+
+ For example, if a command line contains the flags ``-fsanitize=undefined
+ -fsanitize-trap=undefined``, the flag ``-fsanitize-recover=alignment``
+ will have no effect on its own; it will need to be accompanied by
+ ``-fno-sanitize-trap=alignment``.
+
+**-f[no-]sanitize-trap=check1,check2,...**
+
+ Controls which checks enabled by the ``-fsanitize=`` flag trap. This
+ option is intended for use in cases where the sanitizer runtime cannot
+ be used (for instance, when building libc or a kernel module), or where
+ the binary size increase caused by the sanitizer runtime is a concern.
+
+ This flag is only compatible with :doc:`control flow integrity
+ <ControlFlowIntegrity>` schemes and :doc:`UndefinedBehaviorSanitizer`
+ checks other than ``vptr``. If this flag
+ is supplied together with ``-fsanitize=undefined``, the ``vptr`` sanitizer
+ will be implicitly disabled.
+
+ This flag is enabled by default for sanitizers in the ``cfi`` group.
+
+.. option:: -fsanitize-blacklist=/path/to/blacklist/file
+
+ Disable or modify sanitizer checks for objects (source files, functions,
+ variables, types) listed in the file. See
+ :doc:`SanitizerSpecialCaseList` for file format description.
+
+.. option:: -fno-sanitize-blacklist
+
+ Don't use blacklist file, if it was specified earlier in the command line.
+
+**-f[no-]sanitize-coverage=[type,features,...]**
+
+ Enable simple code coverage in addition to certain sanitizers.
+ See :doc:`SanitizerCoverage` for more details.
+
+**-f[no-]sanitize-stats**
+
+ Enable simple statistics gathering for the enabled sanitizers.
+ See :doc:`SanitizerStats` for more details.
+
+.. option:: -fsanitize-undefined-trap-on-error
+
+ Deprecated alias for ``-fsanitize-trap=undefined``.
+
+.. option:: -fsanitize-cfi-cross-dso
+
+ Enable cross-DSO control flow integrity checks. This flag modifies
+ the behavior of sanitizers in the ``cfi`` group to allow checking
+ of cross-DSO virtual and indirect calls.
+
+.. option:: -ffast-math
+
+ Enable fast-math mode. This defines the ``__FAST_MATH__`` preprocessor
+ macro, and lets the compiler make aggressive, potentially-lossy assumptions
+ about floating-point math. These include:
+
+ * Floating-point math obeys regular algebraic rules for real numbers (e.g.
+ ``+`` and ``*`` are associative, ``x/y == x * (1/y)``, and
+ ``(a + b) * c == a * c + b * c``),
+ * operands to floating-point operations are not equal to ``NaN`` and
+ ``Inf``, and
+ * ``+0`` and ``-0`` are interchangeable.
+
+.. option:: -fwhole-program-vtables
+
+ Enable whole-program vtable optimizations, such as single-implementation
+ devirtualization and virtual constant propagation, for classes with
+ :doc:`hidden LTO visibility <LTOVisibility>`. Requires ``-flto``.
+
+.. option:: -fno-assume-sane-operator-new
+
+ Don't assume that the C++'s new operator is sane.
+
+ This option tells the compiler to do not assume that C++'s global
+ new operator will always return a pointer that does not alias any
+ other pointer when the function returns.
+
+.. option:: -ftrap-function=[name]
+
+ Instruct code generator to emit a function call to the specified
+ function name for ``__builtin_trap()``.
+
+ LLVM code generator translates ``__builtin_trap()`` to a trap
+ instruction if it is supported by the target ISA. Otherwise, the
+ builtin is translated into a call to ``abort``. If this option is
+ set, then the code generator will always lower the builtin to a call
+ to the specified function regardless of whether the target ISA has a
+ trap instruction. This option is useful for environments (e.g.
+ deeply embedded) where a trap cannot be properly handled, or when
+ some custom behavior is desired.
+
+.. option:: -ftls-model=[model]
+
+ Select which TLS model to use.
+
+ Valid values are: ``global-dynamic``, ``local-dynamic``,
+ ``initial-exec`` and ``local-exec``. The default value is
+ ``global-dynamic``. The compiler may use a different model if the
+ selected model is not supported by the target, or if a more
+ efficient model can be used. The TLS model can be overridden per
+ variable using the ``tls_model`` attribute.
+
+.. option:: -femulated-tls
+
+ Select emulated TLS model, which overrides all -ftls-model choices.
+
+ In emulated TLS mode, all access to TLS variables are converted to
+ calls to __emutls_get_address in the runtime library.
+
+.. option:: -mhwdiv=[values]
+
+ Select the ARM modes (arm or thumb) that support hardware division
+ instructions.
+
+ Valid values are: ``arm``, ``thumb`` and ``arm,thumb``.
+ This option is used to indicate which mode (arm or thumb) supports
+ hardware division instructions. This only applies to the ARM
+ architecture.
+
+.. option:: -m[no-]crc
+
+ Enable or disable CRC instructions.
+
+ This option is used to indicate whether CRC instructions are to
+ be generated. This only applies to the ARM architecture.
+
+ CRC instructions are enabled by default on ARMv8.
+
+.. option:: -mgeneral-regs-only
+
+ Generate code which only uses the general purpose registers.
+
+ This option restricts the generated code to use general registers
+ only. This only applies to the AArch64 architecture.
+
+.. option:: -mcompact-branches=[values]
+
+ Control the usage of compact branches for MIPSR6.
+
+ Valid values are: ``never``, ``optimal`` and ``always``.
+ The default value is ``optimal`` which generates compact branches
+ when a delay slot cannot be filled. ``never`` disables the usage of
+ compact branches and ``always`` generates compact branches whenever
+ possible.
+
+**-f[no-]max-type-align=[number]**
+ Instruct the code generator to not enforce a higher alignment than the given
+ number (of bytes) when accessing memory via an opaque pointer or reference.
+ This cap is ignored when directly accessing a variable or when the pointee
+ type has an explicit âalignedâ attribute.
+
+ The value should usually be determined by the properties of the system allocator.
+ Some builtin types, especially vector types, have very high natural alignments;
+ when working with values of those types, Clang usually wants to use instructions
+ that take advantage of that alignment. However, many system allocators do
+ not promise to return memory that is more than 8-byte or 16-byte-aligned. Use
+ this option to limit the alignment that the compiler can assume for an arbitrary
+ pointer, which may point onto the heap.
+
+ This option does not affect the ABI alignment of types; the layout of structs and
+ unions and the value returned by the alignof operator remain the same.
+
+ This option can be overridden on a case-by-case basis by putting an explicit
+ âalignedâ alignment on a struct, union, or typedef. For example:
+
+ .. code-block:: console
+
+ #include <immintrin.h>
+ // Make an aligned typedef of the AVX-512 16-int vector type.
+ typedef __v16si __aligned_v16si __attribute__((aligned(64)));
+
+ void initialize_vector(__aligned_v16si *v) {
+ // The compiler may assume that âvâ is 64-byte aligned, regardless of the
+ // value of -fmax-type-align.
+ }
+
+
+Profile Guided Optimization
+---------------------------
+
+Profile information enables better optimization. For example, knowing that a
+branch is taken very frequently helps the compiler make better decisions when
+ordering basic blocks. Knowing that a function ``foo`` is called more
+frequently than another function ``bar`` helps the inliner.
+
+Clang supports profile guided optimization with two different kinds of
+profiling. A sampling profiler can generate a profile with very low runtime
+overhead, or you can build an instrumented version of the code that collects
+more detailed profile information. Both kinds of profiles can provide execution
+counts for instructions in the code and information on branches taken and
+function invocation.
+
+Regardless of which kind of profiling you use, be careful to collect profiles
+by running your code with inputs that are representative of the typical
+behavior. Code that is not exercised in the profile will be optimized as if it
+is unimportant, and the compiler may make poor optimization choices for code
+that is disproportionately used while profiling.
+
+Differences Between Sampling and Instrumentation
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Although both techniques are used for similar purposes, there are important
+differences between the two:
+
+1. Profile data generated with one cannot be used by the other, and there is no
+ conversion tool that can convert one to the other. So, a profile generated
+ via ``-fprofile-instr-generate`` must be used with ``-fprofile-instr-use``.
+ Similarly, sampling profiles generated by external profilers must be
+ converted and used with ``-fprofile-sample-use``.
+
+2. Instrumentation profile data can be used for code coverage analysis and
+ optimization.
+
+3. Sampling profiles can only be used for optimization. They cannot be used for
+ code coverage analysis. Although it would be technically possible to use
+ sampling profiles for code coverage, sample-based profiles are too
+ coarse-grained for code coverage purposes; it would yield poor results.
+
+4. Sampling profiles must be generated by an external tool. The profile
+ generated by that tool must then be converted into a format that can be read
+ by LLVM. The section on sampling profilers describes one of the supported
+ sampling profile formats.
+
+
+Using Sampling Profilers
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+Sampling profilers are used to collect runtime information, such as
+hardware counters, while your application executes. They are typically
+very efficient and do not incur a large runtime overhead. The
+sample data collected by the profiler can be used during compilation
+to determine what the most executed areas of the code are.
+
+Using the data from a sample profiler requires some changes in the way
+a program is built. Before the compiler can use profiling information,
+the code needs to execute under the profiler. The following is the
+usual build cycle when using sample profilers for optimization:
+
+1. Build the code with source line table information. You can use all the
+ usual build flags that you always build your application with. The only
+ requirement is that you add ``-gline-tables-only`` or ``-g`` to the
+ command line. This is important for the profiler to be able to map
+ instructions back to source line locations.
+
+ .. code-block:: console
+
+ $ clang++ -O2 -gline-tables-only code.cc -o code
+
+2. Run the executable under a sampling profiler. The specific profiler
+ you use does not really matter, as long as its output can be converted
+ into the format that the LLVM optimizer understands. Currently, there
+ exists a conversion tool for the Linux Perf profiler
+ (https://perf.wiki.kernel.org/), so these examples assume that you
+ are using Linux Perf to profile your code.
+
+ .. code-block:: console
+
+ $ perf record -b ./code
+
+ Note the use of the ``-b`` flag. This tells Perf to use the Last Branch
+ Record (LBR) to record call chains. While this is not strictly required,
+ it provides better call information, which improves the accuracy of
+ the profile data.
+
+3. Convert the collected profile data to LLVM's sample profile format.
+ This is currently supported via the AutoFDO converter ``create_llvm_prof``.
+ It is available at http://github.com/google/autofdo. Once built and
+ installed, you can convert the ``perf.data`` file to LLVM using
+ the command:
+
+ .. code-block:: console
+
+ $ create_llvm_prof --binary=./code --out=code.prof
+
+ This will read ``perf.data`` and the binary file ``./code`` and emit
+ the profile data in ``code.prof``. Note that if you ran ``perf``
+ without the ``-b`` flag, you need to use ``--use_lbr=false`` when
+ calling ``create_llvm_prof``.
+
+4. Build the code again using the collected profile. This step feeds
+ the profile back to the optimizers. This should result in a binary
+ that executes faster than the original one. Note that you are not
+ required to build the code with the exact same arguments that you
+ used in the first step. The only requirement is that you build the code
+ with ``-gline-tables-only`` and ``-fprofile-sample-use``.
+
+ .. code-block:: console
+
+ $ clang++ -O2 -gline-tables-only -fprofile-sample-use=code.prof code.cc -o code
+
+
+Sample Profile Formats
+""""""""""""""""""""""
+
+Since external profilers generate profile data in a variety of custom formats,
+the data generated by the profiler must be converted into a format that can be
+read by the backend. LLVM supports three different sample profile formats:
+
+1. ASCII text. This is the easiest one to generate. The file is divided into
+ sections, which correspond to each of the functions with profile
+ information. The format is described below. It can also be generated from
+ the binary or gcov formats using the ``llvm-profdata`` tool.
+
+2. Binary encoding. This uses a more efficient encoding that yields smaller
+ profile files. This is the format generated by the ``create_llvm_prof`` tool
+ in http://github.com/google/autofdo.
+
+3. GCC encoding. This is based on the gcov format, which is accepted by GCC. It
+ is only interesting in environments where GCC and Clang co-exist. This
+ encoding is only generated by the ``create_gcov`` tool in
+ http://github.com/google/autofdo. It can be read by LLVM and
+ ``llvm-profdata``, but it cannot be generated by either.
+
+If you are using Linux Perf to generate sampling profiles, you can use the
+conversion tool ``create_llvm_prof`` described in the previous section.
+Otherwise, you will need to write a conversion tool that converts your
+profiler's native format into one of these three.
+
+
+Sample Profile Text Format
+""""""""""""""""""""""""""
+
+This section describes the ASCII text format for sampling profiles. It is,
+arguably, the easiest one to generate. If you are interested in generating any
+of the other two, consult the ``ProfileData`` library in in LLVM's source tree
+(specifically, ``include/llvm/ProfileData/SampleProfReader.h``).
+
+.. code-block:: console
+
+ function1:total_samples:total_head_samples
+ offset1[.discriminator]: number_of_samples [fn1:num fn2:num ... ]
+ offset2[.discriminator]: number_of_samples [fn3:num fn4:num ... ]
+ ...
+ offsetN[.discriminator]: number_of_samples [fn5:num fn6:num ... ]
+ offsetA[.discriminator]: fnA:num_of_total_samples
+ offsetA1[.discriminator]: number_of_samples [fn7:num fn8:num ... ]
+ offsetA1[.discriminator]: number_of_samples [fn9:num fn10:num ... ]
+ offsetB[.discriminator]: fnB:num_of_total_samples
+ offsetB1[.discriminator]: number_of_samples [fn11:num fn12:num ... ]
+
+This is a nested tree in which the identation represents the nesting level
+of the inline stack. There are no blank lines in the file. And the spacing
+within a single line is fixed. Additional spaces will result in an error
+while reading the file.
+
+Any line starting with the '#' character is completely ignored.
+
+Inlined calls are represented with indentation. The Inline stack is a
+stack of source locations in which the top of the stack represents the
+leaf function, and the bottom of the stack represents the actual
+symbol to which the instruction belongs.
+
+Function names must be mangled in order for the profile loader to
+match them in the current translation unit. The two numbers in the
+function header specify how many total samples were accumulated in the
+function (first number), and the total number of samples accumulated
+in the prologue of the function (second number). This head sample
+count provides an indicator of how frequently the function is invoked.
+
+There are two types of lines in the function body.
+
+- Sampled line represents the profile information of a source location.
+ ``offsetN[.discriminator]: number_of_samples [fn5:num fn6:num ... ]``
+
+- Callsite line represents the profile information of an inlined callsite.
+ ``offsetA[.discriminator]: fnA:num_of_total_samples``
+
+Each sampled line may contain several items. Some are optional (marked
+below):
+
+a. Source line offset. This number represents the line number
+ in the function where the sample was collected. The line number is
+ always relative to the line where symbol of the function is
+ defined. So, if the function has its header at line 280, the offset
+ 13 is at line 293 in the file.
+
+ Note that this offset should never be a negative number. This could
+ happen in cases like macros. The debug machinery will register the
+ line number at the point of macro expansion. So, if the macro was
+ expanded in a line before the start of the function, the profile
+ converter should emit a 0 as the offset (this means that the optimizers
+ will not be able to associate a meaningful weight to the instructions
+ in the macro).
+
+b. [OPTIONAL] Discriminator. This is used if the sampled program
+ was compiled with DWARF discriminator support
+ (http://wiki.dwarfstd.org/index.php?title=Path_Discriminators).
+ DWARF discriminators are unsigned integer values that allow the
+ compiler to distinguish between multiple execution paths on the
+ same source line location.
+
+ For example, consider the line of code ``if (cond) foo(); else bar();``.
+ If the predicate ``cond`` is true 80% of the time, then the edge
+ into function ``foo`` should be considered to be taken most of the
+ time. But both calls to ``foo`` and ``bar`` are at the same source
+ line, so a sample count at that line is not sufficient. The
+ compiler needs to know which part of that line is taken more
+ frequently.
+
+ This is what discriminators provide. In this case, the calls to
+ ``foo`` and ``bar`` will be at the same line, but will have
+ different discriminator values. This allows the compiler to correctly
+ set edge weights into ``foo`` and ``bar``.
+
+c. Number of samples. This is an integer quantity representing the
+ number of samples collected by the profiler at this source
+ location.
+
+d. [OPTIONAL] Potential call targets and samples. If present, this
+ line contains a call instruction. This models both direct and
+ number of samples. For example,
+
+ .. code-block:: console
+
+ 130: 7 foo:3 bar:2 baz:7
+
+ The above means that at relative line offset 130 there is a call
+ instruction that calls one of ``foo()``, ``bar()`` and ``baz()``,
+ with ``baz()`` being the relatively more frequently called target.
+
+As an example, consider a program with the call chain ``main -> foo -> bar``.
+When built with optimizations enabled, the compiler may inline the
+calls to ``bar`` and ``foo`` inside ``main``. The generated profile
+could then be something like this:
+
+.. code-block:: console
+
+ main:35504:0
+ 1: _Z3foov:35504
+ 2: _Z32bari:31977
+ 1.1: 31977
+ 2: 0
+
+This profile indicates that there were a total of 35,504 samples
+collected in main. All of those were at line 1 (the call to ``foo``).
+Of those, 31,977 were spent inside the body of ``bar``. The last line
+of the profile (``2: 0``) corresponds to line 2 inside ``main``. No
+samples were collected there.
+
+Profiling with Instrumentation
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Clang also supports profiling via instrumentation. This requires building a
+special instrumented version of the code and has some runtime
+overhead during the profiling, but it provides more detailed results than a
+sampling profiler. It also provides reproducible results, at least to the
+extent that the code behaves consistently across runs.
+
+Here are the steps for using profile guided optimization with
+instrumentation:
+
+1. Build an instrumented version of the code by compiling and linking with the
+ ``-fprofile-instr-generate`` option.
+
+ .. code-block:: console
+
+ $ clang++ -O2 -fprofile-instr-generate code.cc -o code
+
+2. Run the instrumented executable with inputs that reflect the typical usage.
+ By default, the profile data will be written to a ``default.profraw`` file
+ in the current directory. You can override that default by setting the
+ ``LLVM_PROFILE_FILE`` environment variable to specify an alternate file.
+ Any instance of ``%p`` in that file name will be replaced by the process
+ ID, so that you can easily distinguish the profile output from multiple
+ runs.
+
+ .. code-block:: console
+
+ $ LLVM_PROFILE_FILE="code-%p.profraw" ./code
+
+3. Combine profiles from multiple runs and convert the "raw" profile format to
+ the input expected by clang. Use the ``merge`` command of the
+ ``llvm-profdata`` tool to do this.
+
+ .. code-block:: console
+
+ $ llvm-profdata merge -output=code.profdata code-*.profraw
+
+ Note that this step is necessary even when there is only one "raw" profile,
+ since the merge operation also changes the file format.
+
+4. Build the code again using the ``-fprofile-instr-use`` option to specify the
+ collected profile data.
+
+ .. code-block:: console
+
+ $ clang++ -O2 -fprofile-instr-use=code.profdata code.cc -o code
+
+ You can repeat step 4 as often as you like without regenerating the
+ profile. As you make changes to your code, clang may no longer be able to
+ use the profile data. It will warn you when this happens.
+
+Profile generation using an alternative instrumentation method can be
+controlled by the GCC-compatible flags ``-fprofile-generate`` and
+``-fprofile-use``. Although these flags are semantically equivalent to
+their GCC counterparts, they *do not* handle GCC-compatible profiles.
+They are only meant to implement GCC's semantics with respect to
+profile creation and use.
+
+.. option:: -fprofile-generate[=<dirname>]
+
+ The ``-fprofile-generate`` and ``-fprofile-generate=`` flags will use
+ an alterantive instrumentation method for profile generation. When
+ given a directory name, it generates the profile file
+ ``default.profraw`` in the directory named ``dirname``. If ``dirname``
+ does not exist, it will be created at runtime. The environment variable
+ ``LLVM_PROFILE_FILE`` can be used to override the directory and
+ filename for the profile file at runtime. For example,
+
+ .. code-block:: console
+
+ $ clang++ -O2 -fprofile-generate=yyy/zzz code.cc -o code
+
+ When ``code`` is executed, the profile will be written to the file
+ ``yyy/zzz/default.profraw``. This can be altered at runtime via the
+ ``LLVM_PROFILE_FILE`` environment variable:
+
+ .. code-block:: console
+
+ $ LLVM_PROFILE_FILE=/tmp/myprofile/code.profraw ./code
+
+ The above invocation will produce the profile file
+ ``/tmp/myprofile/code.profraw`` instead of ``yyy/zzz/default.profraw``.
+ Notice that ``LLVM_PROFILE_FILE`` overrides the directory *and* the file
+ name for the profile file.
+
+.. option:: -fprofile-use[=<pathname>]
+
+ Without any other arguments, ``-fprofile-use`` behaves identically to
+ ``-fprofile-instr-use``. Otherwise, if ``pathname`` is the full path to a
+ profile file, it reads from that file. If ``pathname`` is a directory name,
+ it reads from ``pathname/default.profdata``.
+
+Disabling Instrumentation
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+In certain situations, it may be useful to disable profile generation or use
+for specific files in a build, without affecting the main compilation flags
+used for the other files in the project.
+
+In these cases, you can use the flag ``-fno-profile-instr-generate`` (or
+``-fno-profile-generate``) to disable profile generation, and
+``-fno-profile-instr-use`` (or ``-fno-profile-use``) to disable profile use.
+
+Note that these flags should appear after the corresponding profile
+flags to have an effect.
+
+Controlling Debug Information
+-----------------------------
+
+Controlling Size of Debug Information
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Debug info kind generated by Clang can be set by one of the flags listed
+below. If multiple flags are present, the last one is used.
+
+.. option:: -g0
+
+ Don't generate any debug info (default).
+
+.. option:: -gline-tables-only
+
+ Generate line number tables only.
+
+ This kind of debug info allows to obtain stack traces with function names,
+ file names and line numbers (by such tools as ``gdb`` or ``addr2line``). It
+ doesn't contain any other data (e.g. description of local variables or
+ function parameters).
+
+.. option:: -fstandalone-debug
+
+ Clang supports a number of optimizations to reduce the size of debug
+ information in the binary. They work based on the assumption that
+ the debug type information can be spread out over multiple
+ compilation units. For instance, Clang will not emit type
+ definitions for types that are not needed by a module and could be
+ replaced with a forward declaration. Further, Clang will only emit
+ type info for a dynamic C++ class in the module that contains the
+ vtable for the class.
+
+ The **-fstandalone-debug** option turns off these optimizations.
+ This is useful when working with 3rd-party libraries that don't come
+ with debug information. Note that Clang will never emit type
+ information for types that are not referenced at all by the program.
+
+.. option:: -fno-standalone-debug
+
+ On Darwin **-fstandalone-debug** is enabled by default. The
+ **-fno-standalone-debug** option can be used to get to turn on the
+ vtable-based optimization described above.
+
+.. option:: -g
+
+ Generate complete debug info.
+
+Controlling Debugger "Tuning"
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+While Clang generally emits standard DWARF debug info (http://dwarfstd.org),
+different debuggers may know how to take advantage of different specific DWARF
+features. You can "tune" the debug info for one of several different debuggers.
+
+.. option:: -ggdb, -glldb, -gsce
+
+ Tune the debug info for the ``gdb``, ``lldb``, or Sony Computer Entertainment
+ debugger, respectively. Each of these options implies **-g**. (Therefore, if
+ you want both **-gline-tables-only** and debugger tuning, the tuning option
+ must come first.)
+
+
+Comment Parsing Options
+-----------------------
+
+Clang parses Doxygen and non-Doxygen style documentation comments and attaches
+them to the appropriate declaration nodes. By default, it only parses
+Doxygen-style comments and ignores ordinary comments starting with ``//`` and
+``/*``.
+
+.. option:: -Wdocumentation
+
+ Emit warnings about use of documentation comments. This warning group is off
+ by default.
+
+ This includes checking that ``\param`` commands name parameters that actually
+ present in the function signature, checking that ``\returns`` is used only on
+ functions that actually return a value etc.
+
+.. option:: -Wno-documentation-unknown-command
+
+ Don't warn when encountering an unknown Doxygen command.
+
+.. option:: -fparse-all-comments
+
+ Parse all comments as documentation comments (including ordinary comments
+ starting with ``//`` and ``/*``).
+
+.. option:: -fcomment-block-commands=[commands]
+
+ Define custom documentation commands as block commands. This allows Clang to
+ construct the correct AST for these custom commands, and silences warnings
+ about unknown commands. Several commands must be separated by a comma
+ *without trailing space*; e.g. ``-fcomment-block-commands=foo,bar`` defines
+ custom commands ``\foo`` and ``\bar``.
+
+ It is also possible to use ``-fcomment-block-commands`` several times; e.g.
+ ``-fcomment-block-commands=foo -fcomment-block-commands=bar`` does the same
+ as above.
+
+.. _c:
+
+C Language Features
+===================
+
+The support for standard C in clang is feature-complete except for the
+C99 floating-point pragmas.
+
+Extensions supported by clang
+-----------------------------
+
+See :doc:`LanguageExtensions`.
+
+Differences between various standard modes
+------------------------------------------
+
+clang supports the -std option, which changes what language mode clang
+uses. The supported modes for C are c89, gnu89, c94, c99, gnu99, c11,
+gnu11, and various aliases for those modes. If no -std option is
+specified, clang defaults to gnu11 mode. Many C99 and C11 features are
+supported in earlier modes as a conforming extension, with a warning. Use
+``-pedantic-errors`` to request an error if a feature from a later standard
+revision is used in an earlier mode.
+
+Differences between all ``c*`` and ``gnu*`` modes:
+
+- ``c*`` modes define "``__STRICT_ANSI__``".
+- Target-specific defines not prefixed by underscores, like "linux",
+ are defined in ``gnu*`` modes.
+- Trigraphs default to being off in ``gnu*`` modes; they can be enabled by
+ the -trigraphs option.
+- The parser recognizes "asm" and "typeof" as keywords in ``gnu*`` modes;
+ the variants "``__asm__``" and "``__typeof__``" are recognized in all
+ modes.
+- The Apple "blocks" extension is recognized by default in ``gnu*`` modes
+ on some platforms; it can be enabled in any mode with the "-fblocks"
+ option.
+- Arrays that are VLA's according to the standard, but which can be
+ constant folded by the frontend are treated as fixed size arrays.
+ This occurs for things like "int X[(1, 2)];", which is technically a
+ VLA. ``c*`` modes are strictly compliant and treat these as VLAs.
+
+Differences between ``*89`` and ``*99`` modes:
+
+- The ``*99`` modes default to implementing "inline" as specified in C99,
+ while the ``*89`` modes implement the GNU version. This can be
+ overridden for individual functions with the ``__gnu_inline__``
+ attribute.
+- Digraphs are not recognized in c89 mode.
+- The scope of names defined inside a "for", "if", "switch", "while",
+ or "do" statement is different. (example: "``if ((struct x {int
+ x;}*)0) {}``".)
+- ``__STDC_VERSION__`` is not defined in ``*89`` modes.
+- "inline" is not recognized as a keyword in c89 mode.
+- "restrict" is not recognized as a keyword in ``*89`` modes.
+- Commas are allowed in integer constant expressions in ``*99`` modes.
+- Arrays which are not lvalues are not implicitly promoted to pointers
+ in ``*89`` modes.
+- Some warnings are different.
+
+Differences between ``*99`` and ``*11`` modes:
+
+- Warnings for use of C11 features are disabled.
+- ``__STDC_VERSION__`` is defined to ``201112L`` rather than ``199901L``.
+
+c94 mode is identical to c89 mode except that digraphs are enabled in
+c94 mode (FIXME: And ``__STDC_VERSION__`` should be defined!).
+
+GCC extensions not implemented yet
+----------------------------------
+
+clang tries to be compatible with gcc as much as possible, but some gcc
+extensions are not implemented yet:
+
+- clang does not support decimal floating point types (``_Decimal32`` and
+ friends) or fixed-point types (``_Fract`` and friends); nobody has
+ expressed interest in these features yet, so it's hard to say when
+ they will be implemented.
+- clang does not support nested functions; this is a complex feature
+ which is infrequently used, so it is unlikely to be implemented
+ anytime soon. In C++11 it can be emulated by assigning lambda
+ functions to local variables, e.g:
+
+ .. code-block:: cpp
+
+ auto const local_function = [&](int parameter) {
+ // Do something
+ };
+ ...
+ local_function(1);
+
+- clang does not support static initialization of flexible array
+ members. This appears to be a rarely used extension, but could be
+ implemented pending user demand.
+- clang does not support
+ ``__builtin_va_arg_pack``/``__builtin_va_arg_pack_len``. This is
+ used rarely, but in some potentially interesting places, like the
+ glibc headers, so it may be implemented pending user demand. Note
+ that because clang pretends to be like GCC 4.2, and this extension
+ was introduced in 4.3, the glibc headers will not try to use this
+ extension with clang at the moment.
+- clang does not support the gcc extension for forward-declaring
+ function parameters; this has not shown up in any real-world code
+ yet, though, so it might never be implemented.
+
+This is not a complete list; if you find an unsupported extension
+missing from this list, please send an e-mail to cfe-dev. This list
+currently excludes C++; see :ref:`C++ Language Features <cxx>`. Also, this
+list does not include bugs in mostly-implemented features; please see
+the `bug
+tracker <http://llvm.org/bugs/buglist.cgi?quicksearch=product%3Aclang+component%3A-New%2BBugs%2CAST%2CBasic%2CDriver%2CHeaders%2CLLVM%2BCodeGen%2Cparser%2Cpreprocessor%2CSemantic%2BAnalyzer>`_
+for known existing bugs (FIXME: Is there a section for bug-reporting
+guidelines somewhere?).
+
+Intentionally unsupported GCC extensions
+----------------------------------------
+
+- clang does not support the gcc extension that allows variable-length
+ arrays in structures. This is for a few reasons: one, it is tricky to
+ implement, two, the extension is completely undocumented, and three,
+ the extension appears to be rarely used. Note that clang *does*
+ support flexible array members (arrays with a zero or unspecified
+ size at the end of a structure).
+- clang does not have an equivalent to gcc's "fold"; this means that
+ clang doesn't accept some constructs gcc might accept in contexts
+ where a constant expression is required, like "x-x" where x is a
+ variable.
+- clang does not support ``__builtin_apply`` and friends; this extension
+ is extremely obscure and difficult to implement reliably.
+
+.. _c_ms:
+
+Microsoft extensions
+--------------------
+
+clang has support for many extensions from Microsoft Visual C++. To enable these
+extensions, use the ``-fms-extensions`` command-line option. This is the default
+for Windows targets. Clang does not implement every pragma or declspec provided
+by MSVC, but the popular ones, such as ``__declspec(dllexport)`` and ``#pragma
+comment(lib)`` are well supported.
+
+clang has a ``-fms-compatibility`` flag that makes clang accept enough
+invalid C++ to be able to parse most Microsoft headers. For example, it
+allows `unqualified lookup of dependent base class members
+<http://clang.llvm.org/compatibility.html#dep_lookup_bases>`_, which is
+a common compatibility issue with clang. This flag is enabled by default
+for Windows targets.
+
+``-fdelayed-template-parsing`` lets clang delay parsing of function template
+definitions until the end of a translation unit. This flag is enabled by
+default for Windows targets.
+
+For compatibility with existing code that compiles with MSVC, clang defines the
+``_MSC_VER`` and ``_MSC_FULL_VER`` macros. These default to the values of 1800
+and 180000000 respectively, making clang look like an early release of Visual
+C++ 2013. The ``-fms-compatibility-version=`` flag overrides these values. It
+accepts a dotted version tuple, such as 19.00.23506. Changing the MSVC
+compatibility version makes clang behave more like that version of MSVC. For
+example, ``-fms-compatibility-version=19`` will enable C++14 features and define
+``char16_t`` and ``char32_t`` as builtin types.
+
+.. _cxx:
+
+C++ Language Features
+=====================
+
+clang fully implements all of standard C++98 except for exported
+templates (which were removed in C++11), and all of standard C++11
+and the current draft standard for C++1y.
+
+Controlling implementation limits
+---------------------------------
+
+.. option:: -fbracket-depth=N
+
+ Sets the limit for nested parentheses, brackets, and braces to N. The
+ default is 256.
+
+.. option:: -fconstexpr-depth=N
+
+ Sets the limit for recursive constexpr function invocations to N. The
+ default is 512.
+
+.. option:: -ftemplate-depth=N
+
+ Sets the limit for recursively nested template instantiations to N. The
+ default is 256.
+
+.. option:: -foperator-arrow-depth=N
+
+ Sets the limit for iterative calls to 'operator->' functions to N. The
+ default is 256.
+
+.. _objc:
+
+Objective-C Language Features
+=============================
+
+.. _objcxx:
+
+Objective-C++ Language Features
+===============================
+
+.. _openmp:
+
+OpenMP Features
+===============
+
+Clang supports all OpenMP 3.1 directives and clauses. In addition, some
+features of OpenMP 4.0 are supported. For example, ``#pragma omp simd``,
+``#pragma omp for simd``, ``#pragma omp parallel for simd`` directives, extended
+set of atomic constructs, ``proc_bind`` clause for all parallel-based
+directives, ``depend`` clause for ``#pragma omp task`` directive (except for
+array sections), ``#pragma omp cancel`` and ``#pragma omp cancellation point``
+directives, and ``#pragma omp taskgroup`` directive.
+
+Use `-fopenmp` to enable OpenMP. Support for OpenMP can be disabled with
+`-fno-openmp`.
+
+Controlling implementation limits
+---------------------------------
+
+.. option:: -fopenmp-use-tls
+
+ Controls code generation for OpenMP threadprivate variables. In presence of
+ this option all threadprivate variables are generated the same way as thread
+ local variables, using TLS support. If `-fno-openmp-use-tls`
+ is provided or target does not support TLS, code generation for threadprivate
+ variables relies on OpenMP runtime library.
+
+.. _target_features:
+
+Target-Specific Features and Limitations
+========================================
+
+CPU Architectures Features and Limitations
+------------------------------------------
+
+X86
+^^^
+
+The support for X86 (both 32-bit and 64-bit) is considered stable on
+Darwin (Mac OS X), Linux, FreeBSD, and Dragonfly BSD: it has been tested
+to correctly compile many large C, C++, Objective-C, and Objective-C++
+codebases.
+
+On ``x86_64-mingw32``, passing i128(by value) is incompatible with the
+Microsoft x64 calling convention. You might need to tweak
+``WinX86_64ABIInfo::classify()`` in lib/CodeGen/TargetInfo.cpp.
+
+For the X86 target, clang supports the `-m16` command line
+argument which enables 16-bit code output. This is broadly similar to
+using ``asm(".code16gcc")`` with the GNU toolchain. The generated code
+and the ABI remains 32-bit but the assembler emits instructions
+appropriate for a CPU running in 16-bit mode, with address-size and
+operand-size prefixes to enable 32-bit addressing and operations.
+
+ARM
+^^^
+
+The support for ARM (specifically ARMv6 and ARMv7) is considered stable
+on Darwin (iOS): it has been tested to correctly compile many large C,
+C++, Objective-C, and Objective-C++ codebases. Clang only supports a
+limited number of ARM architectures. It does not yet fully support
+ARMv5, for example.
+
+PowerPC
+^^^^^^^
+
+The support for PowerPC (especially PowerPC64) is considered stable
+on Linux and FreeBSD: it has been tested to correctly compile many
+large C and C++ codebases. PowerPC (32bit) is still missing certain
+features (e.g. PIC code on ELF platforms).
+
+Other platforms
+^^^^^^^^^^^^^^^
+
+clang currently contains some support for other architectures (e.g. Sparc);
+however, significant pieces of code generation are still missing, and they
+haven't undergone significant testing.
+
+clang contains limited support for the MSP430 embedded processor, but
+both the clang support and the LLVM backend support are highly
+experimental.
+
+Other platforms are completely unsupported at the moment. Adding the
+minimal support needed for parsing and semantic analysis on a new
+platform is quite easy; see ``lib/Basic/Targets.cpp`` in the clang source
+tree. This level of support is also sufficient for conversion to LLVM IR
+for simple programs. Proper support for conversion to LLVM IR requires
+adding code to ``lib/CodeGen/CGCall.cpp`` at the moment; this is likely to
+change soon, though. Generating assembly requires a suitable LLVM
+backend.
+
+Operating System Features and Limitations
+-----------------------------------------
+
+Darwin (Mac OS X)
+^^^^^^^^^^^^^^^^^
+
+Thread Sanitizer is not supported.
+
+Windows
+^^^^^^^
+
+Clang has experimental support for targeting "Cygming" (Cygwin / MinGW)
+platforms.
+
+See also :ref:`Microsoft Extensions <c_ms>`.
+
+Cygwin
+""""""
+
+Clang works on Cygwin-1.7.
+
+MinGW32
+"""""""
+
+Clang works on some mingw32 distributions. Clang assumes directories as
+below;
+
+- ``C:/mingw/include``
+- ``C:/mingw/lib``
+- ``C:/mingw/lib/gcc/mingw32/4.[3-5].0/include/c++``
+
+On MSYS, a few tests might fail.
+
+MinGW-w64
+"""""""""
+
+For 32-bit (i686-w64-mingw32), and 64-bit (x86\_64-w64-mingw32), Clang
+assumes as below;
+
+- ``GCC versions 4.5.0 to 4.5.3, 4.6.0 to 4.6.2, or 4.7.0 (for the C++ header search path)``
+- ``some_directory/bin/gcc.exe``
+- ``some_directory/bin/clang.exe``
+- ``some_directory/bin/clang++.exe``
+- ``some_directory/bin/../include/c++/GCC_version``
+- ``some_directory/bin/../include/c++/GCC_version/x86_64-w64-mingw32``
+- ``some_directory/bin/../include/c++/GCC_version/i686-w64-mingw32``
+- ``some_directory/bin/../include/c++/GCC_version/backward``
+- ``some_directory/bin/../x86_64-w64-mingw32/include``
+- ``some_directory/bin/../i686-w64-mingw32/include``
+- ``some_directory/bin/../include``
+
+This directory layout is standard for any toolchain you will find on the
+official `MinGW-w64 website <http://mingw-w64.sourceforge.net>`_.
+
+Clang expects the GCC executable "gcc.exe" compiled for
+``i686-w64-mingw32`` (or ``x86_64-w64-mingw32``) to be present on PATH.
+
+`Some tests might fail <http://llvm.org/bugs/show_bug.cgi?id=9072>`_ on
+``x86_64-w64-mingw32``.
+
+.. _clang-cl:
+
+clang-cl
+========
+
+clang-cl is an alternative command-line interface to Clang driver, designed for
+compatibility with the Visual C++ compiler, cl.exe.
+
+To enable clang-cl to find system headers, libraries, and the linker when run
+from the command-line, it should be executed inside a Visual Studio Native Tools
+Command Prompt or a regular Command Prompt where the environment has been set
+up using e.g. `vcvars32.bat <http://msdn.microsoft.com/en-us/library/f2ccy3wt.aspx>`_.
+
+clang-cl can also be used from inside Visual Studio by using an LLVM Platform
+Toolset.
+
+Command-Line Options
+--------------------
+
+To be compatible with cl.exe, clang-cl supports most of the same command-line
+options. Those options can start with either ``/`` or ``-``. It also supports
+some of Clang's core options, such as the ``-W`` options.
+
+Options that are known to clang-cl, but not currently supported, are ignored
+with a warning. For example:
+
+ ::
+
+ clang-cl.exe: warning: argument unused during compilation: '/AI'
+
+To suppress warnings about unused arguments, use the ``-Qunused-arguments`` option.
+
+Options that are not known to clang-cl will be ignored by default. Use the
+``-Werror=unknown-argument`` option in order to treat them as errors. If these
+options are spelled with a leading ``/``, they will be mistaken for a filename:
+
+ ::
+
+ clang-cl.exe: error: no such file or directory: '/foobar'
+
+Please `file a bug <http://llvm.org/bugs/enter_bug.cgi?product=clang&component=Driver>`_
+for any valid cl.exe flags that clang-cl does not understand.
+
+Execute ``clang-cl /?`` to see a list of supported options:
+
+ ::
+
+ CL.EXE COMPATIBILITY OPTIONS:
+ /? Display available options
+ /arch:<value> Set architecture for code generation
+ /Brepro- Emit an object file which cannot be reproduced over time
+ /Brepro Emit an object file which can be reproduced over time
+ /C Don't discard comments when preprocessing
+ /c Compile only
+ /D <macro[=value]> Define macro
+ /EH<value> Exception handling model
+ /EP Disable linemarker output and preprocess to stdout
+ /E Preprocess to stdout
+ /fallback Fall back to cl.exe if clang-cl fails to compile
+ /FA Output assembly code file during compilation
+ /Fa<file or directory> Output assembly code to this file during compilation (with /FA)
+ /Fe<file or directory> Set output executable file or directory (ends in / or \)
+ /FI <value> Include file before parsing
+ /Fi<file> Set preprocess output file name (with /P)
+ /Fo<file or directory> Set output object file, or directory (ends in / or \) (with /c)
+ /fp:except-
+ /fp:except
+ /fp:fast
+ /fp:precise
+ /fp:strict
+ /Fp<filename> Set pch filename (with /Yc and /Yu)
+ /GA Assume thread-local variables are defined in the executable
+ /Gd Set __cdecl as a default calling convention
+ /GF- Disable string pooling
+ /GR- Disable emission of RTTI data
+ /GR Enable emission of RTTI data
+ /Gr Set __fastcall as a default calling convention
+ /GS- Disable buffer security check
+ /GS Enable buffer security check
+ /Gs<value> Set stack probe size
+ /Gv Set __vectorcall as a default calling convention
+ /Gw- Don't put each data item in its own section
+ /Gw Put each data item in its own section
+ /GX- Enable exception handling
+ /GX Enable exception handling
+ /Gy- Don't put each function in its own section
+ /Gy Put each function in its own section
+ /Gz Set __stdcall as a default calling convention
+ /help Display available options
+ /imsvc <dir> Add directory to system include search path, as if part of %INCLUDE%
+ /I <dir> Add directory to include search path
+ /J Make char type unsigned
+ /LDd Create debug DLL
+ /LD Create DLL
+ /link <options> Forward options to the linker
+ /MDd Use DLL debug run-time
+ /MD Use DLL run-time
+ /MTd Use static debug run-time
+ /MT Use static run-time
+ /Od Disable optimization
+ /Oi- Disable use of builtin functions
+ /Oi Enable use of builtin functions
+ /Os Optimize for size
+ /Ot Optimize for speed
+ /O<value> Optimization level
+ /o <file or directory> Set output file or directory (ends in / or \)
+ /P Preprocess to file
+ /Qvec- Disable the loop vectorization passes
+ /Qvec Enable the loop vectorization passes
+ /showIncludes Print info about included files to stderr
+ /std:<value> Language standard to compile for
+ /TC Treat all source files as C
+ /Tc <filename> Specify a C source file
+ /TP Treat all source files as C++
+ /Tp <filename> Specify a C++ source file
+ /U <macro> Undefine macro
+ /vd<value> Control vtordisp placement
+ /vmb Use a best-case representation method for member pointers
+ /vmg Use a most-general representation for member pointers
+ /vmm Set the default most-general representation to multiple inheritance
+ /vms Set the default most-general representation to single inheritance
+ /vmv Set the default most-general representation to virtual inheritance
+ /volatile:iso Volatile loads and stores have standard semantics
+ /volatile:ms Volatile loads and stores have acquire and release semantics
+ /W0 Disable all warnings
+ /W1 Enable -Wall
+ /W2 Enable -Wall
+ /W3 Enable -Wall
+ /W4 Enable -Wall and -Wextra
+ /Wall Enable -Wall and -Wextra
+ /WX- Do not treat warnings as errors
+ /WX Treat warnings as errors
+ /w Disable all warnings
+ /Y- Disable precompiled headers, overrides /Yc and /Yu
+ /Yc<filename> Generate a pch file for all code up to and including <filename>
+ /Yu<filename> Load a pch file and use it instead of all code up to and including <filename>
+ /Z7 Enable CodeView debug information in object files
+ /Zc:sizedDealloc- Disable C++14 sized global deallocation functions
+ /Zc:sizedDealloc Enable C++14 sized global deallocation functions
+ /Zc:strictStrings Treat string literals as const
+ /Zc:threadSafeInit- Disable thread-safe initialization of static variables
+ /Zc:threadSafeInit Enable thread-safe initialization of static variables
+ /Zc:trigraphs- Disable trigraphs (default)
+ /Zc:trigraphs Enable trigraphs
+ /Zd Emit debug line number tables only
+ /Zi Alias for /Z7. Does not produce PDBs.
+ /Zl Don't mention any default libraries in the object file
+ /Zp Set the default maximum struct packing alignment to 1
+ /Zp<value> Specify the default maximum struct packing alignment
+ /Zs Syntax-check only
+
+ OPTIONS:
+ -### Print (but do not run) the commands to run for this compilation
+ --analyze Run the static analyzer
+ -fansi-escape-codes Use ANSI escape codes for diagnostics
+ -fcolor-diagnostics Use colors in diagnostics
+ -fdiagnostics-parseable-fixits
+ Print fix-its in machine parseable form
+ -fms-compatibility-version=<value>
+ Dot-separated value representing the Microsoft compiler version
+ number to report in _MSC_VER (0 = don't define it (default))
+ -fms-compatibility Enable full Microsoft Visual C++ compatibility
+ -fms-extensions Accept some non-standard constructs supported by the Microsoft compiler
+ -fmsc-version=<value> Microsoft compiler version number to report in _MSC_VER
+ (0 = don't define it (default))
+ -fno-sanitize-coverage=<value>
+ Disable specified features of coverage instrumentation for Sanitizers
+ -fno-sanitize-recover=<value>
+ Disable recovery for specified sanitizers
+ -fno-sanitize-trap=<value>
+ Disable trapping for specified sanitizers
+ -fsanitize-blacklist=<value>
+ Path to blacklist file for sanitizers
+ -fsanitize-coverage=<value>
+ Specify the type of coverage instrumentation for Sanitizers
+ -fsanitize-recover=<value>
+ Enable recovery for specified sanitizers
+ -fsanitize-trap=<value> Enable trapping for specified sanitizers
+ -fsanitize=<check> Turn on runtime checks for various forms of undefined or suspicious
+ behavior. See user manual for available checks
+ -gcodeview Generate CodeView debug information
+ -gline-tables-only Emit debug line number tables only
+ -miamcu Use Intel MCU ABI
+ -mllvm <value> Additional arguments to forward to LLVM's option processing
+ -Qunused-arguments Don't emit warning for unused driver arguments
+ -R<remark> Enable the specified remark
+ --target=<value> Generate code for the given target
+ -v Show commands to run and use verbose output
+ -W<warning> Enable the specified warning
+ -Xclang <arg> Pass <arg> to the clang compiler
+
+The /fallback Option
+^^^^^^^^^^^^^^^^^^^^
+
+When clang-cl is run with the ``/fallback`` option, it will first try to
+compile files itself. For any file that it fails to compile, it will fall back
+and try to compile the file by invoking cl.exe.
+
+This option is intended to be used as a temporary means to build projects where
+clang-cl cannot successfully compile all the files. clang-cl may fail to compile
+a file either because it cannot generate code for some C++ feature, or because
+it cannot parse some Microsoft language extension.
Added: www-releases/trunk/3.9.1/tools/clang/docs/_sources/index.txt
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--- www-releases/trunk/3.9.1/tools/clang/docs/_sources/index.txt (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_sources/index.txt Thu Dec 22 14:04:03 2016
@@ -0,0 +1,90 @@
+.. Clang documentation master file, created by
+ sphinx-quickstart on Sun Dec 9 20:01:55 2012.
+ You can adapt this file completely to your liking, but it should at least
+ contain the root `toctree` directive.
+
+.. title:: Welcome to Clang's documentation!
+
+.. toctree::
+ :maxdepth: 1
+
+ ReleaseNotes
+
+Using Clang as a Compiler
+=========================
+
+.. toctree::
+ :maxdepth: 1
+
+ UsersManual
+ LanguageExtensions
+ AttributeReference
+ CrossCompilation
+ ThreadSafetyAnalysis
+ AddressSanitizer
+ ThreadSanitizer
+ MemorySanitizer
+ UndefinedBehaviorSanitizer
+ DataFlowSanitizer
+ LeakSanitizer
+ SanitizerCoverage
+ SanitizerStats
+ SanitizerSpecialCaseList
+ ControlFlowIntegrity
+ LTOVisibility
+ SafeStack
+ SourceBasedCodeCoverage
+ Modules
+ MSVCCompatibility
+ CommandGuide/index
+ FAQ
+
+Using Clang as a Library
+========================
+
+.. toctree::
+ :maxdepth: 1
+
+ Tooling
+ ExternalClangExamples
+ IntroductionToTheClangAST
+ LibTooling
+ LibFormat
+ ClangPlugins
+ RAVFrontendAction
+ LibASTMatchersTutorial
+ LibASTMatchers
+ HowToSetupToolingForLLVM
+ JSONCompilationDatabase
+
+Using Clang Tools
+=================
+
+.. toctree::
+ :maxdepth: 1
+
+ ClangTools
+ ClangCheck
+ ClangFormat
+ ClangFormatStyleOptions
+
+Design Documents
+================
+
+.. toctree::
+ :maxdepth: 1
+
+ InternalsManual
+ DriverInternals
+ PTHInternals
+ PCHInternals
+ ItaniumMangleAbiTags
+
+
+Indices and tables
+==================
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`
+
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--- www-releases/trunk/3.9.1/tools/clang/docs/_static/basic.css (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_static/basic.css Thu Dec 22 14:04:03 2016
@@ -0,0 +1,537 @@
+/*
+ * basic.css
+ * ~~~~~~~~~
+ *
+ * Sphinx stylesheet -- basic theme.
+ *
+ * :copyright: Copyright 2007-2014 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+/* -- main layout ----------------------------------------------------------- */
+
+div.clearer {
+ clear: both;
+}
+
+/* -- relbar ---------------------------------------------------------------- */
+
+div.related {
+ width: 100%;
+ font-size: 90%;
+}
+
+div.related h3 {
+ display: none;
+}
+
+div.related ul {
+ margin: 0;
+ padding: 0 0 0 10px;
+ list-style: none;
+}
+
+div.related li {
+ display: inline;
+}
+
+div.related li.right {
+ float: right;
+ margin-right: 5px;
+}
+
+/* -- sidebar --------------------------------------------------------------- */
+
+div.sphinxsidebarwrapper {
+ padding: 10px 5px 0 10px;
+}
+
+div.sphinxsidebar {
+ float: left;
+ width: 230px;
+ margin-left: -100%;
+ font-size: 90%;
+}
+
+div.sphinxsidebar ul {
+ list-style: none;
+}
+
+div.sphinxsidebar ul ul,
+div.sphinxsidebar ul.want-points {
+ margin-left: 20px;
+ list-style: square;
+}
+
+div.sphinxsidebar ul ul {
+ margin-top: 0;
+ margin-bottom: 0;
+}
+
+div.sphinxsidebar form {
+ margin-top: 10px;
+}
+
+div.sphinxsidebar input {
+ border: 1px solid #98dbcc;
+ font-family: sans-serif;
+ font-size: 1em;
+}
+
+div.sphinxsidebar #searchbox input[type="text"] {
+ width: 170px;
+}
+
+div.sphinxsidebar #searchbox input[type="submit"] {
+ width: 30px;
+}
+
+img {
+ border: 0;
+ max-width: 100%;
+}
+
+/* -- search page ----------------------------------------------------------- */
+
+ul.search {
+ margin: 10px 0 0 20px;
+ padding: 0;
+}
+
+ul.search li {
+ padding: 5px 0 5px 20px;
+ background-image: url(file.png);
+ background-repeat: no-repeat;
+ background-position: 0 7px;
+}
+
+ul.search li a {
+ font-weight: bold;
+}
+
+ul.search li div.context {
+ color: #888;
+ margin: 2px 0 0 30px;
+ text-align: left;
+}
+
+ul.keywordmatches li.goodmatch a {
+ font-weight: bold;
+}
+
+/* -- index page ------------------------------------------------------------ */
+
+table.contentstable {
+ width: 90%;
+}
+
+table.contentstable p.biglink {
+ line-height: 150%;
+}
+
+a.biglink {
+ font-size: 1.3em;
+}
+
+span.linkdescr {
+ font-style: italic;
+ padding-top: 5px;
+ font-size: 90%;
+}
+
+/* -- general index --------------------------------------------------------- */
+
+table.indextable {
+ width: 100%;
+}
+
+table.indextable td {
+ text-align: left;
+ vertical-align: top;
+}
+
+table.indextable dl, table.indextable dd {
+ margin-top: 0;
+ margin-bottom: 0;
+}
+
+table.indextable tr.pcap {
+ height: 10px;
+}
+
+table.indextable tr.cap {
+ margin-top: 10px;
+ background-color: #f2f2f2;
+}
+
+img.toggler {
+ margin-right: 3px;
+ margin-top: 3px;
+ cursor: pointer;
+}
+
+div.modindex-jumpbox {
+ border-top: 1px solid #ddd;
+ border-bottom: 1px solid #ddd;
+ margin: 1em 0 1em 0;
+ padding: 0.4em;
+}
+
+div.genindex-jumpbox {
+ border-top: 1px solid #ddd;
+ border-bottom: 1px solid #ddd;
+ margin: 1em 0 1em 0;
+ padding: 0.4em;
+}
+
+/* -- general body styles --------------------------------------------------- */
+
+a.headerlink {
+ visibility: hidden;
+}
+
+h1:hover > a.headerlink,
+h2:hover > a.headerlink,
+h3:hover > a.headerlink,
+h4:hover > a.headerlink,
+h5:hover > a.headerlink,
+h6:hover > a.headerlink,
+dt:hover > a.headerlink {
+ visibility: visible;
+}
+
+div.body p.caption {
+ text-align: inherit;
+}
+
+div.body td {
+ text-align: left;
+}
+
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+ padding-left: 1em;
+}
+
+.first {
+ margin-top: 0 !important;
+}
+
+p.rubric {
+ margin-top: 30px;
+ font-weight: bold;
+}
+
+img.align-left, .figure.align-left, object.align-left {
+ clear: left;
+ float: left;
+ margin-right: 1em;
+}
+
+img.align-right, .figure.align-right, object.align-right {
+ clear: right;
+ float: right;
+ margin-left: 1em;
+}
+
+img.align-center, .figure.align-center, object.align-center {
+ display: block;
+ margin-left: auto;
+ margin-right: auto;
+}
+
+.align-left {
+ text-align: left;
+}
+
+.align-center {
+ text-align: center;
+}
+
+.align-right {
+ text-align: right;
+}
+
+/* -- sidebars -------------------------------------------------------------- */
+
+div.sidebar {
+ margin: 0 0 0.5em 1em;
+ border: 1px solid #ddb;
+ padding: 7px 7px 0 7px;
+ background-color: #ffe;
+ width: 40%;
+ float: right;
+}
+
+p.sidebar-title {
+ font-weight: bold;
+}
+
+/* -- topics ---------------------------------------------------------------- */
+
+div.topic {
+ border: 1px solid #ccc;
+ padding: 7px 7px 0 7px;
+ margin: 10px 0 10px 0;
+}
+
+p.topic-title {
+ font-size: 1.1em;
+ font-weight: bold;
+ margin-top: 10px;
+}
+
+/* -- admonitions ----------------------------------------------------------- */
+
+div.admonition {
+ margin-top: 10px;
+ margin-bottom: 10px;
+ padding: 7px;
+}
+
+div.admonition dt {
+ font-weight: bold;
+}
+
+div.admonition dl {
+ margin-bottom: 0;
+}
+
+p.admonition-title {
+ margin: 0px 10px 5px 0px;
+ font-weight: bold;
+}
+
+div.body p.centered {
+ text-align: center;
+ margin-top: 25px;
+}
+
+/* -- tables ---------------------------------------------------------------- */
+
+table.docutils {
+ border: 0;
+ border-collapse: collapse;
+}
+
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+ padding: 1px 8px 1px 5px;
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+
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+
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+ text-align: left;
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+
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+ border-left: solid 1px gray;
+ margin-left: 1px;
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+
+table.citation td {
+ border-bottom: none;
+}
+
+/* -- other body styles ----------------------------------------------------- */
+
+ol.arabic {
+ list-style: decimal;
+}
+
+ol.loweralpha {
+ list-style: lower-alpha;
+}
+
+ol.upperalpha {
+ list-style: upper-alpha;
+}
+
+ol.lowerroman {
+ list-style: lower-roman;
+}
+
+ol.upperroman {
+ list-style: upper-roman;
+}
+
+dl {
+ margin-bottom: 15px;
+}
+
+dd p {
+ margin-top: 0px;
+}
+
+dd ul, dd table {
+ margin-bottom: 10px;
+}
+
+dd {
+ margin-top: 3px;
+ margin-bottom: 10px;
+ margin-left: 30px;
+}
+
+dt:target, .highlighted {
+ background-color: #fbe54e;
+}
+
+dl.glossary dt {
+ font-weight: bold;
+ font-size: 1.1em;
+}
+
+.field-list ul {
+ margin: 0;
+ padding-left: 1em;
+}
+
+.field-list p {
+ margin: 0;
+}
+
+.optional {
+ font-size: 1.3em;
+}
+
+.versionmodified {
+ font-style: italic;
+}
+
+.system-message {
+ background-color: #fda;
+ padding: 5px;
+ border: 3px solid red;
+}
+
+.footnote:target {
+ background-color: #ffa;
+}
+
+.line-block {
+ display: block;
+ margin-top: 1em;
+ margin-bottom: 1em;
+}
+
+.line-block .line-block {
+ margin-top: 0;
+ margin-bottom: 0;
+ margin-left: 1.5em;
+}
+
+.guilabel, .menuselection {
+ font-family: sans-serif;
+}
+
+.accelerator {
+ text-decoration: underline;
+}
+
+.classifier {
+ font-style: oblique;
+}
+
+abbr, acronym {
+ border-bottom: dotted 1px;
+ cursor: help;
+}
+
+/* -- code displays --------------------------------------------------------- */
+
+pre {
+ overflow: auto;
+ overflow-y: hidden; /* fixes display issues on Chrome browsers */
+}
+
+td.linenos pre {
+ padding: 5px 0px;
+ border: 0;
+ background-color: transparent;
+ color: #aaa;
+}
+
+table.highlighttable {
+ margin-left: 0.5em;
+}
+
+table.highlighttable td {
+ padding: 0 0.5em 0 0.5em;
+}
+
+tt.descname {
+ background-color: transparent;
+ font-weight: bold;
+ font-size: 1.2em;
+}
+
+tt.descclassname {
+ background-color: transparent;
+}
+
+tt.xref, a tt {
+ background-color: transparent;
+ font-weight: bold;
+}
+
+h1 tt, h2 tt, h3 tt, h4 tt, h5 tt, h6 tt {
+ background-color: transparent;
+}
+
+.viewcode-link {
+ float: right;
+}
+
+.viewcode-back {
+ float: right;
+ font-family: sans-serif;
+}
+
+div.viewcode-block:target {
+ margin: -1px -10px;
+ padding: 0 10px;
+}
+
+/* -- math display ---------------------------------------------------------- */
+
+img.math {
+ vertical-align: middle;
+}
+
+div.body div.math p {
+ text-align: center;
+}
+
+span.eqno {
+ float: right;
+}
+
+/* -- printout stylesheet --------------------------------------------------- */
+
+ at media print {
+ div.document,
+ div.documentwrapper,
+ div.bodywrapper {
+ margin: 0 !important;
+ width: 100%;
+ }
+
+ div.sphinxsidebar,
+ div.related,
+ div.footer,
+ #top-link {
+ display: none;
+ }
+}
\ No newline at end of file
Added: www-releases/trunk/3.9.1/tools/clang/docs/_static/bg-page.png
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URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_static/doctools.js?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_static/doctools.js (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_static/doctools.js Thu Dec 22 14:04:03 2016
@@ -0,0 +1,238 @@
+/*
+ * doctools.js
+ * ~~~~~~~~~~~
+ *
+ * Sphinx JavaScript utilities for all documentation.
+ *
+ * :copyright: Copyright 2007-2014 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+/**
+ * select a different prefix for underscore
+ */
+$u = _.noConflict();
+
+/**
+ * make the code below compatible with browsers without
+ * an installed firebug like debugger
+if (!window.console || !console.firebug) {
+ var names = ["log", "debug", "info", "warn", "error", "assert", "dir",
+ "dirxml", "group", "groupEnd", "time", "timeEnd", "count", "trace",
+ "profile", "profileEnd"];
+ window.console = {};
+ for (var i = 0; i < names.length; ++i)
+ window.console[names[i]] = function() {};
+}
+ */
+
+/**
+ * small helper function to urldecode strings
+ */
+jQuery.urldecode = function(x) {
+ return decodeURIComponent(x).replace(/\+/g, ' ');
+};
+
+/**
+ * small helper function to urlencode strings
+ */
+jQuery.urlencode = encodeURIComponent;
+
+/**
+ * This function returns the parsed url parameters of the
+ * current request. Multiple values per key are supported,
+ * it will always return arrays of strings for the value parts.
+ */
+jQuery.getQueryParameters = function(s) {
+ if (typeof s == 'undefined')
+ s = document.location.search;
+ var parts = s.substr(s.indexOf('?') + 1).split('&');
+ var result = {};
+ for (var i = 0; i < parts.length; i++) {
+ var tmp = parts[i].split('=', 2);
+ var key = jQuery.urldecode(tmp[0]);
+ var value = jQuery.urldecode(tmp[1]);
+ if (key in result)
+ result[key].push(value);
+ else
+ result[key] = [value];
+ }
+ return result;
+};
+
+/**
+ * highlight a given string on a jquery object by wrapping it in
+ * span elements with the given class name.
+ */
+jQuery.fn.highlightText = function(text, className) {
+ function highlight(node) {
+ if (node.nodeType == 3) {
+ var val = node.nodeValue;
+ var pos = val.toLowerCase().indexOf(text);
+ if (pos >= 0 && !jQuery(node.parentNode).hasClass(className)) {
+ var span = document.createElement("span");
+ span.className = className;
+ span.appendChild(document.createTextNode(val.substr(pos, text.length)));
+ node.parentNode.insertBefore(span, node.parentNode.insertBefore(
+ document.createTextNode(val.substr(pos + text.length)),
+ node.nextSibling));
+ node.nodeValue = val.substr(0, pos);
+ }
+ }
+ else if (!jQuery(node).is("button, select, textarea")) {
+ jQuery.each(node.childNodes, function() {
+ highlight(this);
+ });
+ }
+ }
+ return this.each(function() {
+ highlight(this);
+ });
+};
+
+/**
+ * Small JavaScript module for the documentation.
+ */
+var Documentation = {
+
+ init : function() {
+ this.fixFirefoxAnchorBug();
+ this.highlightSearchWords();
+ this.initIndexTable();
+ },
+
+ /**
+ * i18n support
+ */
+ TRANSLATIONS : {},
+ PLURAL_EXPR : function(n) { return n == 1 ? 0 : 1; },
+ LOCALE : 'unknown',
+
+ // gettext and ngettext don't access this so that the functions
+ // can safely bound to a different name (_ = Documentation.gettext)
+ gettext : function(string) {
+ var translated = Documentation.TRANSLATIONS[string];
+ if (typeof translated == 'undefined')
+ return string;
+ return (typeof translated == 'string') ? translated : translated[0];
+ },
+
+ ngettext : function(singular, plural, n) {
+ var translated = Documentation.TRANSLATIONS[singular];
+ if (typeof translated == 'undefined')
+ return (n == 1) ? singular : plural;
+ return translated[Documentation.PLURALEXPR(n)];
+ },
+
+ addTranslations : function(catalog) {
+ for (var key in catalog.messages)
+ this.TRANSLATIONS[key] = catalog.messages[key];
+ this.PLURAL_EXPR = new Function('n', 'return +(' + catalog.plural_expr + ')');
+ this.LOCALE = catalog.locale;
+ },
+
+ /**
+ * add context elements like header anchor links
+ */
+ addContextElements : function() {
+ $('div[id] > :header:first').each(function() {
+ $('<a class="headerlink">\u00B6</a>').
+ attr('href', '#' + this.id).
+ attr('title', _('Permalink to this headline')).
+ appendTo(this);
+ });
+ $('dt[id]').each(function() {
+ $('<a class="headerlink">\u00B6</a>').
+ attr('href', '#' + this.id).
+ attr('title', _('Permalink to this definition')).
+ appendTo(this);
+ });
+ },
+
+ /**
+ * workaround a firefox stupidity
+ */
+ fixFirefoxAnchorBug : function() {
+ if (document.location.hash && $.browser.mozilla)
+ window.setTimeout(function() {
+ document.location.href += '';
+ }, 10);
+ },
+
+ /**
+ * highlight the search words provided in the url in the text
+ */
+ highlightSearchWords : function() {
+ var params = $.getQueryParameters();
+ var terms = (params.highlight) ? params.highlight[0].split(/\s+/) : [];
+ if (terms.length) {
+ var body = $('div.body');
+ if (!body.length) {
+ body = $('body');
+ }
+ window.setTimeout(function() {
+ $.each(terms, function() {
+ body.highlightText(this.toLowerCase(), 'highlighted');
+ });
+ }, 10);
+ $('<p class="highlight-link"><a href="javascript:Documentation.' +
+ 'hideSearchWords()">' + _('Hide Search Matches') + '</a></p>')
+ .appendTo($('#searchbox'));
+ }
+ },
+
+ /**
+ * init the domain index toggle buttons
+ */
+ initIndexTable : function() {
+ var togglers = $('img.toggler').click(function() {
+ var src = $(this).attr('src');
+ var idnum = $(this).attr('id').substr(7);
+ $('tr.cg-' + idnum).toggle();
+ if (src.substr(-9) == 'minus.png')
+ $(this).attr('src', src.substr(0, src.length-9) + 'plus.png');
+ else
+ $(this).attr('src', src.substr(0, src.length-8) + 'minus.png');
+ }).css('display', '');
+ if (DOCUMENTATION_OPTIONS.COLLAPSE_INDEX) {
+ togglers.click();
+ }
+ },
+
+ /**
+ * helper function to hide the search marks again
+ */
+ hideSearchWords : function() {
+ $('#searchbox .highlight-link').fadeOut(300);
+ $('span.highlighted').removeClass('highlighted');
+ },
+
+ /**
+ * make the url absolute
+ */
+ makeURL : function(relativeURL) {
+ return DOCUMENTATION_OPTIONS.URL_ROOT + '/' + relativeURL;
+ },
+
+ /**
+ * get the current relative url
+ */
+ getCurrentURL : function() {
+ var path = document.location.pathname;
+ var parts = path.split(/\//);
+ $.each(DOCUMENTATION_OPTIONS.URL_ROOT.split(/\//), function() {
+ if (this == '..')
+ parts.pop();
+ });
+ var url = parts.join('/');
+ return path.substring(url.lastIndexOf('/') + 1, path.length - 1);
+ }
+};
+
+// quick alias for translations
+_ = Documentation.gettext;
+
+$(document).ready(function() {
+ Documentation.init();
+});
Added: www-releases/trunk/3.9.1/tools/clang/docs/_static/down-pressed.png
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svn:mime-type = image/png
Added: www-releases/trunk/3.9.1/tools/clang/docs/_static/haiku.css
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_static/haiku.css?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_static/haiku.css (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_static/haiku.css Thu Dec 22 14:04:03 2016
@@ -0,0 +1,371 @@
+/*
+ * haiku.css_t
+ * ~~~~~~~~~~~
+ *
+ * Sphinx stylesheet -- haiku theme.
+ *
+ * Adapted from http://haiku-os.org/docs/Haiku-doc.css.
+ * Original copyright message:
+ *
+ * Copyright 2008-2009, Haiku. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ * Francois Revol <revol at free.fr>
+ * Stephan Assmus <superstippi at gmx.de>
+ * Braden Ewing <brewin at gmail.com>
+ * Humdinger <humdingerb at gmail.com>
+ *
+ * :copyright: Copyright 2007-2014 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+ at import url("basic.css");
+
+html {
+ margin: 0px;
+ padding: 0px;
+ background: #FFF url(bg-page.png) top left repeat-x;
+}
+
+body {
+ line-height: 1.5;
+ margin: auto;
+ padding: 0px;
+ font-family: "DejaVu Sans", Arial, Helvetica, sans-serif;
+ min-width: 59em;
+ max-width: 70em;
+ color: #333333;
+}
+
+div.footer {
+ padding: 8px;
+ font-size: 11px;
+ text-align: center;
+ letter-spacing: 0.5px;
+}
+
+/* link colors and text decoration */
+
+a:link {
+ font-weight: bold;
+ text-decoration: none;
+ color: #dc3c01;
+}
+
+a:visited {
+ font-weight: bold;
+ text-decoration: none;
+ color: #892601;
+}
+
+a:hover, a:active {
+ text-decoration: underline;
+ color: #ff4500;
+}
+
+/* Some headers act as anchors, don't give them a hover effect */
+
+h1 a:hover, a:active {
+ text-decoration: none;
+ color: #0c3762;
+}
+
+h2 a:hover, a:active {
+ text-decoration: none;
+ color: #0c3762;
+}
+
+h3 a:hover, a:active {
+ text-decoration: none;
+ color: #0c3762;
+}
+
+h4 a:hover, a:active {
+ text-decoration: none;
+ color: #0c3762;
+}
+
+a.headerlink {
+ color: #a7ce38;
+ padding-left: 5px;
+}
+
+a.headerlink:hover {
+ color: #a7ce38;
+}
+
+/* basic text elements */
+
+div.content {
+ margin-top: 20px;
+ margin-left: 40px;
+ margin-right: 40px;
+ margin-bottom: 50px;
+ font-size: 0.9em;
+}
+
+/* heading and navigation */
+
+div.header {
+ position: relative;
+ left: 0px;
+ top: 0px;
+ height: 85px;
+ /* background: #eeeeee; */
+ padding: 0 40px;
+}
+div.header h1 {
+ font-size: 1.6em;
+ font-weight: normal;
+ letter-spacing: 1px;
+ color: #0c3762;
+ border: 0;
+ margin: 0;
+ padding-top: 15px;
+}
+div.header h1 a {
+ font-weight: normal;
+ color: #0c3762;
+}
+div.header h2 {
+ font-size: 1.3em;
+ font-weight: normal;
+ letter-spacing: 1px;
+ text-transform: uppercase;
+ color: #aaa;
+ border: 0;
+ margin-top: -3px;
+ padding: 0;
+}
+
+div.header img.rightlogo {
+ float: right;
+}
+
+
+div.title {
+ font-size: 1.3em;
+ font-weight: bold;
+ color: #0c3762;
+ border-bottom: dotted thin #e0e0e0;
+ margin-bottom: 25px;
+}
+div.topnav {
+ /* background: #e0e0e0; */
+}
+div.topnav p {
+ margin-top: 0;
+ margin-left: 40px;
+ margin-right: 40px;
+ margin-bottom: 0px;
+ text-align: right;
+ font-size: 0.8em;
+}
+div.bottomnav {
+ background: #eeeeee;
+}
+div.bottomnav p {
+ margin-right: 40px;
+ text-align: right;
+ font-size: 0.8em;
+}
+
+a.uplink {
+ font-weight: normal;
+}
+
+
+/* contents box */
+
+table.index {
+ margin: 0px 0px 30px 30px;
+ padding: 1px;
+ border-width: 1px;
+ border-style: dotted;
+ border-color: #e0e0e0;
+}
+table.index tr.heading {
+ background-color: #e0e0e0;
+ text-align: center;
+ font-weight: bold;
+ font-size: 1.1em;
+}
+table.index tr.index {
+ background-color: #eeeeee;
+}
+table.index td {
+ padding: 5px 20px;
+}
+
+table.index a:link, table.index a:visited {
+ font-weight: normal;
+ text-decoration: none;
+ color: #dc3c01;
+}
+table.index a:hover, table.index a:active {
+ text-decoration: underline;
+ color: #ff4500;
+}
+
+
+/* Haiku User Guide styles and layout */
+
+/* Rounded corner boxes */
+/* Common declarations */
+div.admonition {
+ -webkit-border-radius: 10px;
+ -khtml-border-radius: 10px;
+ -moz-border-radius: 10px;
+ border-radius: 10px;
+ border-style: dotted;
+ border-width: thin;
+ border-color: #dcdcdc;
+ padding: 10px 15px 10px 15px;
+ margin-bottom: 15px;
+ margin-top: 15px;
+}
+div.note {
+ padding: 10px 15px 10px 80px;
+ background: #e4ffde url(alert_info_32.png) 15px 15px no-repeat;
+ min-height: 42px;
+}
+div.warning {
+ padding: 10px 15px 10px 80px;
+ background: #fffbc6 url(alert_warning_32.png) 15px 15px no-repeat;
+ min-height: 42px;
+}
+div.seealso {
+ background: #e4ffde;
+}
+
+/* More layout and styles */
+h1 {
+ font-size: 1.3em;
+ font-weight: bold;
+ color: #0c3762;
+ border-bottom: dotted thin #e0e0e0;
+ margin-top: 30px;
+}
+
+h2 {
+ font-size: 1.2em;
+ font-weight: normal;
+ color: #0c3762;
+ border-bottom: dotted thin #e0e0e0;
+ margin-top: 30px;
+}
+
+h3 {
+ font-size: 1.1em;
+ font-weight: normal;
+ color: #0c3762;
+ margin-top: 30px;
+}
+
+h4 {
+ font-size: 1.0em;
+ font-weight: normal;
+ color: #0c3762;
+ margin-top: 30px;
+}
+
+p {
+ text-align: justify;
+}
+
+p.last {
+ margin-bottom: 0;
+}
+
+ol {
+ padding-left: 20px;
+}
+
+ul {
+ padding-left: 5px;
+ margin-top: 3px;
+}
+
+li {
+ line-height: 1.3;
+}
+
+div.content ul > li {
+ -moz-background-clip:border;
+ -moz-background-inline-policy:continuous;
+ -moz-background-origin:padding;
+ background: transparent url(bullet_orange.png) no-repeat scroll left 0.45em;
+ list-style-image: none;
+ list-style-type: none;
+ padding: 0 0 0 1.666em;
+ margin-bottom: 3px;
+}
+
+td {
+ vertical-align: top;
+}
+
+tt {
+ background-color: #e2e2e2;
+ font-size: 1.0em;
+ font-family: monospace;
+}
+
+pre {
+ border-color: #0c3762;
+ border-style: dotted;
+ border-width: thin;
+ margin: 0 0 12px 0;
+ padding: 0.8em;
+ background-color: #f0f0f0;
+}
+
+hr {
+ border-top: 1px solid #ccc;
+ border-bottom: 0;
+ border-right: 0;
+ border-left: 0;
+ margin-bottom: 10px;
+ margin-top: 20px;
+}
+
+/* printer only pretty stuff */
+ at media print {
+ .noprint {
+ display: none;
+ }
+ /* for acronyms we want their definitions inlined at print time */
+ acronym[title]:after {
+ font-size: small;
+ content: " (" attr(title) ")";
+ font-style: italic;
+ }
+ /* and not have mozilla dotted underline */
+ acronym {
+ border: none;
+ }
+ div.topnav, div.bottomnav, div.header, table.index {
+ display: none;
+ }
+ div.content {
+ margin: 0px;
+ padding: 0px;
+ }
+ html {
+ background: #FFF;
+ }
+}
+
+.viewcode-back {
+ font-family: "DejaVu Sans", Arial, Helvetica, sans-serif;
+}
+
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Added: www-releases/trunk/3.9.1/tools/clang/docs/_static/jquery.js
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_static/jquery.js?rev=290368&view=auto
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+/*
+ * searchtools.js_t
+ * ~~~~~~~~~~~~~~~~
+ *
+ * Sphinx JavaScript utilties for the full-text search.
+ *
+ * :copyright: Copyright 2007-2014 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+
+/**
+ * Porter Stemmer
+ */
+var Stemmer = function() {
+
+ var step2list = {
+ ational: 'ate',
+ tional: 'tion',
+ enci: 'ence',
+ anci: 'ance',
+ izer: 'ize',
+ bli: 'ble',
+ alli: 'al',
+ entli: 'ent',
+ eli: 'e',
+ ousli: 'ous',
+ ization: 'ize',
+ ation: 'ate',
+ ator: 'ate',
+ alism: 'al',
+ iveness: 'ive',
+ fulness: 'ful',
+ ousness: 'ous',
+ aliti: 'al',
+ iviti: 'ive',
+ biliti: 'ble',
+ logi: 'log'
+ };
+
+ var step3list = {
+ icate: 'ic',
+ ative: '',
+ alize: 'al',
+ iciti: 'ic',
+ ical: 'ic',
+ ful: '',
+ ness: ''
+ };
+
+ var c = "[^aeiou]"; // consonant
+ var v = "[aeiouy]"; // vowel
+ var C = c + "[^aeiouy]*"; // consonant sequence
+ var V = v + "[aeiou]*"; // vowel sequence
+
+ var mgr0 = "^(" + C + ")?" + V + C; // [C]VC... is m>0
+ var meq1 = "^(" + C + ")?" + V + C + "(" + V + ")?$"; // [C]VC[V] is m=1
+ var mgr1 = "^(" + C + ")?" + V + C + V + C; // [C]VCVC... is m>1
+ var s_v = "^(" + C + ")?" + v; // vowel in stem
+
+ this.stemWord = function (w) {
+ var stem;
+ var suffix;
+ var firstch;
+ var origword = w;
+
+ if (w.length < 3)
+ return w;
+
+ var re;
+ var re2;
+ var re3;
+ var re4;
+
+ firstch = w.substr(0,1);
+ if (firstch == "y")
+ w = firstch.toUpperCase() + w.substr(1);
+
+ // Step 1a
+ re = /^(.+?)(ss|i)es$/;
+ re2 = /^(.+?)([^s])s$/;
+
+ if (re.test(w))
+ w = w.replace(re,"$1$2");
+ else if (re2.test(w))
+ w = w.replace(re2,"$1$2");
+
+ // Step 1b
+ re = /^(.+?)eed$/;
+ re2 = /^(.+?)(ed|ing)$/;
+ if (re.test(w)) {
+ var fp = re.exec(w);
+ re = new RegExp(mgr0);
+ if (re.test(fp[1])) {
+ re = /.$/;
+ w = w.replace(re,"");
+ }
+ }
+ else if (re2.test(w)) {
+ var fp = re2.exec(w);
+ stem = fp[1];
+ re2 = new RegExp(s_v);
+ if (re2.test(stem)) {
+ w = stem;
+ re2 = /(at|bl|iz)$/;
+ re3 = new RegExp("([^aeiouylsz])\\1$");
+ re4 = new RegExp("^" + C + v + "[^aeiouwxy]$");
+ if (re2.test(w))
+ w = w + "e";
+ else if (re3.test(w)) {
+ re = /.$/;
+ w = w.replace(re,"");
+ }
+ else if (re4.test(w))
+ w = w + "e";
+ }
+ }
+
+ // Step 1c
+ re = /^(.+?)y$/;
+ if (re.test(w)) {
+ var fp = re.exec(w);
+ stem = fp[1];
+ re = new RegExp(s_v);
+ if (re.test(stem))
+ w = stem + "i";
+ }
+
+ // Step 2
+ re = /^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|biliti|logi)$/;
+ if (re.test(w)) {
+ var fp = re.exec(w);
+ stem = fp[1];
+ suffix = fp[2];
+ re = new RegExp(mgr0);
+ if (re.test(stem))
+ w = stem + step2list[suffix];
+ }
+
+ // Step 3
+ re = /^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/;
+ if (re.test(w)) {
+ var fp = re.exec(w);
+ stem = fp[1];
+ suffix = fp[2];
+ re = new RegExp(mgr0);
+ if (re.test(stem))
+ w = stem + step3list[suffix];
+ }
+
+ // Step 4
+ re = /^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|iti|ous|ive|ize)$/;
+ re2 = /^(.+?)(s|t)(ion)$/;
+ if (re.test(w)) {
+ var fp = re.exec(w);
+ stem = fp[1];
+ re = new RegExp(mgr1);
+ if (re.test(stem))
+ w = stem;
+ }
+ else if (re2.test(w)) {
+ var fp = re2.exec(w);
+ stem = fp[1] + fp[2];
+ re2 = new RegExp(mgr1);
+ if (re2.test(stem))
+ w = stem;
+ }
+
+ // Step 5
+ re = /^(.+?)e$/;
+ if (re.test(w)) {
+ var fp = re.exec(w);
+ stem = fp[1];
+ re = new RegExp(mgr1);
+ re2 = new RegExp(meq1);
+ re3 = new RegExp("^" + C + v + "[^aeiouwxy]$");
+ if (re.test(stem) || (re2.test(stem) && !(re3.test(stem))))
+ w = stem;
+ }
+ re = /ll$/;
+ re2 = new RegExp(mgr1);
+ if (re.test(w) && re2.test(w)) {
+ re = /.$/;
+ w = w.replace(re,"");
+ }
+
+ // and turn initial Y back to y
+ if (firstch == "y")
+ w = firstch.toLowerCase() + w.substr(1);
+ return w;
+ }
+}
+
+
+
+/**
+ * Simple result scoring code.
+ */
+var Scorer = {
+ // Implement the following function to further tweak the score for each result
+ // The function takes a result array [filename, title, anchor, descr, score]
+ // and returns the new score.
+ /*
+ score: function(result) {
+ return result[4];
+ },
+ */
+
+ // query matches the full name of an object
+ objNameMatch: 11,
+ // or matches in the last dotted part of the object name
+ objPartialMatch: 6,
+ // Additive scores depending on the priority of the object
+ objPrio: {0: 15, // used to be importantResults
+ 1: 5, // used to be objectResults
+ 2: -5}, // used to be unimportantResults
+ // Used when the priority is not in the mapping.
+ objPrioDefault: 0,
+
+ // query found in title
+ title: 15,
+ // query found in terms
+ term: 5
+};
+
+
+/**
+ * Search Module
+ */
+var Search = {
+
+ _index : null,
+ _queued_query : null,
+ _pulse_status : -1,
+
+ init : function() {
+ var params = $.getQueryParameters();
+ if (params.q) {
+ var query = params.q[0];
+ $('input[name="q"]')[0].value = query;
+ this.performSearch(query);
+ }
+ },
+
+ loadIndex : function(url) {
+ $.ajax({type: "GET", url: url, data: null,
+ dataType: "script", cache: true,
+ complete: function(jqxhr, textstatus) {
+ if (textstatus != "success") {
+ document.getElementById("searchindexloader").src = url;
+ }
+ }});
+ },
+
+ setIndex : function(index) {
+ var q;
+ this._index = index;
+ if ((q = this._queued_query) !== null) {
+ this._queued_query = null;
+ Search.query(q);
+ }
+ },
+
+ hasIndex : function() {
+ return this._index !== null;
+ },
+
+ deferQuery : function(query) {
+ this._queued_query = query;
+ },
+
+ stopPulse : function() {
+ this._pulse_status = 0;
+ },
+
+ startPulse : function() {
+ if (this._pulse_status >= 0)
+ return;
+ function pulse() {
+ var i;
+ Search._pulse_status = (Search._pulse_status + 1) % 4;
+ var dotString = '';
+ for (i = 0; i < Search._pulse_status; i++)
+ dotString += '.';
+ Search.dots.text(dotString);
+ if (Search._pulse_status > -1)
+ window.setTimeout(pulse, 500);
+ }
+ pulse();
+ },
+
+ /**
+ * perform a search for something (or wait until index is loaded)
+ */
+ performSearch : function(query) {
+ // create the required interface elements
+ this.out = $('#search-results');
+ this.title = $('<h2>' + _('Searching') + '</h2>').appendTo(this.out);
+ this.dots = $('<span></span>').appendTo(this.title);
+ this.status = $('<p style="display: none"></p>').appendTo(this.out);
+ this.output = $('<ul class="search"/>').appendTo(this.out);
+
+ $('#search-progress').text(_('Preparing search...'));
+ this.startPulse();
+
+ // index already loaded, the browser was quick!
+ if (this.hasIndex())
+ this.query(query);
+ else
+ this.deferQuery(query);
+ },
+
+ /**
+ * execute search (requires search index to be loaded)
+ */
+ query : function(query) {
+ var i;
+ var stopwords = ["a","and","are","as","at","be","but","by","for","if","in","into","is","it","near","no","not","of","on","or","such","that","the","their","then","there","these","they","this","to","was","will","with"];
+
+ // stem the searchterms and add them to the correct list
+ var stemmer = new Stemmer();
+ var searchterms = [];
+ var excluded = [];
+ var hlterms = [];
+ var tmp = query.split(/\s+/);
+ var objectterms = [];
+ for (i = 0; i < tmp.length; i++) {
+ if (tmp[i] !== "") {
+ objectterms.push(tmp[i].toLowerCase());
+ }
+
+ if ($u.indexOf(stopwords, tmp[i].toLowerCase()) != -1 || tmp[i].match(/^\d+$/) ||
+ tmp[i] === "") {
+ // skip this "word"
+ continue;
+ }
+ // stem the word
+ var word = stemmer.stemWord(tmp[i].toLowerCase());
+ var toAppend;
+ // select the correct list
+ if (word[0] == '-') {
+ toAppend = excluded;
+ word = word.substr(1);
+ }
+ else {
+ toAppend = searchterms;
+ hlterms.push(tmp[i].toLowerCase());
+ }
+ // only add if not already in the list
+ if (!$u.contains(toAppend, word))
+ toAppend.push(word);
+ }
+ var highlightstring = '?highlight=' + $.urlencode(hlterms.join(" "));
+
+ // console.debug('SEARCH: searching for:');
+ // console.info('required: ', searchterms);
+ // console.info('excluded: ', excluded);
+
+ // prepare search
+ var terms = this._index.terms;
+ var titleterms = this._index.titleterms;
+
+ // array of [filename, title, anchor, descr, score]
+ var results = [];
+ $('#search-progress').empty();
+
+ // lookup as object
+ for (i = 0; i < objectterms.length; i++) {
+ var others = [].concat(objectterms.slice(0, i),
+ objectterms.slice(i+1, objectterms.length));
+ results = results.concat(this.performObjectSearch(objectterms[i], others));
+ }
+
+ // lookup as search terms in fulltext
+ results = results.concat(this.performTermsSearch(searchterms, excluded, terms, Scorer.term))
+ .concat(this.performTermsSearch(searchterms, excluded, titleterms, Scorer.title));
+
+ // let the scorer override scores with a custom scoring function
+ if (Scorer.score) {
+ for (i = 0; i < results.length; i++)
+ results[i][4] = Scorer.score(results[i]);
+ }
+
+ // now sort the results by score (in opposite order of appearance, since the
+ // display function below uses pop() to retrieve items) and then
+ // alphabetically
+ results.sort(function(a, b) {
+ var left = a[4];
+ var right = b[4];
+ if (left > right) {
+ return 1;
+ } else if (left < right) {
+ return -1;
+ } else {
+ // same score: sort alphabetically
+ left = a[1].toLowerCase();
+ right = b[1].toLowerCase();
+ return (left > right) ? -1 : ((left < right) ? 1 : 0);
+ }
+ });
+
+ // for debugging
+ //Search.lastresults = results.slice(); // a copy
+ //console.info('search results:', Search.lastresults);
+
+ // print the results
+ var resultCount = results.length;
+ function displayNextItem() {
+ // results left, load the summary and display it
+ if (results.length) {
+ var item = results.pop();
+ var listItem = $('<li style="display:none"></li>');
+ if (DOCUMENTATION_OPTIONS.FILE_SUFFIX === '') {
+ // dirhtml builder
+ var dirname = item[0] + '/';
+ if (dirname.match(/\/index\/$/)) {
+ dirname = dirname.substring(0, dirname.length-6);
+ } else if (dirname == 'index/') {
+ dirname = '';
+ }
+ listItem.append($('<a/>').attr('href',
+ DOCUMENTATION_OPTIONS.URL_ROOT + dirname +
+ highlightstring + item[2]).html(item[1]));
+ } else {
+ // normal html builders
+ listItem.append($('<a/>').attr('href',
+ item[0] + DOCUMENTATION_OPTIONS.FILE_SUFFIX +
+ highlightstring + item[2]).html(item[1]));
+ }
+ if (item[3]) {
+ listItem.append($('<span> (' + item[3] + ')</span>'));
+ Search.output.append(listItem);
+ listItem.slideDown(5, function() {
+ displayNextItem();
+ });
+ } else if (DOCUMENTATION_OPTIONS.HAS_SOURCE) {
+ $.ajax({url: DOCUMENTATION_OPTIONS.URL_ROOT + '_sources/' + item[0] + '.txt',
+ dataType: "text",
+ complete: function(jqxhr, textstatus) {
+ var data = jqxhr.responseText;
+ if (data !== '') {
+ listItem.append(Search.makeSearchSummary(data, searchterms, hlterms));
+ }
+ Search.output.append(listItem);
+ listItem.slideDown(5, function() {
+ displayNextItem();
+ });
+ }});
+ } else {
+ // no source available, just display title
+ Search.output.append(listItem);
+ listItem.slideDown(5, function() {
+ displayNextItem();
+ });
+ }
+ }
+ // search finished, update title and status message
+ else {
+ Search.stopPulse();
+ Search.title.text(_('Search Results'));
+ if (!resultCount)
+ Search.status.text(_('Your search did not match any documents. Please make sure that all words are spelled correctly and that you\'ve selected enough categories.'));
+ else
+ Search.status.text(_('Search finished, found %s page(s) matching the search query.').replace('%s', resultCount));
+ Search.status.fadeIn(500);
+ }
+ }
+ displayNextItem();
+ },
+
+ /**
+ * search for object names
+ */
+ performObjectSearch : function(object, otherterms) {
+ var filenames = this._index.filenames;
+ var objects = this._index.objects;
+ var objnames = this._index.objnames;
+ var titles = this._index.titles;
+
+ var i;
+ var results = [];
+
+ for (var prefix in objects) {
+ for (var name in objects[prefix]) {
+ var fullname = (prefix ? prefix + '.' : '') + name;
+ if (fullname.toLowerCase().indexOf(object) > -1) {
+ var score = 0;
+ var parts = fullname.split('.');
+ // check for different match types: exact matches of full name or
+ // "last name" (i.e. last dotted part)
+ if (fullname == object || parts[parts.length - 1] == object) {
+ score += Scorer.objNameMatch;
+ // matches in last name
+ } else if (parts[parts.length - 1].indexOf(object) > -1) {
+ score += Scorer.objPartialMatch;
+ }
+ var match = objects[prefix][name];
+ var objname = objnames[match[1]][2];
+ var title = titles[match[0]];
+ // If more than one term searched for, we require other words to be
+ // found in the name/title/description
+ if (otherterms.length > 0) {
+ var haystack = (prefix + ' ' + name + ' ' +
+ objname + ' ' + title).toLowerCase();
+ var allfound = true;
+ for (i = 0; i < otherterms.length; i++) {
+ if (haystack.indexOf(otherterms[i]) == -1) {
+ allfound = false;
+ break;
+ }
+ }
+ if (!allfound) {
+ continue;
+ }
+ }
+ var descr = objname + _(', in ') + title;
+
+ var anchor = match[3];
+ if (anchor === '')
+ anchor = fullname;
+ else if (anchor == '-')
+ anchor = objnames[match[1]][1] + '-' + fullname;
+ // add custom score for some objects according to scorer
+ if (Scorer.objPrio.hasOwnProperty(match[2])) {
+ score += Scorer.objPrio[match[2]];
+ } else {
+ score += Scorer.objPrioDefault;
+ }
+ results.push([filenames[match[0]], fullname, '#'+anchor, descr, score]);
+ }
+ }
+ }
+
+ return results;
+ },
+
+ /**
+ * search for full-text terms in the index
+ */
+ performTermsSearch : function(searchterms, excluded, terms, score) {
+ var filenames = this._index.filenames;
+ var titles = this._index.titles;
+
+ var i, j, file, files;
+ var fileMap = {};
+ var results = [];
+
+ // perform the search on the required terms
+ for (i = 0; i < searchterms.length; i++) {
+ var word = searchterms[i];
+ // no match but word was a required one
+ if ((files = terms[word]) === undefined)
+ break;
+ if (files.length === undefined) {
+ files = [files];
+ }
+ // create the mapping
+ for (j = 0; j < files.length; j++) {
+ file = files[j];
+ if (file in fileMap)
+ fileMap[file].push(word);
+ else
+ fileMap[file] = [word];
+ }
+ }
+
+ // now check if the files don't contain excluded terms
+ for (file in fileMap) {
+ var valid = true;
+
+ // check if all requirements are matched
+ if (fileMap[file].length != searchterms.length)
+ continue;
+
+ // ensure that none of the excluded terms is in the search result
+ for (i = 0; i < excluded.length; i++) {
+ if (terms[excluded[i]] == file ||
+ $u.contains(terms[excluded[i]] || [], file)) {
+ valid = false;
+ break;
+ }
+ }
+
+ // if we have still a valid result we can add it to the result list
+ if (valid) {
+ results.push([filenames[file], titles[file], '', null, score]);
+ }
+ }
+ return results;
+ },
+
+ /**
+ * helper function to return a node containing the
+ * search summary for a given text. keywords is a list
+ * of stemmed words, hlwords is the list of normal, unstemmed
+ * words. the first one is used to find the occurance, the
+ * latter for highlighting it.
+ */
+ makeSearchSummary : function(text, keywords, hlwords) {
+ var textLower = text.toLowerCase();
+ var start = 0;
+ $.each(keywords, function() {
+ var i = textLower.indexOf(this.toLowerCase());
+ if (i > -1)
+ start = i;
+ });
+ start = Math.max(start - 120, 0);
+ var excerpt = ((start > 0) ? '...' : '') +
+ $.trim(text.substr(start, 240)) +
+ ((start + 240 - text.length) ? '...' : '');
+ var rv = $('<div class="context"></div>').text(excerpt);
+ $.each(hlwords, function() {
+ rv = rv.highlightText(this, 'highlighted');
+ });
+ return rv;
+ }
+};
+
+$(document).ready(function() {
+ Search.init();
+});
\ No newline at end of file
Added: www-releases/trunk/3.9.1/tools/clang/docs/_static/underscore.js
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_static/underscore.js?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_static/underscore.js (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_static/underscore.js Thu Dec 22 14:04:03 2016
@@ -0,0 +1,31 @@
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+// (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore is freely distributable under the MIT license.
+// Portions of Underscore are inspired or borrowed from Prototype,
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+// For all details and documentation:
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+function(){var a=i.call(arguments);H.call(a,this._wrapped);return v(c.apply(b,a),this._chain)}};b.mixin(b);j("pop,push,reverse,shift,sort,splice,unshift".split(","),function(a){var b=k[a];m.prototype[a]=function(){var d=this._wrapped;b.apply(d,arguments);var e=d.length;(a=="shift"||a=="splice")&&e===0&&delete d[0];return v(d,this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];m.prototype[a]=function(){return v(b.apply(this._wrapped,arguments),this._chain)}});m.prototype.chain=function(){this._chain=
+true;return this};m.prototype.value=function(){return this._wrapped}}).call(this);
Added: www-releases/trunk/3.9.1/tools/clang/docs/_static/up-pressed.png
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_static/up-pressed.png?rev=290368&view=auto
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Added: www-releases/trunk/3.9.1/tools/clang/docs/_static/up.png
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_static/up.png?rev=290368&view=auto
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Added: www-releases/trunk/3.9.1/tools/clang/docs/_static/websupport.js
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/_static/websupport.js?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/_static/websupport.js (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/_static/websupport.js Thu Dec 22 14:04:03 2016
@@ -0,0 +1,808 @@
+/*
+ * websupport.js
+ * ~~~~~~~~~~~~~
+ *
+ * sphinx.websupport utilties for all documentation.
+ *
+ * :copyright: Copyright 2007-2014 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+(function($) {
+ $.fn.autogrow = function() {
+ return this.each(function() {
+ var textarea = this;
+
+ $.fn.autogrow.resize(textarea);
+
+ $(textarea)
+ .focus(function() {
+ textarea.interval = setInterval(function() {
+ $.fn.autogrow.resize(textarea);
+ }, 500);
+ })
+ .blur(function() {
+ clearInterval(textarea.interval);
+ });
+ });
+ };
+
+ $.fn.autogrow.resize = function(textarea) {
+ var lineHeight = parseInt($(textarea).css('line-height'), 10);
+ var lines = textarea.value.split('\n');
+ var columns = textarea.cols;
+ var lineCount = 0;
+ $.each(lines, function() {
+ lineCount += Math.ceil(this.length / columns) || 1;
+ });
+ var height = lineHeight * (lineCount + 1);
+ $(textarea).css('height', height);
+ };
+})(jQuery);
+
+(function($) {
+ var comp, by;
+
+ function init() {
+ initEvents();
+ initComparator();
+ }
+
+ function initEvents() {
+ $('a.comment-close').live("click", function(event) {
+ event.preventDefault();
+ hide($(this).attr('id').substring(2));
+ });
+ $('a.vote').live("click", function(event) {
+ event.preventDefault();
+ handleVote($(this));
+ });
+ $('a.reply').live("click", function(event) {
+ event.preventDefault();
+ openReply($(this).attr('id').substring(2));
+ });
+ $('a.close-reply').live("click", function(event) {
+ event.preventDefault();
+ closeReply($(this).attr('id').substring(2));
+ });
+ $('a.sort-option').live("click", function(event) {
+ event.preventDefault();
+ handleReSort($(this));
+ });
+ $('a.show-proposal').live("click", function(event) {
+ event.preventDefault();
+ showProposal($(this).attr('id').substring(2));
+ });
+ $('a.hide-proposal').live("click", function(event) {
+ event.preventDefault();
+ hideProposal($(this).attr('id').substring(2));
+ });
+ $('a.show-propose-change').live("click", function(event) {
+ event.preventDefault();
+ showProposeChange($(this).attr('id').substring(2));
+ });
+ $('a.hide-propose-change').live("click", function(event) {
+ event.preventDefault();
+ hideProposeChange($(this).attr('id').substring(2));
+ });
+ $('a.accept-comment').live("click", function(event) {
+ event.preventDefault();
+ acceptComment($(this).attr('id').substring(2));
+ });
+ $('a.delete-comment').live("click", function(event) {
+ event.preventDefault();
+ deleteComment($(this).attr('id').substring(2));
+ });
+ $('a.comment-markup').live("click", function(event) {
+ event.preventDefault();
+ toggleCommentMarkupBox($(this).attr('id').substring(2));
+ });
+ }
+
+ /**
+ * Set comp, which is a comparator function used for sorting and
+ * inserting comments into the list.
+ */
+ function setComparator() {
+ // If the first three letters are "asc", sort in ascending order
+ // and remove the prefix.
+ if (by.substring(0,3) == 'asc') {
+ var i = by.substring(3);
+ comp = function(a, b) { return a[i] - b[i]; };
+ } else {
+ // Otherwise sort in descending order.
+ comp = function(a, b) { return b[by] - a[by]; };
+ }
+
+ // Reset link styles and format the selected sort option.
+ $('a.sel').attr('href', '#').removeClass('sel');
+ $('a.by' + by).removeAttr('href').addClass('sel');
+ }
+
+ /**
+ * Create a comp function. If the user has preferences stored in
+ * the sortBy cookie, use those, otherwise use the default.
+ */
+ function initComparator() {
+ by = 'rating'; // Default to sort by rating.
+ // If the sortBy cookie is set, use that instead.
+ if (document.cookie.length > 0) {
+ var start = document.cookie.indexOf('sortBy=');
+ if (start != -1) {
+ start = start + 7;
+ var end = document.cookie.indexOf(";", start);
+ if (end == -1) {
+ end = document.cookie.length;
+ by = unescape(document.cookie.substring(start, end));
+ }
+ }
+ }
+ setComparator();
+ }
+
+ /**
+ * Show a comment div.
+ */
+ function show(id) {
+ $('#ao' + id).hide();
+ $('#ah' + id).show();
+ var context = $.extend({id: id}, opts);
+ var popup = $(renderTemplate(popupTemplate, context)).hide();
+ popup.find('textarea[name="proposal"]').hide();
+ popup.find('a.by' + by).addClass('sel');
+ var form = popup.find('#cf' + id);
+ form.submit(function(event) {
+ event.preventDefault();
+ addComment(form);
+ });
+ $('#s' + id).after(popup);
+ popup.slideDown('fast', function() {
+ getComments(id);
+ });
+ }
+
+ /**
+ * Hide a comment div.
+ */
+ function hide(id) {
+ $('#ah' + id).hide();
+ $('#ao' + id).show();
+ var div = $('#sc' + id);
+ div.slideUp('fast', function() {
+ div.remove();
+ });
+ }
+
+ /**
+ * Perform an ajax request to get comments for a node
+ * and insert the comments into the comments tree.
+ */
+ function getComments(id) {
+ $.ajax({
+ type: 'GET',
+ url: opts.getCommentsURL,
+ data: {node: id},
+ success: function(data, textStatus, request) {
+ var ul = $('#cl' + id);
+ var speed = 100;
+ $('#cf' + id)
+ .find('textarea[name="proposal"]')
+ .data('source', data.source);
+
+ if (data.comments.length === 0) {
+ ul.html('<li>No comments yet.</li>');
+ ul.data('empty', true);
+ } else {
+ // If there are comments, sort them and put them in the list.
+ var comments = sortComments(data.comments);
+ speed = data.comments.length * 100;
+ appendComments(comments, ul);
+ ul.data('empty', false);
+ }
+ $('#cn' + id).slideUp(speed + 200);
+ ul.slideDown(speed);
+ },
+ error: function(request, textStatus, error) {
+ showError('Oops, there was a problem retrieving the comments.');
+ },
+ dataType: 'json'
+ });
+ }
+
+ /**
+ * Add a comment via ajax and insert the comment into the comment tree.
+ */
+ function addComment(form) {
+ var node_id = form.find('input[name="node"]').val();
+ var parent_id = form.find('input[name="parent"]').val();
+ var text = form.find('textarea[name="comment"]').val();
+ var proposal = form.find('textarea[name="proposal"]').val();
+
+ if (text == '') {
+ showError('Please enter a comment.');
+ return;
+ }
+
+ // Disable the form that is being submitted.
+ form.find('textarea,input').attr('disabled', 'disabled');
+
+ // Send the comment to the server.
+ $.ajax({
+ type: "POST",
+ url: opts.addCommentURL,
+ dataType: 'json',
+ data: {
+ node: node_id,
+ parent: parent_id,
+ text: text,
+ proposal: proposal
+ },
+ success: function(data, textStatus, error) {
+ // Reset the form.
+ if (node_id) {
+ hideProposeChange(node_id);
+ }
+ form.find('textarea')
+ .val('')
+ .add(form.find('input'))
+ .removeAttr('disabled');
+ var ul = $('#cl' + (node_id || parent_id));
+ if (ul.data('empty')) {
+ $(ul).empty();
+ ul.data('empty', false);
+ }
+ insertComment(data.comment);
+ var ao = $('#ao' + node_id);
+ ao.find('img').attr({'src': opts.commentBrightImage});
+ if (node_id) {
+ // if this was a "root" comment, remove the commenting box
+ // (the user can get it back by reopening the comment popup)
+ $('#ca' + node_id).slideUp();
+ }
+ },
+ error: function(request, textStatus, error) {
+ form.find('textarea,input').removeAttr('disabled');
+ showError('Oops, there was a problem adding the comment.');
+ }
+ });
+ }
+
+ /**
+ * Recursively append comments to the main comment list and children
+ * lists, creating the comment tree.
+ */
+ function appendComments(comments, ul) {
+ $.each(comments, function() {
+ var div = createCommentDiv(this);
+ ul.append($(document.createElement('li')).html(div));
+ appendComments(this.children, div.find('ul.comment-children'));
+ // To avoid stagnating data, don't store the comments children in data.
+ this.children = null;
+ div.data('comment', this);
+ });
+ }
+
+ /**
+ * After adding a new comment, it must be inserted in the correct
+ * location in the comment tree.
+ */
+ function insertComment(comment) {
+ var div = createCommentDiv(comment);
+
+ // To avoid stagnating data, don't store the comments children in data.
+ comment.children = null;
+ div.data('comment', comment);
+
+ var ul = $('#cl' + (comment.node || comment.parent));
+ var siblings = getChildren(ul);
+
+ var li = $(document.createElement('li'));
+ li.hide();
+
+ // Determine where in the parents children list to insert this comment.
+ for(i=0; i < siblings.length; i++) {
+ if (comp(comment, siblings[i]) <= 0) {
+ $('#cd' + siblings[i].id)
+ .parent()
+ .before(li.html(div));
+ li.slideDown('fast');
+ return;
+ }
+ }
+
+ // If we get here, this comment rates lower than all the others,
+ // or it is the only comment in the list.
+ ul.append(li.html(div));
+ li.slideDown('fast');
+ }
+
+ function acceptComment(id) {
+ $.ajax({
+ type: 'POST',
+ url: opts.acceptCommentURL,
+ data: {id: id},
+ success: function(data, textStatus, request) {
+ $('#cm' + id).fadeOut('fast');
+ $('#cd' + id).removeClass('moderate');
+ },
+ error: function(request, textStatus, error) {
+ showError('Oops, there was a problem accepting the comment.');
+ }
+ });
+ }
+
+ function deleteComment(id) {
+ $.ajax({
+ type: 'POST',
+ url: opts.deleteCommentURL,
+ data: {id: id},
+ success: function(data, textStatus, request) {
+ var div = $('#cd' + id);
+ if (data == 'delete') {
+ // Moderator mode: remove the comment and all children immediately
+ div.slideUp('fast', function() {
+ div.remove();
+ });
+ return;
+ }
+ // User mode: only mark the comment as deleted
+ div
+ .find('span.user-id:first')
+ .text('[deleted]').end()
+ .find('div.comment-text:first')
+ .text('[deleted]').end()
+ .find('#cm' + id + ', #dc' + id + ', #ac' + id + ', #rc' + id +
+ ', #sp' + id + ', #hp' + id + ', #cr' + id + ', #rl' + id)
+ .remove();
+ var comment = div.data('comment');
+ comment.username = '[deleted]';
+ comment.text = '[deleted]';
+ div.data('comment', comment);
+ },
+ error: function(request, textStatus, error) {
+ showError('Oops, there was a problem deleting the comment.');
+ }
+ });
+ }
+
+ function showProposal(id) {
+ $('#sp' + id).hide();
+ $('#hp' + id).show();
+ $('#pr' + id).slideDown('fast');
+ }
+
+ function hideProposal(id) {
+ $('#hp' + id).hide();
+ $('#sp' + id).show();
+ $('#pr' + id).slideUp('fast');
+ }
+
+ function showProposeChange(id) {
+ $('#pc' + id).hide();
+ $('#hc' + id).show();
+ var textarea = $('#pt' + id);
+ textarea.val(textarea.data('source'));
+ $.fn.autogrow.resize(textarea[0]);
+ textarea.slideDown('fast');
+ }
+
+ function hideProposeChange(id) {
+ $('#hc' + id).hide();
+ $('#pc' + id).show();
+ var textarea = $('#pt' + id);
+ textarea.val('').removeAttr('disabled');
+ textarea.slideUp('fast');
+ }
+
+ function toggleCommentMarkupBox(id) {
+ $('#mb' + id).toggle();
+ }
+
+ /** Handle when the user clicks on a sort by link. */
+ function handleReSort(link) {
+ var classes = link.attr('class').split(/\s+/);
+ for (var i=0; i<classes.length; i++) {
+ if (classes[i] != 'sort-option') {
+ by = classes[i].substring(2);
+ }
+ }
+ setComparator();
+ // Save/update the sortBy cookie.
+ var expiration = new Date();
+ expiration.setDate(expiration.getDate() + 365);
+ document.cookie= 'sortBy=' + escape(by) +
+ ';expires=' + expiration.toUTCString();
+ $('ul.comment-ul').each(function(index, ul) {
+ var comments = getChildren($(ul), true);
+ comments = sortComments(comments);
+ appendComments(comments, $(ul).empty());
+ });
+ }
+
+ /**
+ * Function to process a vote when a user clicks an arrow.
+ */
+ function handleVote(link) {
+ if (!opts.voting) {
+ showError("You'll need to login to vote.");
+ return;
+ }
+
+ var id = link.attr('id');
+ if (!id) {
+ // Didn't click on one of the voting arrows.
+ return;
+ }
+ // If it is an unvote, the new vote value is 0,
+ // Otherwise it's 1 for an upvote, or -1 for a downvote.
+ var value = 0;
+ if (id.charAt(1) != 'u') {
+ value = id.charAt(0) == 'u' ? 1 : -1;
+ }
+ // The data to be sent to the server.
+ var d = {
+ comment_id: id.substring(2),
+ value: value
+ };
+
+ // Swap the vote and unvote links.
+ link.hide();
+ $('#' + id.charAt(0) + (id.charAt(1) == 'u' ? 'v' : 'u') + d.comment_id)
+ .show();
+
+ // The div the comment is displayed in.
+ var div = $('div#cd' + d.comment_id);
+ var data = div.data('comment');
+
+ // If this is not an unvote, and the other vote arrow has
+ // already been pressed, unpress it.
+ if ((d.value !== 0) && (data.vote === d.value * -1)) {
+ $('#' + (d.value == 1 ? 'd' : 'u') + 'u' + d.comment_id).hide();
+ $('#' + (d.value == 1 ? 'd' : 'u') + 'v' + d.comment_id).show();
+ }
+
+ // Update the comments rating in the local data.
+ data.rating += (data.vote === 0) ? d.value : (d.value - data.vote);
+ data.vote = d.value;
+ div.data('comment', data);
+
+ // Change the rating text.
+ div.find('.rating:first')
+ .text(data.rating + ' point' + (data.rating == 1 ? '' : 's'));
+
+ // Send the vote information to the server.
+ $.ajax({
+ type: "POST",
+ url: opts.processVoteURL,
+ data: d,
+ error: function(request, textStatus, error) {
+ showError('Oops, there was a problem casting that vote.');
+ }
+ });
+ }
+
+ /**
+ * Open a reply form used to reply to an existing comment.
+ */
+ function openReply(id) {
+ // Swap out the reply link for the hide link
+ $('#rl' + id).hide();
+ $('#cr' + id).show();
+
+ // Add the reply li to the children ul.
+ var div = $(renderTemplate(replyTemplate, {id: id})).hide();
+ $('#cl' + id)
+ .prepend(div)
+ // Setup the submit handler for the reply form.
+ .find('#rf' + id)
+ .submit(function(event) {
+ event.preventDefault();
+ addComment($('#rf' + id));
+ closeReply(id);
+ })
+ .find('input[type=button]')
+ .click(function() {
+ closeReply(id);
+ });
+ div.slideDown('fast', function() {
+ $('#rf' + id).find('textarea').focus();
+ });
+ }
+
+ /**
+ * Close the reply form opened with openReply.
+ */
+ function closeReply(id) {
+ // Remove the reply div from the DOM.
+ $('#rd' + id).slideUp('fast', function() {
+ $(this).remove();
+ });
+
+ // Swap out the hide link for the reply link
+ $('#cr' + id).hide();
+ $('#rl' + id).show();
+ }
+
+ /**
+ * Recursively sort a tree of comments using the comp comparator.
+ */
+ function sortComments(comments) {
+ comments.sort(comp);
+ $.each(comments, function() {
+ this.children = sortComments(this.children);
+ });
+ return comments;
+ }
+
+ /**
+ * Get the children comments from a ul. If recursive is true,
+ * recursively include childrens' children.
+ */
+ function getChildren(ul, recursive) {
+ var children = [];
+ ul.children().children("[id^='cd']")
+ .each(function() {
+ var comment = $(this).data('comment');
+ if (recursive)
+ comment.children = getChildren($(this).find('#cl' + comment.id), true);
+ children.push(comment);
+ });
+ return children;
+ }
+
+ /** Create a div to display a comment in. */
+ function createCommentDiv(comment) {
+ if (!comment.displayed && !opts.moderator) {
+ return $('<div class="moderate">Thank you! Your comment will show up '
+ + 'once it is has been approved by a moderator.</div>');
+ }
+ // Prettify the comment rating.
+ comment.pretty_rating = comment.rating + ' point' +
+ (comment.rating == 1 ? '' : 's');
+ // Make a class (for displaying not yet moderated comments differently)
+ comment.css_class = comment.displayed ? '' : ' moderate';
+ // Create a div for this comment.
+ var context = $.extend({}, opts, comment);
+ var div = $(renderTemplate(commentTemplate, context));
+
+ // If the user has voted on this comment, highlight the correct arrow.
+ if (comment.vote) {
+ var direction = (comment.vote == 1) ? 'u' : 'd';
+ div.find('#' + direction + 'v' + comment.id).hide();
+ div.find('#' + direction + 'u' + comment.id).show();
+ }
+
+ if (opts.moderator || comment.text != '[deleted]') {
+ div.find('a.reply').show();
+ if (comment.proposal_diff)
+ div.find('#sp' + comment.id).show();
+ if (opts.moderator && !comment.displayed)
+ div.find('#cm' + comment.id).show();
+ if (opts.moderator || (opts.username == comment.username))
+ div.find('#dc' + comment.id).show();
+ }
+ return div;
+ }
+
+ /**
+ * A simple template renderer. Placeholders such as <%id%> are replaced
+ * by context['id'] with items being escaped. Placeholders such as <#id#>
+ * are not escaped.
+ */
+ function renderTemplate(template, context) {
+ var esc = $(document.createElement('div'));
+
+ function handle(ph, escape) {
+ var cur = context;
+ $.each(ph.split('.'), function() {
+ cur = cur[this];
+ });
+ return escape ? esc.text(cur || "").html() : cur;
+ }
+
+ return template.replace(/<([%#])([\w\.]*)\1>/g, function() {
+ return handle(arguments[2], arguments[1] == '%' ? true : false);
+ });
+ }
+
+ /** Flash an error message briefly. */
+ function showError(message) {
+ $(document.createElement('div')).attr({'class': 'popup-error'})
+ .append($(document.createElement('div'))
+ .attr({'class': 'error-message'}).text(message))
+ .appendTo('body')
+ .fadeIn("slow")
+ .delay(2000)
+ .fadeOut("slow");
+ }
+
+ /** Add a link the user uses to open the comments popup. */
+ $.fn.comment = function() {
+ return this.each(function() {
+ var id = $(this).attr('id').substring(1);
+ var count = COMMENT_METADATA[id];
+ var title = count + ' comment' + (count == 1 ? '' : 's');
+ var image = count > 0 ? opts.commentBrightImage : opts.commentImage;
+ var addcls = count == 0 ? ' nocomment' : '';
+ $(this)
+ .append(
+ $(document.createElement('a')).attr({
+ href: '#',
+ 'class': 'sphinx-comment-open' + addcls,
+ id: 'ao' + id
+ })
+ .append($(document.createElement('img')).attr({
+ src: image,
+ alt: 'comment',
+ title: title
+ }))
+ .click(function(event) {
+ event.preventDefault();
+ show($(this).attr('id').substring(2));
+ })
+ )
+ .append(
+ $(document.createElement('a')).attr({
+ href: '#',
+ 'class': 'sphinx-comment-close hidden',
+ id: 'ah' + id
+ })
+ .append($(document.createElement('img')).attr({
+ src: opts.closeCommentImage,
+ alt: 'close',
+ title: 'close'
+ }))
+ .click(function(event) {
+ event.preventDefault();
+ hide($(this).attr('id').substring(2));
+ })
+ );
+ });
+ };
+
+ var opts = {
+ processVoteURL: '/_process_vote',
+ addCommentURL: '/_add_comment',
+ getCommentsURL: '/_get_comments',
+ acceptCommentURL: '/_accept_comment',
+ deleteCommentURL: '/_delete_comment',
+ commentImage: '/static/_static/comment.png',
+ closeCommentImage: '/static/_static/comment-close.png',
+ loadingImage: '/static/_static/ajax-loader.gif',
+ commentBrightImage: '/static/_static/comment-bright.png',
+ upArrow: '/static/_static/up.png',
+ downArrow: '/static/_static/down.png',
+ upArrowPressed: '/static/_static/up-pressed.png',
+ downArrowPressed: '/static/_static/down-pressed.png',
+ voting: false,
+ moderator: false
+ };
+
+ if (typeof COMMENT_OPTIONS != "undefined") {
+ opts = jQuery.extend(opts, COMMENT_OPTIONS);
+ }
+
+ var popupTemplate = '\
+ <div class="sphinx-comments" id="sc<%id%>">\
+ <p class="sort-options">\
+ Sort by:\
+ <a href="#" class="sort-option byrating">best rated</a>\
+ <a href="#" class="sort-option byascage">newest</a>\
+ <a href="#" class="sort-option byage">oldest</a>\
+ </p>\
+ <div class="comment-header">Comments</div>\
+ <div class="comment-loading" id="cn<%id%>">\
+ loading comments... <img src="<%loadingImage%>" alt="" /></div>\
+ <ul id="cl<%id%>" class="comment-ul"></ul>\
+ <div id="ca<%id%>">\
+ <p class="add-a-comment">Add a comment\
+ (<a href="#" class="comment-markup" id="ab<%id%>">markup</a>):</p>\
+ <div class="comment-markup-box" id="mb<%id%>">\
+ reStructured text markup: <i>*emph*</i>, <b>**strong**</b>, \
+ <tt>``code``</tt>, \
+ code blocks: <tt>::</tt> and an indented block after blank line</div>\
+ <form method="post" id="cf<%id%>" class="comment-form" action="">\
+ <textarea name="comment" cols="80"></textarea>\
+ <p class="propose-button">\
+ <a href="#" id="pc<%id%>" class="show-propose-change">\
+ Propose a change ▹\
+ </a>\
+ <a href="#" id="hc<%id%>" class="hide-propose-change">\
+ Propose a change ▿\
+ </a>\
+ </p>\
+ <textarea name="proposal" id="pt<%id%>" cols="80"\
+ spellcheck="false"></textarea>\
+ <input type="submit" value="Add comment" />\
+ <input type="hidden" name="node" value="<%id%>" />\
+ <input type="hidden" name="parent" value="" />\
+ </form>\
+ </div>\
+ </div>';
+
+ var commentTemplate = '\
+ <div id="cd<%id%>" class="sphinx-comment<%css_class%>">\
+ <div class="vote">\
+ <div class="arrow">\
+ <a href="#" id="uv<%id%>" class="vote" title="vote up">\
+ <img src="<%upArrow%>" />\
+ </a>\
+ <a href="#" id="uu<%id%>" class="un vote" title="vote up">\
+ <img src="<%upArrowPressed%>" />\
+ </a>\
+ </div>\
+ <div class="arrow">\
+ <a href="#" id="dv<%id%>" class="vote" title="vote down">\
+ <img src="<%downArrow%>" id="da<%id%>" />\
+ </a>\
+ <a href="#" id="du<%id%>" class="un vote" title="vote down">\
+ <img src="<%downArrowPressed%>" />\
+ </a>\
+ </div>\
+ </div>\
+ <div class="comment-content">\
+ <p class="tagline comment">\
+ <span class="user-id"><%username%></span>\
+ <span class="rating"><%pretty_rating%></span>\
+ <span class="delta"><%time.delta%></span>\
+ </p>\
+ <div class="comment-text comment"><#text#></div>\
+ <p class="comment-opts comment">\
+ <a href="#" class="reply hidden" id="rl<%id%>">reply ▹</a>\
+ <a href="#" class="close-reply" id="cr<%id%>">reply ▿</a>\
+ <a href="#" id="sp<%id%>" class="show-proposal">proposal ▹</a>\
+ <a href="#" id="hp<%id%>" class="hide-proposal">proposal ▿</a>\
+ <a href="#" id="dc<%id%>" class="delete-comment hidden">delete</a>\
+ <span id="cm<%id%>" class="moderation hidden">\
+ <a href="#" id="ac<%id%>" class="accept-comment">accept</a>\
+ </span>\
+ </p>\
+ <pre class="proposal" id="pr<%id%>">\
+<#proposal_diff#>\
+ </pre>\
+ <ul class="comment-children" id="cl<%id%>"></ul>\
+ </div>\
+ <div class="clearleft"></div>\
+ </div>\
+ </div>';
+
+ var replyTemplate = '\
+ <li>\
+ <div class="reply-div" id="rd<%id%>">\
+ <form id="rf<%id%>">\
+ <textarea name="comment" cols="80"></textarea>\
+ <input type="submit" value="Add reply" />\
+ <input type="button" value="Cancel" />\
+ <input type="hidden" name="parent" value="<%id%>" />\
+ <input type="hidden" name="node" value="" />\
+ </form>\
+ </div>\
+ </li>';
+
+ $(document).ready(function() {
+ init();
+ });
+})(jQuery);
+
+$(document).ready(function() {
+ // add comment anchors for all paragraphs that are commentable
+ $('.sphinx-has-comment').comment();
+
+ // highlight search words in search results
+ $("div.context").each(function() {
+ var params = $.getQueryParameters();
+ var terms = (params.q) ? params.q[0].split(/\s+/) : [];
+ var result = $(this);
+ $.each(terms, function() {
+ result.highlightText(this.toLowerCase(), 'highlighted');
+ });
+ });
+
+ // directly open comment window if requested
+ var anchor = document.location.hash;
+ if (anchor.substring(0, 9) == '#comment-') {
+ $('#ao' + anchor.substring(9)).click();
+ document.location.hash = '#s' + anchor.substring(9);
+ }
+});
Added: www-releases/trunk/3.9.1/tools/clang/docs/genindex.html
URL: http://llvm.org/viewvc/llvm-project/www-releases/trunk/3.9.1/tools/clang/docs/genindex.html?rev=290368&view=auto
==============================================================================
--- www-releases/trunk/3.9.1/tools/clang/docs/genindex.html (added)
+++ www-releases/trunk/3.9.1/tools/clang/docs/genindex.html Thu Dec 22 14:04:03 2016
@@ -0,0 +1,1933 @@
+
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
+
+<html xmlns="http://www.w3.org/1999/xhtml">
+ <head>
+ <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+
+ <title>Index — Clang 3.9 documentation</title>
+
+ <link rel="stylesheet" href="_static/haiku.css" type="text/css" />
+ <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
+
+ <script type="text/javascript">
+ var DOCUMENTATION_OPTIONS = {
+ URL_ROOT: './',
+ VERSION: '3.9',
+ COLLAPSE_INDEX: false,
+ FILE_SUFFIX: '.html',
+ HAS_SOURCE: true
+ };
+ </script>
+ <script type="text/javascript" src="_static/jquery.js"></script>
+ <script type="text/javascript" src="_static/underscore.js"></script>
+ <script type="text/javascript" src="_static/doctools.js"></script>
+ <script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
+ <link rel="top" title="Clang 3.9 documentation" href="index.html" />
+ </head>
+ <body>
+ <div class="header"><h1 class="heading"><a href="index.html">
+ <span>Clang 3.9 documentation</span></a></h1>
+ <h2 class="heading"><span>Index</span></h2>
+ </div>
+ <div class="topnav">
+
+ <p>
+ <a class="uplink" href="index.html">Contents</a>
+ </p>
+
+ </div>
+ <div class="content">
+
+
+
+<h1 id="index">Index</h1>
+
+<div class="genindex-jumpbox">
+ <a href="#Symbols"><strong>Symbols</strong></a>
+ | <a href="#C"><strong>C</strong></a>
+ | <a href="#E"><strong>E</strong></a>
+ | <a href="#N"><strong>N</strong></a>
+
+</div>
+<h2 id="Symbols">Symbols</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt>
+ -###
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ --help
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption--help">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -ansi
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-ansi">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -arch <architecture>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-arch">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -c
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-c">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -D<macroname>=<value>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-D">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -E
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-E">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -F<directory>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-F">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fblocks
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fblocks">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fborland-extensions
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fborland-extensions">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fbracket-depth=N
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fbracket-depth">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fcomment-block-commands=[commands]
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fcomment-block-commands">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fcommon, -fno-common
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fcommon">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fconstexpr-depth=N
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fconstexpr-depth">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fdiagnostics-format=clang/msvc/vi
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fdiagnostics-format">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fdiagnostics-parseable-fixits
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fdiagnostics-parseable-fixits">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fdiagnostics-show-category=none/id/name
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fdiagnostics-show-category">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fdiagnostics-show-template-tree
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fdiagnostics-show-template-tree">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -femulated-tls
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-femulated-tls">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -ferror-limit=123
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-ferror-limit">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fexceptions
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fexceptions">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -ffast-math
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-ffast-math">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -ffreestanding
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-ffreestanding">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -flax-vector-conversions
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-flax-vector-conversions">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -flto, -emit-llvm
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-flto">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fmath-errno
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fmath-errno">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fms-extensions
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fms-extensions">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fmsc-version=
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fmsc-version">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fno-assume-sane-operator-new
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fno-assume-sane-operator-new">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fno-builtin
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fno-builtin">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fno-crash-diagnostics
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fno-crash-diagnostics">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fno-elide-type
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fno-elide-type">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fno-sanitize-blacklist
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fno-sanitize-blacklist">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fno-standalone-debug
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fno-standalone-debug">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fobjc-abi-version=version
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fobjc-abi-version">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fobjc-gc
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fobjc-gc">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fobjc-gc-only
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fobjc-gc-only">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fobjc-nonfragile-abi, -fno-objc-nonfragile-abi
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fobjc-nonfragile-abi">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fobjc-nonfragile-abi-version=<version>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fobjc-nonfragile-abi-version">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fopenmp-use-tls
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fopenmp-use-tls">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -foperator-arrow-depth=N
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-foperator-arrow-depth">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fparse-all-comments
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fparse-all-comments">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fpascal-strings
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fpascal-strings">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fprofile-generate[=<dirname>]
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fprofile-generate">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fprofile-use[=<pathname>]
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fprofile-use">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fsanitize-blacklist=/path/to/blacklist/file
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fsanitize-blacklist">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fsanitize-cfi-cross-dso
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fsanitize-cfi-cross-dso">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fsanitize-undefined-trap-on-error
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fsanitize-undefined-trap-on-error">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fshow-column, -fshow-source-location, -fcaret-diagnostics, -fdiagnostics-fixit-info, -fdiagnostics-parseable-fixits, -fdiagnostics-print-source-range-info, -fprint-source-range-info, -fdiagnostics-show-option, -fmessage-length
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fshow-column">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fstandalone-debug
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fstandalone-debug">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fstandalone-debug -fno-standalone-debug
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fstandalone-debug">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fsyntax-only
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fsyntax-only">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -ftemplate-backtrace-limit=123
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-ftemplate-backtrace-limit">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -ftemplate-depth=N
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-ftemplate-depth">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -ftime-report
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-ftime-report">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -ftls-model=<model>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-ftls-model">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -ftls-model=[model]
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-ftls-model">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -ftrap-function=[name]
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-ftrap-function">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -ftrapv
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-ftrapv">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fvisibility
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fvisibility">command line option</a>
+ </dt>
+
+ </dl></dd>
+ </dl></td>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt>
+ -fwhole-program-vtables
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-fwhole-program-vtables">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -fwritable-strings
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fwritable-strings">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -g
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-g">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -g, -gline-tables-only, -gmodules
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-g">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -g0
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-g0">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -ggdb, -glldb, -gsce
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-ggdb">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -gline-tables-only
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-gline-tables-only">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -I<directory>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-I">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -include <filename>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-include">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -integrated-as, -no-integrated-as
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-integrated-as">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -m[no-]crc
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-m">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -march=<cpu>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-march">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -mcompact-branches=[values]
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-mcompact-branches">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -mgeneral-regs-only
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-mgeneral-regs-only">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -mhwdiv=[values]
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-mhwdiv">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -miphoneos-version-min
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-miphoneos-version-min">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -mmacosx-version-min=<version>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-mmacosx-version-min">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -MV
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-MV">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -nobuiltininc
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-nobuiltininc">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -nostdinc
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-nostdinc">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -nostdlibinc
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-nostdlibinc">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -o <file>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-o">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -O0, -O1, -O2, -O3, -Ofast, -Os, -Oz, -O, -O4
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-O0">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -ObjC, -ObjC++
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-ObjC">command line option</a>, <a href="CommandGuide/clang.html#cmdoption-ObjC">[1]</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -pedantic
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-pedantic">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -pedantic-errors
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-pedantic-errors">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -print-file-name=<file>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-print-file-name">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -print-libgcc-file-name
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-print-libgcc-file-name">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -print-prog-name=<name>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-print-prog-name">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -print-search-dirs
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-print-search-dirs">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Qunused-arguments
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Qunused-arguments">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -S
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-S">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -save-temps
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-save-temps">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -std=<language>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-std">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -stdlib=<library>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-stdlib">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -time
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-time">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -trigraphs
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-trigraphs">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -U<macroname>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-U">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -v
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-v">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -w
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-w">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Wa,<args>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Wa">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Wambiguous-member-template
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-Wambiguous-member-template">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Wbind-to-temporary-copy
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-Wbind-to-temporary-copy">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Wdocumentation
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-Wdocumentation">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Werror
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-Werror">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Weverything
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-Weverything">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Wextra-tokens
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-Wextra-tokens">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Wfoo
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-Wfoo">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Wl,<args>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Wl">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Wno-documentation-unknown-command
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-Wno-documentation-unknown-command">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Wno-error=foo
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-Wno-error">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Wno-foo
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-Wno-foo">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Wp,<args>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Wp">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Wsystem-headers
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="UsersManual.html#cmdoption-Wsystem-headers">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -x <language>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-x">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Xanalyzer <arg>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Xanalyzer">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Xassembler <arg>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Xassembler">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Xlinker <arg>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Xlinker">command line option</a>
+ </dt>
+
+ </dl></dd>
+
+ <dt>
+ -Xpreprocessor <arg>
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Xpreprocessor">command line option</a>
+ </dt>
+
+ </dl></dd>
+ </dl></td>
+</tr></table>
+
+<h2 id="C">C</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt>
+ command line option
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-">-###</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption--help">--help</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-D">-D<macroname>=<value></a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-E">-E</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-F">-F<directory></a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-I">-I<directory></a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-MV">-MV</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-O0">-O0, -O1, -O2, -O3, -Ofast, -Os, -Oz, -O, -O4</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-ObjC">-ObjC, -ObjC++</a>, <a href="CommandGuide/clang.html#cmdoption-ObjC">[1]</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Qunused-arguments">-Qunused-arguments</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-S">-S</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-U">-U<macroname></a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Wa">-Wa,<args></a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-Wambiguous-member-template">-Wambiguous-member-template</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-Wbind-to-temporary-copy">-Wbind-to-temporary-copy</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-Wdocumentation">-Wdocumentation</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-Werror">-Werror</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-Weverything">-Weverything</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-Wextra-tokens">-Wextra-tokens</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-Wfoo">-Wfoo</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Wl">-Wl,<args></a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-Wno-documentation-unknown-command">-Wno-documentation-unknown-command</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-Wno-error">-Wno-error=foo</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-Wno-foo">-Wno-foo</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Wp">-Wp,<args></a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-Wsystem-headers">-Wsystem-headers</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Xanalyzer">-Xanalyzer <arg></a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Xassembler">-Xassembler <arg></a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Xlinker">-Xlinker <arg></a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-Xpreprocessor">-Xpreprocessor <arg></a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-ansi">-ansi</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-arch">-arch <architecture></a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-c">-c</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fblocks">-fblocks</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fborland-extensions">-fborland-extensions</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fbracket-depth">-fbracket-depth=N</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fcomment-block-commands">-fcomment-block-commands=[commands]</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fcommon">-fcommon, -fno-common</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fconstexpr-depth">-fconstexpr-depth=N</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fdiagnostics-format">-fdiagnostics-format=clang/msvc/vi</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fdiagnostics-parseable-fixits">-fdiagnostics-parseable-fixits</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fdiagnostics-show-category">-fdiagnostics-show-category=none/id/name</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fdiagnostics-show-template-tree">-fdiagnostics-show-template-tree</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-femulated-tls">-femulated-tls</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-ferror-limit">-ferror-limit=123</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fexceptions">-fexceptions</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-ffast-math">-ffast-math</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-ffreestanding">-ffreestanding</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-flax-vector-conversions">-flax-vector-conversions</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-flto">-flto, -emit-llvm</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fmath-errno">-fmath-errno</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fms-extensions">-fms-extensions</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fmsc-version">-fmsc-version=</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fno-assume-sane-operator-new">-fno-assume-sane-operator-new</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fno-builtin">-fno-builtin</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fno-crash-diagnostics">-fno-crash-diagnostics</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fno-elide-type">-fno-elide-type</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fno-sanitize-blacklist">-fno-sanitize-blacklist</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fno-standalone-debug">-fno-standalone-debug</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fobjc-abi-version">-fobjc-abi-version=version</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fobjc-gc">-fobjc-gc</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fobjc-gc-only">-fobjc-gc-only</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fobjc-nonfragile-abi">-fobjc-nonfragile-abi, -fno-objc-nonfragile-abi</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fobjc-nonfragile-abi-version">-fobjc-nonfragile-abi-version=<version></a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fopenmp-use-tls">-fopenmp-use-tls</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-foperator-arrow-depth">-foperator-arrow-depth=N</a>
+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fparse-all-comments">-fparse-all-comments</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-fpascal-strings">-fpascal-strings</a>
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+
+
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+
+
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+
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+ </dt>
+
+
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+ </dt>
+
+
+ <dt><a href="UsersManual.html#cmdoption-fsanitize-undefined-trap-on-error">-fsanitize-undefined-trap-on-error</a>
+ </dt>
+
+
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+
+
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+
+
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+ </dt>
+
+
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+
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+ <dt><a href="UsersManual.html#cmdoption-pedantic-errors">-pedantic-errors</a>
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+
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+
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+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-arg-no">no stage selection option</a>
+ </dt>
+
+ </dl></dd>
+ </dl></td>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="CommandGuide/clang.html#index-0">CPATH</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="E">E</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt>
+ environment variable
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#envvar-CPATH">CPATH</a>, <a href="CommandGuide/clang.html#index-0">[1]</a>
+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#envvar-C_INCLUDE_PATH,OBJC_INCLUDE_PATH,CPLUS_INCLUDE_PATH,OBJCPLUS_INCLUDE_PATH">C_INCLUDE_PATH,OBJC_INCLUDE_PATH,CPLUS_INCLUDE_PATH,OBJCPLUS_INCLUDE_PATH</a>
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+
+
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+ </dt>
+
+
+ <dt><a href="CommandGuide/clang.html#envvar-TMPDIR,TEMP,TMP">TMPDIR,TEMP,TMP</a>
+ </dt>
+
+ </dl></dd>
+ </dl></td>
+</tr></table>
+
+<h2 id="N">N</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt>
+ no stage selection option
+ </dt>
+
+ <dd><dl>
+
+ <dt><a href="CommandGuide/clang.html#cmdoption-arg-no">command line option</a>
+ </dt>
+
+ </dl></dd>
+ </dl></td>
+</tr></table>
+
+
+
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+ <div class="bottomnav">
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\ No newline at end of file
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+ <head>
+ <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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+ <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
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+ URL_ROOT: './',
+ VERSION: '3.9',
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+ <link rel="top" title="Clang 3.9 documentation" href="#" />
+ <link rel="next" title="Clang 3.9 Release Notes" href="ReleaseNotes.html" />
+ </head>
+ <body>
+ <div class="header"><h1 class="heading"><a href="#">
+ <span>Clang 3.9 documentation</span></a></h1>
+ <h2 class="heading"><span>Welcome to Clangâs documentation!</span></h2>
+ </div>
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+
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+<ul>
+<li class="toctree-l1"><a class="reference internal" href="ReleaseNotes.html">Clang 3.9 Release Notes</a></li>
+</ul>
+</div>
+<div class="section" id="using-clang-as-a-compiler">
+<h1>Using Clang as a Compiler<a class="headerlink" href="#using-clang-as-a-compiler" title="Permalink to this headline">¶</a></h1>
+<div class="toctree-wrapper compound">
+<ul>
+<li class="toctree-l1"><a class="reference internal" href="UsersManual.html">Clang Compiler User’s Manual</a></li>
+<li class="toctree-l1"><a class="reference internal" href="LanguageExtensions.html">Clang Language Extensions</a></li>
+<li class="toctree-l1"><a class="reference internal" href="AttributeReference.html">Attributes in Clang</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="ThreadSafetyAnalysis.html">Thread Safety Analysis</a></li>
+<li class="toctree-l1"><a class="reference internal" href="AddressSanitizer.html">AddressSanitizer</a></li>
+<li class="toctree-l1"><a class="reference internal" href="ThreadSanitizer.html">ThreadSanitizer</a></li>
+<li class="toctree-l1"><a class="reference internal" href="MemorySanitizer.html">MemorySanitizer</a></li>
+<li class="toctree-l1"><a class="reference internal" href="UndefinedBehaviorSanitizer.html">UndefinedBehaviorSanitizer</a></li>
+<li class="toctree-l1"><a class="reference internal" href="DataFlowSanitizer.html">DataFlowSanitizer</a></li>
+<li class="toctree-l1"><a class="reference internal" href="LeakSanitizer.html">LeakSanitizer</a></li>
+<li class="toctree-l1"><a class="reference internal" href="SanitizerCoverage.html">SanitizerCoverage</a></li>
+<li class="toctree-l1"><a class="reference internal" href="SanitizerStats.html">SanitizerStats</a></li>
+<li class="toctree-l1"><a class="reference internal" href="SanitizerSpecialCaseList.html">Sanitizer special case list</a></li>
+<li class="toctree-l1"><a class="reference internal" href="ControlFlowIntegrity.html">Control Flow Integrity</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="SourceBasedCodeCoverage.html">Source-based Code Coverage</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="FAQ.html">Frequently Asked Questions (FAQ)</a></li>
+</ul>
+</div>
+</div>
+<div class="section" id="using-clang-as-a-library">
+<h1>Using Clang as a Library<a class="headerlink" href="#using-clang-as-a-library" title="Permalink to this headline">¶</a></h1>
+<div class="toctree-wrapper compound">
+<ul>
+<li class="toctree-l1"><a class="reference internal" href="Tooling.html">Choosing the Right Interface for Your Application</a></li>
+<li class="toctree-l1"><a class="reference internal" href="ExternalClangExamples.html">External Clang Examples</a></li>
+<li class="toctree-l1"><a class="reference internal" href="IntroductionToTheClangAST.html">Introduction to the Clang AST</a></li>
+<li class="toctree-l1"><a class="reference internal" href="LibTooling.html">LibTooling</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="ClangPlugins.html">Clang Plugins</a></li>
+<li class="toctree-l1"><a class="reference internal" href="RAVFrontendAction.html">How to write RecursiveASTVisitor based ASTFrontendActions.</a></li>
+<li class="toctree-l1"><a class="reference internal" href="LibASTMatchersTutorial.html">Tutorial for building tools using LibTooling and LibASTMatchers</a></li>
+<li class="toctree-l1"><a class="reference internal" href="LibASTMatchers.html">Matching the Clang AST</a></li>
+<li class="toctree-l1"><a class="reference internal" href="HowToSetupToolingForLLVM.html">How To Setup Clang Tooling For LLVM</a></li>
+<li class="toctree-l1"><a class="reference internal" href="JSONCompilationDatabase.html">JSON Compilation Database Format Specification</a></li>
+</ul>
+</div>
+</div>
+<div class="section" id="using-clang-tools">
+<h1>Using Clang Tools<a class="headerlink" href="#using-clang-tools" title="Permalink to this headline">¶</a></h1>
+<div class="toctree-wrapper compound">
+<ul>
+<li class="toctree-l1"><a class="reference internal" href="ClangTools.html">Overview</a></li>
+<li class="toctree-l1"><a class="reference internal" href="ClangCheck.html">ClangCheck</a></li>
+<li class="toctree-l1"><a class="reference internal" href="ClangFormat.html">ClangFormat</a></li>
+<li class="toctree-l1"><a class="reference internal" href="ClangFormatStyleOptions.html">Clang-Format Style Options</a></li>
+</ul>
+</div>
+</div>
+<div class="section" id="design-documents">
+<h1>Design Documents<a class="headerlink" href="#design-documents" title="Permalink to this headline">¶</a></h1>
+<div class="toctree-wrapper compound">
+<ul>
+<li class="toctree-l1"><a class="reference internal" href="InternalsManual.html">“Clang” CFE Internals Manual</a></li>
+<li class="toctree-l1"><a class="reference internal" href="DriverInternals.html">Driver Design & Internals</a></li>
+<li class="toctree-l1"><a class="reference internal" href="PTHInternals.html">Pretokenized Headers (PTH)</a></li>
+<li class="toctree-l1"><a class="reference internal" href="PCHInternals.html">Precompiled Header and Modules Internals</a></li>
+<li class="toctree-l1"><a class="reference internal" href="ItaniumMangleAbiTags.html">ABI tags</a></li>
+</ul>
+</div>
+</div>
+<div class="section" id="indices-and-tables">
+<h1>Indices and tables<a class="headerlink" href="#indices-and-tables" title="Permalink to this headline">¶</a></h1>
+<ul class="simple">
+<li><a class="reference internal" href="genindex.html"><em>Index</em></a></li>
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+ </div>
+ <div class="bottomnav">
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+ <p>
+ <a class="uplink" href="#">Contents</a>
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+ Created using <a href="http://sphinx-doc.org/">Sphinx</a> 1.2.2.
+ </div>
+ </body>
+</html>
\ No newline at end of file
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+ <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
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\ No newline at end of file
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39,7],"_block_byref_blockstoragefoo":50,getlocforendoftoken:8,gradual:33,unlock_funct:3,"__imag__":27,dictionarywithobjectsandkei:30,"__va_args__":[3,31],size_t:[39,33,7,12],block_literal_express:22,cold:12,still:[31,49,3,19,50,33,42,36,12,23,43,8,26,9,28,11,21,13],pointer:[],dynam:[],componentsseparatedbystr:30,fsanit:[],conjunct:[3,13],interspers:21,group:[],thumb:[26,31],polici:38,"__attribut":21,cxx_implicit_mov:27,fmath:0,offset1:31,tort:50,window:[],curli:[21,8],mail:[48,31,46,8],arguabl:31,main:[1,4,36,6,7,8,9,10,11,12,13,31,15,16,17,18,19,20,21,23,25,26,27,28,30,39,40,44,47,49,46],ascrib:21,cxxdestructordecl:[],bytearraybuild:11,non:[],declarationnamet:8,halt:[31,12],matcher:[],om_terrifi:27,wimplicit:[46,12],ymm5:12,underneath:31,buildcfg:8,istransparentcontext:8,mhwdiv:31,half:[31,46,8],alignupto:11,nov:23,now:[1,43,3,50,47,36,17,30,8,37,46,21],conflict_a:33,discuss:[],nor:[31,3,33,30,12,44,26,27,21],conflict_b:33,"0x44d97c8":37,term:[27,21,44,37,9,11,12,13],"__builtin_fra
me_address":29,namd:23,name:[],fio38:[],realist:33,perspect:[39,33,42,8],drop:[22,44,21,13],revert:14,int_min:[44,30],separ:[],getfullloc:17,"__sync_bool_compare_and_swap":27,callsit:[31,23,12],sfs_inlin:40,compoundstat:36,hijack:29,misbehav:21,coverage_bitset:23,domain:35,replai:28,weak_import:12,friend:31,replac:[0,14,3,33,2,31,30,12,39,8,49,27,21],individu:[],continu:[38,50,46,43,16,44,3,40,36,12,22,30,8,27,21],ggdb:31,contributor:[48,40],unlock:3,libgcc:[0,26],significantli:[46,23,42,21,8],begun:[44,21],year:27,objc_assign_weak:50,happen:[0,16,31,10,33,21,8,26,11,12],dispos:[22,50],inheritableattr:8,shown:[31,21,13],"__has_attribut":[],cabasicanim:30,"3rd":[0,31,8],space:[],profit:27,returnfunctionptr:22,profil:[],astwriterstmt:8,print_stacktrac:44,"_clang":[14,40],breakconstructorinitializersbeforecomma:40,compilation_command:37,correct:[38,31,1,29,32,46,15,30,7,8,26,27,11,21],ast_match:36,after:[],"goto":22,"__single_inherit":12,"__extension__":8,migrat:[31,3,10,12,22,24,21],f
error:31,atomic_ulong:[],wcomma:46,block_byref:50,mllvm:[31,27],"__sync_lock_test_and_set":27,createastprint:37,theori:21,org:[0,31,32,40,2,36,30,48,10],"byte":[14,16,31,39,6,44,23,8,11,12],argc:[16,17,30,44,23,36,47,49,12],unpredict:[4,27],"0x800000000000":39,care:[31,4,29,17,40,24,8,26,27,21,13],imagin:[40,33],wai:[1,3,4,30,8,11,12,14,15,18,21,23,24,26,27,28,29,31,32,33,35,36,37,39,40,42,47,34],badli:21,synchron:[22,19,21,8],unavoid:[21,16],recov:[38,31,44,43,21,22,8,12],thing:[31,17,8,48,26,27,28,21,13],punt:36,place:[38,14,4,31,3,40,50,33,42,30,12,39,8,26,27,21],memory_sanit:[],vcall:[25,38],bracebreakingstyl:40,principl:[38,50,21,13],imposs:[43,21,36,12],frequent:[],lambda:[],oper:[],mpi_int:12,"__cpp_digit_separ":27,unannot:[46,12],reimplement:46,directli:[27,0,4,31,3,18,40,20,33,42,30,12,39,34,8,48,9,44,10,21,13],carri:[21,12],onc:[0,4,16,31,47,33,42,36,8,26,13],arrai:[],declarationnam:8,yourself:[34,16],"0x7f789249b76c":49,walkthrough:[18,47],address_spac:27,stringref:17,foo
_priv:33,"long":[31,4,16,39,50,27,33,30,12,22,23,49,9,11,21,13],contigu:21,oppos:40,c_alignof:27,open:[37,31,40,21,30],lexicograph:[12,8],size:[],textdiagnosticprint:8,haslh:36,given:[14,16,31,3,39,40,20,33,42,43,12,22,23,47,8,26,27,44,11,21,13],const_cast:[27,10],silent:[37,23,21,46],workaround:[3,33],teardown:21,caught:[39,23,29],malform:30,declspec:[31,8],myplugin:18,checker:[31,46,24,36,8],necessarili:[27,28,24,8],draft:[31,27],averag:29,deploy:[38,0,33,12],objconeargselector:8,somelib:33,conveni:[17,33,36,12,22,37,27,21],cxx_decltyp:27,c_include_path:0,nsapp:30,getcxxnametyp:8,autolink:33,ariti:29,clangbas:[33,36],grant:50,especi:[31,3,19,33,8,9,21],copi:[],unroll_count:[27,12],valuewithcgpoint:30,specifi:[],pifloat:30,"short":[],enclos:[31,3,50,33,12,22,8,21],mostli:[31,39,46,43,21,8,12,13],date:[46,27,42,30],initialize_vector:31,"_z5tgsinf":12,holder:50,than:[0,1,3,30,8,11,12,13,31,16,19,21,22,23,24,26,27,29,33,35,36,38,40,42,44,49,46],serv:[3,10,42,36,8,48,9,21,13],wide:[31,
46,33,43,11,12],dispose_help:50,"__block_invoke_2":50,nsrang:27,instancemethodpool:42,drothli:48,redefinit:33,visitnodetyp:17,reinject:8,posix:31,balanc:[3,27,21],"__need_wchar_t":33,posit:[],bptr:21,objectatindexedsubscript:30,seri:[33,8],pre:[9,33,27,36],sai:[37,31,33,21,8],"_block_copy_assign":50,san:12,nicer:16,"0x4a87f0":23,testframework:27,pro:24,profiledata:31,anywher:[4,39,22,8,21,13],overnight:33,dash:[27,36],burdensom:21,"__has_extens":[],recover:44,duplicatesallowedwhilemerg:8,"0xh3c00":46,vector4float:27,nvcall:38,bitwis:[39,27,8],engin:[3,34],squar:[27,40,8],alias:[3,31,21],destroi:[3,22,50,21,12],moreov:[3,33,21,30],matchresult:36,retroact:21,lockandinit:3,fcoverag:4,"__builtin_arm_strex":27,ideal:[3,10,42,8,9,21],denomin:26,handicap:9,take:[0,4,30,8,12,31,17,18,20,21,22,24,25,27,32,33,35,36,37,38,40,43,47,50],rtag:48,upgrad:8,green:[27,13,30,8],shared_lock_funct:3,noth:[42,12,8],byref_keep:50,closer:11,begin:[31,40,50,42,21,22,46,8,10,12],printer:[36,8],offload:[46,12
],"0x6f70bc0":11,badclassnam:16,normal:[38,14,31,3,18,40,50,33,42,30,12,22,23,43,8,26,27,11,21],buffer:[0,29,14,40,33,31,42,8,12],c99:[22,33,12,31,8],knowingli:22,compress:[11,42],clearer:21,afterobjcdeclar:40,"0x200000000000":39,toplevel:[34,40,47],beta:[3,19],"__unalign":46,abus:13,ampamp:8,sublicens:50,pair:[14,39,50,36,22,23,30,8,27,21],fileurl:30,neatli:31,marked_vari:50,"_block_byref_keep_help":50,synthesi:[27,21],probabilist:29,allevi:12,synonym:[46,16],axw:48,ymm0:12,"__builtin_uadd_overflow":27,adopt:[33,30,13],cgcall:31,drive:10,quantiti:31,runtim:[],"__builtin_add_overflow":27,pattern:[14,4,16,3,40,33,36,35,30,8,27,10,21],thread_limit:[],eschult:48,preambl:[12,42],boundari:[38,33,15,11,21],gracefulli:8,"0x98":11,"__llvm_profile_runtim":4,newer:[12,42],uncondit:8,show:[0,1,14,17,46,4,36,31,8,48,27,13],formal:[3,21,12],arrayoftenblocksreturningvoidwithintargu:22,delta:31,spacesinangl:40,femul:[31,46],subprocess:13,maybebindtotemporari:8,"__underlying_typ":27,actoncxxnestedn
amespecifi:8,concurr:[21,12],badinitclasssubstr:16,"__alignof__":[],permiss:[50,8],hack:[38,8],blockb:50,cxx_unrestricted_union:27,dll:31,precondit:[35,21],"__isb":27,asan_symbol:16,xml:[2,14],userdata:39,onli:[0,1,3,4,36,6,7,8,9,10,11,12,13,14,16,17,18,19,20,21,22,23,24,25,26,27,28,29,31,33,30,37,38,40,42,44,46,47,34,49,50],explicitli:[3,46,33,42,36,12,39,8,27,21],nice:[47,36,8],fenc:12,trigger:[42,33,21,24],activ:[22,10,8],state:[31,16,39,27,33,42,21,8,9,12,13],frexp:27,fenv:33,dict:40,analyz:[],sloc:[34,41],analys:[39,10,8],offici:31,unaligned_char_ptr:[],overwritten:8,libclang:[],intptr_t:21,html_cov_report:23,nearli:[21,42],variou:[],get:[],wmodul:33,main2:12,predict:[27,11],clang:[],secondari:21,astconsum:[],cannot:[14,29,31,3,46,44,33,42,43,12,39,47,7,8,27,11,21,13],mihai:38,sse:12,"256mb":11,ssa:39,gen:8,requir:[],wdocument:31,"0x7ff3a302aa10":41,comp_dtor:50,"__builtin_mul_overflow":27,fixithint:8,allman:40,mutabl:[21,30,8],dramat:4,yield:[31,9,33,21,8],columnlimit:40,layou
t_compat:12,mediat:21,bugfix:[],privileg:27,gettypenam:8,where:[],good_rect:30,"__asm__":[31,12],summari:[0,4,50,6],wiki:[31,19,49,16,6],kernel:[],pointeralignmentstyl:40,textdiagnosticbuff:8,ggdb1:[],"9b4":11,tested_st:12,foobodi:8,atomic_float:[],spars:[39,4,11],namespac:[],spacebeforeassignmentoper:40,"_block_byref_i":50,exclipi:48,arglist:13,concern:[31,42,12,8],parsingfilenam:8,cxx_return_type_deduct:27,flexibl:[],amort:29,"0x17f":11,"__stdc_version__":31,"0x7f7893912e06":49,review:[10,21],enumer:[],dfsan_has_label:[39,7],ispointertyp:8,label:[],idx:30,getattr:8,semadeclattr:8,volatil:[31,42,8,49,27,21],between:[],char16_t:31,"import":[],atindexedsubscript:30,across:[38,31,29,39,33,30,21,8,26,12],"__builtin_ssub_overflow":27,fcntl:12,assumpt:[0,29,31,39,21,8,12],"__strong":21,parent:[14,40,33,12,22],block_priv:50,typedef:[31,33,30,21,22,8,27,12],cheap:8,"0x7ff3a302a470":41,cycl:[31,27,21],"__builtin_subcl":27,type_trait:[27,33],bitset:[],objcclass0:8,symbolnam:48,come:[0,31,46,
33,23,7,8,26,12],"_block_liter":50,ignoredattr:8,autoconf:27,vimrc:[37,14],"__builtin_bitreverse16":27,region:[14,4,29,16,39,7,27,11,12],sparc:31,eflag:12,fconstexpr:31,tutori:[],tsan_interceptor:19,mang:12,safe_stack:[],improv:[],check2:31,scope:[],evict:23,check1:31,afterstruct:40,among:[33,21,8],undocu:[31,8],m_pi:30,color:[31,27,30,8],alexdenisov:48,inspir:23,period:[3,33,4,11,8],pop:[22,42,21,31,12],tokenkind:8,exploit:21,colon:[40,15,21],some_union:12,cancel:31,pod:21,poll:8,damag:50,caret:[31,21,8],avaudioqualitymedium:30,ultim:[0,21,8],coupl:[10,8],harmless:27,"__builtin_subcb":27,rebuild:[33,24],ing:42,pch:[],mark:[],"__c11_atomic_compare_exchange_strong":27,iinclud:[18,47],rebuilt:33,"abstract":[0,1,3,33,42,36,22,24,8,28,13],gcov:[31,4],actonxxx:8,cxx_contextual_convers:27,use_lock_style_thread_safety_attribut:3,lsomelib:33,thousand:[39,31,35],resolut:[21,12],uncheck:11,voidarg:22,erlingsson:38,stephen:38,"__line__":31,intvar:36,"1mb":19,former:[33,7,8],those:[3,36,7,8,9,1
1,12,13,14,18,10,21,22,23,27,31,33,35,38,46,42,43,40],"case":[],interoper:[],pedant:[31,27,8],getspellinglinenumb:17,"__builtin_umull_overflow":27,unpleasantli:21,trick:[33,21],invok:[],tblgen:[31,8],copyabl:12,invoc:[31,21,22,37,49,9,12,13],nslocal:27,"__builtin_saddll_overflow":27,advantag:[31,39,30,12,8,37,9,27],objc_boxed_nsvalue_express:30,henc:[33,29,21],convinc:21,worri:21,destin:[44,50,7,21],isdigit:12,gnu99:31,contract:[40,28,50],pthread:19,objc_dictionary_liter:[27,30],ascii:[31,8],fcomment:31,kw_for:8,addr:[39,27,11],develop:[38,31,46,3,40,20,33,12,34,23,7,24,48,26,9,10,21,27],cxx_nullptr:27,author:[49,50,21],alphabet:40,pragmahandlerregistri:18,cc1:[],hasanyargu:46,same:[0,4,3,36,8,9,11,12,13,31,18,21,22,23,26,27,28,32,33,30,37,38,39,40,42,43,47,49,50],binari:[],html:[32,2,40,8],cpp11:40,pragmahandl:18,dfsan_label:[39,7],arc_cf_code_audit:21,om_norm:27,document:[],medit:8,recursiveastvisitor:[],unknownmemb:43,"__objc_no":30,exhaust:[33,21],"__builtin_constant_p":[27,8],s
pacesbeforetrailingcom:40,closest:40,"__builtin_va_list":41,gnueabi:26,assist:[31,50,33,43,21,13],"0x4b2bae":23,someon:[33,21],driven:[31,28,42,13],capabl:[],bad_sourc:15,"__builtin_usubll_overflow":27,mani:[38,0,10,31,3,50,33,42,36,12,17,43,8,34,26,27,28,11,21,13],immedi:[38,16,3,27,42,36,12,8,25,9,21],"0x5aeab50":34,requires_cap:3,appropri:[0,31,3,50,20,33,42,30,39,23,8,27,10,12,13],moder:0,inconsist:[21,16],createremov:8,macro:[],markup:8,identifiert:42,know:[31,4,3,36,44,23,8,48,26,27,11,21,13],justifi:21,without:[38,0,1,29,14,39,40,50,33,42,36,12,22,23,46,8,48,27,28,21,13],argument2:40,"__clangast":42,fdeclspec:12,argument1:40,leadingspac:8,objcmultiargselector:8,model:[],improp:46,dereferenc:[22,8],ccc:[26,40,13],cxxoperatorcallexpr:[],"__x":27,objectforkeyedsubscript:30,leewai:21,execut:[],freshli:17,excel:33,annot_template_id:8,compound:[34,22,50,21,30],neon:[26,27,33],smallestint:30,rest:[31,50,42,23,8,10,21],"__llvm_profile_set_filenam":4,pas_left:40,gdb:[31,43,8],multiple
x:8,aspect:[33,12,8],part:[0,3,36,8,12,13,31,16,17,10,21,23,24,26,27,28,29,32,33,35,50,42,44,47,34,46],touch:[14,12],polish:42,fairli:[9,33,36,8],cudakernalcallexpr:[],sizeddealloc:31,shortfunctionstyl:40,finclud:46,hint:[],mmap:9,penaltyexcesscharact:40,filecheck:8,except:[],param:[],identif:8,cxx:[3,37],"_z8myfoobarv":15,treatment:12,exercis:[31,27],beforecatch:40,vulner:[38,29],atomic_doubl:[],"_aligna":27,myabort:27,block_has_signatur:50,libm:26,mut:3,read:[0,49,16,30,2,3,50,47,31,36,12,23,42,14,8,26,9,28,11,21],outermost:[35,21],asan_symbolizer_path:16,comp_ctor:50,"0x7ff3a3029ed0":41,mov:[11,12],objc_array_liter:[27,30],libz:26,destaddr:50,va_start:12,hasincr:36,copy_help:50,walk:[15,8],saniti:[3,8],tolow:[39,7],danger:21,gs_rel:27,intel:[31,9],parameter_list:22,whitespac:[40,10,8],"11c7":11,treacher:21,"__c11_atomic_fetch_sub":27,integ:[0,31,39,46,42,36,44,23,30,8,27,11,12],shrink:[],benefit:[3,33,21,8],either:[0,1,3,8,12,13,31,16,21,22,26,27,28,29,33,35,37,38,40,42,43,46,34,
50],doccatconsum:8,fromtyp:27,output:[],heavi:38,inter:3,manag:[],fulfil:36,node:[],ns_returns_not_retain:[27,21,12],imageb:12,imagea:12,avaudioqualitymax:30,matur:3,dfsan_label_info:39,tvo:12,adequ:[21,12],uninstrument:7,atomic_size_t:[],function_doing_unaligned_access:44,ls_auto:40,nonzero:[39,27],gross:8,pfoo:0,both:[0,1,3,36,6,8,9,12,13,14,16,10,21,22,27,29,31,33,35,30,38,40,42,43,34,49,50],"11f5":11,libstdc:[0,19,27,49],highest:11,definit:[38,0,1,31,3,40,27,33,4,36,12,22,42,35,30,8,9,21,13],"_block_byref_dispose_help":50,legal:[22,21,30,12],"__has_virtual_destructor":27,"__builtin_saddl_overflow":27,k_label:7,exit:[],inject:8,"15x":19,ddc:11,dda:11,notabl:[21,13],overli:12,"__clang_major__":27,refer:[],block_field_is_object:50,ns_consumes_self:[27,21],getcxxoperatornam:8,compris:42,power:[],cxx_auto_typ:27,garbag:[0,50,29,21,22],inspect:[29,42,8],"0xc0bfffffffffff32":23,alwaysbreakafterdefinitionreturntyp:40,macronam:[0,33],llvm_clang_sourcemanager_h:42,found:[2,14,3,39,50,20,3
3,31,36,12,17,23,42,8,37,22,27,11,21,13],standpoint:42,immut:[30,8],"throw":[29,21,43],tread:21,src:[],"_fract":31,objctyp:30,assert_exclusive_lock:3,cxx_static_assert:27,island:12,formatted_cod:40,ftemplat:31,ptr:[27,12],dd6:11,cxx_runtime_arrai:27,addition:[4,16,50,33,21,44,46,8,27,12],"__is_nothrow_assign":27,cl2:46,unari:[46,36,22,8,27,40],act:[3,19,42,21,22,40],attribute_ext_vector_typ:27,industri:3,processor:[0,9,27,31],fooptr:22,routin:[2,3,50,42,12,23,21,13],newexpr:[],gentl:34,disableexpand:8,"0x40":30,setobject:30,terminolog:[],surviv:21,inplac:14,userdefinedconvers:37,strip:[],pivot:29,wincomplet:33,your:[],jai:38,wide_string_liter:8,loc:8,complianc:0,mingw32:[],area:[31,12,42],aren:[26,40,21,36,8],miphoneo:[0,12],overwrit:29,spaceinemptyparenthes:40,strict:[],compliant:31,interfac:[],cfreleas:21,lot:[3,19,12,8,26,21],strictli:[3,31,21,12],broomfield:29,getelem:3,hassingledecl:36,"__builtin_ssubl_overflow":27,svn:[2,10,36,14],uintptr_t:23,afresh:21,verbatim:8,enough:[31,3
,36,12,44,8,26,21,13],"0x700000008000":39,bundl:[34,42],regard:[12,8],tryannotatetypeorscopetoken:8,mdd:31,bos_al:40,getentri:8,mice:8,slowdown:[49,19,23,16],categor:[31,21,30,8],pas_middl:40,faster:[0,16,31,46,42,37,49,9],notat:[22,27,42],labelreturn:39,ternari:[40,8],nameddecl:8,possibl:[0,4,30,8,11,12,13,31,18,19,21,22,23,26,27,33,39,40,42,44,47,49,50],"default":[],acronym:48,"__c11_atomic_fetch_or":27,numberwithunsignedchar:30,ns_requires_sup:12,printfunctionnam:18,"_alignof":27,lowercas:21,block_field_is_block:50,commonli:[27,40,30,42],embed:[31,50,33,44,8,13],deadlock:3,connect:[48,50,13,8],alwaysbreakafterreturntyp:40,superview:12,artifact:24,creat:[],filt:[4,16],multibyt:31,lk_proto:40,bararg:21,commonoptionspars:[36,47],retaincount:21,strongli:[],undergon:31,intro:31,decreas:[11,21],file:[],cov0:23,cov1:23,hw4:12,hw5:12,hw2:12,intra:3,hw0:12,fill:[31,3,40,36,8,21],incorrect:[46,43,44,8,27,12],again:[31,16,50,43,44,36,21],collid:[33,30],"__cxx11":32,googl:[2,16,14,3,19,31,6,
23,49,40],discrimin:[32,31],extract:[17,42,36,39,35,26,27],compel:21,src_vec:27,prepend:39,idiom:8,v7a:26,cleanup:[3,46,21,12,8],poly8_t:27,"0x173af50":36,writabl:0,treatmenet:12,you:[0,2,5,8,9,11,12,31,16,17,18,10,20,23,24,25,26,27,30,14,33,34,35,36,37,38,40,42,43,44,47,48,49,46],path_to_sancov:23,intermedi:[0,49,12,13],freestand:0,poor:[31,33,21],libformat:[],isbar:8,sbpo_nev:40,unresolvedconstructexpr:[],sequenc:[31,33,42,21,23,8,27,11,12,13],cxxconversiondecl:[],push:[31,42,12,8],briefli:[9,21],"0x000000425a50":38,impos:21,reduc:[0,31,39,33,42,21,8,9,27],cpi:29,unbalanc:21,callq:11,lookupt:8,directori:[],woboq_codebrows:48,mask:[11,12,8],arm7tdmi:26,calle:[],mimic:[31,12],mass:[21,30],cpp03:40,potenti:[38,14,16,31,3,39,50,44,42,36,12,22,30,8,10,21],cpp:[38,31,16,44,3,18,40,47,36,17,8,37,13],escap:[],"__unsafe_unretain":21,dst:50,represent:[],all:[],cxxreinterpretcastexpr:[],consider:12,pth:[],illustr:[3,31,42,30,8],forbidden:38,lack:[27,21],typedeftyp:8,month:27,"__builtin_assum
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2,12,44,17,23,24,8,34,49,9,28,11,21],themselv:[38,17,40,33,8,10,13],vtabl:[38,0,31],variat:22,endfunct:37,misspel:13,sophist:[21,43],arminterruptattr:8,offseta1:31,behaviour:[26,12,31],isystem:31,xmm0:12,middl:[40,8],argtyp:27,excess:[31,33],cxx_attribut:27,variad:[],strong:[22,50,21],breakstringliter:40,cf_unknown_transf:21,valu:[],"__counter__":27,"9d6":11,search:[0,41,16,31,18,40,20,33,42,45,46,47,34,9,27,13],block_descriptor_1:50,module_nam:23,binaryoper:[34,42,36],ahead:[26,12,8],vec_add:27,subview:12,observ:[38,1,21],mac:[],prior:[3,50,42,21,12],conversiondecl:[],cxxdeleteexpr:[],transformyyi:8,codebas:[31,40],narrow:[38,46,35,16,36],myasan:16,istypedepend:8,offseta:31,verifyintegerconstantexpress:8,via:[],msp430interruptattr:8,alignconsecutiveassign:40,primit:[],transit:[3,50,33,42,8,12],anytim:31,filenam:[0,4,14,40,33,31,8,37,13],famili:[],heurist:[27,12],dfsan:39,decrement:[3,21],establish:[22,40,42],dangl:22,select:[],aggress:[0,31],erasur:31,cxx_thread_loc:27,mylib:[31,33
,8],povrai:23,distinct:[4,29,33,43,22,8,11,21,13],liber:33,mfloat:26,de4:11,two:[2,1,3,4,36,8,12,13,31,15,18,21,22,23,26,27,29,33,30,38,39,40,42,47,34,46],de6:11,nscomparisonresult:27,rect:30,autonom:23,virt:27,taken:[38,31,29,40,42,21,8,11,12],mpi_send:12,codifi:21,frontendact:[],minor:[27,42,8],reachabl:34,flat:8,wrapper:[39,41,7,8,48,27],desir:[38,14,29,31,36,44,8,26,13],unreduc:34,imsvc:[31,46],"0x7ff3a302a410":41,mozilla:[48,14,40],ranges_for:40,flax:0,create_llvm_prof:31,rtbs_none:40,vi2:27,derivepointeralign:40,flag:[],vi1:27,uncov:43,vi4:27,vi5:27,known:[],objectivec:40,toyclangplugin:48,cach:[0,9,33,27,31],allowshortifstatementsonasinglelin:40,outdent:40,dictat:3,none:[14,31,40,42,21,8,26,12],fatal:[31,20,8],suitabl:[0,31,3,10,8,12],"__fast_math__":31,a_test:40,doccattyp:8,outlin:39,dev:[31,23,21,8],histori:[],nscaseinsensitivesearch:27,remain:[31,29,3,33,36,12,8,27,21],outliv:[22,21],ctoriniti:[],nontriv:21,caveat:[],learn:[],motiv:[31,9,10,12,13],c_aligna:27,def:[49,16],e
ras:3,explod:27,noncopy:31,prompt:31,bogu:[3,8],nonfragil:0,scan:[0,46,21],beforeels:40,challeng:39,registr:21,emiss:[31,21,12],templat:[],"0x4dca89":23,minimum:[12,0,33,21,8],ndrange_t:[],collingbourn:38,phrase:[21,8],mmacosx:[0,12],strlen:[0,8],action:[17,18,50,47,23,24,8,27,13],"0x5aead50":34,atomic_flag:[],inescap:21,huge:[33,8],cours:[50,40,26,27,11,21],goal:[],awkward:21,numberwithint:30,"0x173afe0":36,anoth:[],qconnectlint:48,comfort:21,pt_guard:3,theletterz:30,snippet:[],amd1:31,"_explicit":27,lozano:38,caus:[38,31,29,16,3,39,19,50,33,12,22,7,8,25,49,27,11,21],cxxconstructordecl:[],opt:[27,33,8],kcc:23,simpl:[],unabl:12,noncopyable2:31,regener:31,resourc:[3,33,21,12,8],referenc:[0,1,31,50,33,42,36,22,8,9],algebra:[31,36],objdump:42,iphon:0,variant:[33,11,7,31,8],double__builtin_canonicalizel:27,reflect:[31,12,8],okai:[3,12,36,8],offset:[14,31,50,42,23,11,12],associ:[31,3,39,50,33,42,36,12,17,23,30,8,25,27,21,13],sse4:[33,12],circumst:[12,50,21,8],github:[31,16,19,36,6,37,23,
48,49],dfsan_get_label:[39,7],sse3:26,feasibl:[33,21],ani:[0,1,3,4,36,8,9,11,12,13,14,16,19,21,22,23,24,26,27,29,31,32,33,35,30,37,39,40,42,43,46,49,50],onto:[31,40,11,50,8],proto:40,children:[36,8],"0x173b030":36,tsan:19,ambigu:[42,12,8],cxx_reference_qualified_funct:27,callback:[23,35,36,8],cxx_strong_enum:27,nvidia:26,cxx_init_captur:27,getcxxconstructornam:8,"__block_invoke_10":50,typeinfo:11,help:[0,14,39,19,47,33,31,5,12,48,42,7,36,8,25,26,27,35,21],module_priv:33,"__is_assign":27,merit:21,androideabi:26,soon:[31,23,21,43],tupl:[31,12],config_macro:33,held:[],i386:[44,9,42,16,13],paper:29,vec2:27,polymorph:[38,27,35],vec1:27,hierarchi:[1,42,35,34,11,21],suffer:[9,23,21],foo1:[4,12],foo2:[4,12],foo3:[4,12],style:[],num_regist:12,"0x7f7893912ecd":49,strbuf:12,eabi:26,"0x7fff87fb82d0":16,wrl:43,vardecl:[34,41,42,36],nsdictionari:30,late:21,resort:27,penaltybreakstr:40,pend:31,subtarget:12,sanitizer_stats_path:25,bypass:15,wcdicw:13,fshow:[0,31],might:[31,29,3,40,33,43,12,32,8,48,
26,27,10,21,13],alter:[31,15,7,8,21,13],finer:46,wouldn:36,good:[],"return":[],avaudioqualityhigh:30,typeattr:8,myinclud:27,fstandalon:[0,31],misc:[],pollut:8,untransl:13,objc_returns_inner_point:21,eat:8,afterenum:40,framework:[],subtask:13,pathcompon:30,"__builtin_arm_ldaex":27,account:[40,4,21,42],typedefdecl:41,complain:33,bigger:[14,16],thread_safety_analysis_mutex_h:3,problemat:[19,12],opaqu:[22,50,21,31,8],payer:29,fabi:26,aligna:27,instruct:[0,31,10,33,36,44,23,8,48,26,27,11,12],mysteri:[34,21],easili:[31,3,33,39,23,8,48,27,13],token:[],"0x28d0":11,truthi:12,requires_shared_cap:3,fulli:[0,16,31,43,12,8,49,27,11,21,13],intervent:33,atomic_long:[],dif:31,truncat:[39,4,11,12],initvarnam:36,astmatchfind:36,interleav:[],dcmake_cxx_compil:37,offset2:31,additionalmemb:8,hard:[2,49,31,3,33,36,8,26,28,12],procedur:[3,21],realli:[31,40,50,21,8,12,13],fsplit:12,linkag:[0,1,12,8],finish:[35,43,13],expect:[38,31,49,16,44,19,41,43,21,22,40,35,8,26,27,12,13],stabl:[31,46,20,33,24,11],http:
[0,16,2,32,19,31,36,6,23,48,49,10,40],operation:12,beyond:[22,21,8],todo:31,orient:[4,29,10],exprresult:8,isfrommainfil:36,architectur:[],massiv:21,binaryoperatorstyl:40,regehr:44,mathia:29,publish:50,academia:44,interrupt_fram:12,binpackargu:40,ni_non:40,print:[38,0,15,16,31,18,19,33,42,36,44,23,8,37,49,27,13],astnod:8,occurr:21,ftl:[0,31],"__has_trivial_assign":27,raii:3,xarch_i386:13,mmx:12,advanc:[4,27,36,47],upon:[38,31,50,33,30,12,22,21],team:46,suspici:[31,12,44],effect:[31,1,40,33,4,12,22,8,26,27,11,21],fdelai:[31,43],reason:[31,16,3,19,33,12,39,24,8,49,27,21,13],base:[],believ:8,offsetb:31,put:[],gcc_version:31,canon:[],earliest:21,asm:[31,27,12],basi:[31,27,33,12,8],thrown:[0,22],targetinfo:[31,8],"__atomic_consum":27,allowshortcaselabelsonasinglelin:40,overloadedoperatorkind:8,thread:[],"__dfsw_f":7,omit:[49,16,44,22,8,26,12],objc_precise_lifetim:21,perhap:[33,12],ls_cpp11:40,thread_sanit:[],iff:50,circuit:[39,27],h264ref:23,undergo:[21,8],assign:[],rtbs_all:40,feed:[31,2
3],mylsan:16,major:[40,33,42,43,8,27,13],boolliter:[],coverage_interfac:23,readerunlock:3,obviou:[13,21,8],mylogg:33,feel:[48,46,36],alignconsecutivedeclar:40,number:[],placehold:[27,12],"__libc_start_main":[49,16,6],least:[38,31,40,21,23,8,37,27,11,12],stdlib:[0,15,33,6],dylib:0,num_team:[],alwaysbreak:40,miss:[],"0x4a2e0c":23,buffer_idx:12,"__is_destruct":27,"__dfsw_memcpi":[39,7],cf_audited_transf:21,vararg:[],num_predef_type_id:42,interact:[38,0,33,42,8,37,21,13],modulemap:33,objectatindex:30,strip_path_prefix:23,"_block_byref_foo":50,cxxmethoddecl:[],x86v7a:26,dest_label:7,cxx_noexcept:27,scheme:[],format_vers:[],store:[],unalign:[],"__include_level__":27,vgpr:12,stdout:[14,31],option:[],relationship:21,behind:[3,42,13,12,8],tom:38,selector:[42,30,21,8,27,12],illeg:[12,8],maxemptylinestokeep:40,pervas:21,pars:[],wextra:31,consult:31,induc:8,myclass:[3,35],attract:9,cxx_generalized_initi:27,"__sanitizer_cov":23,eventu:[33,7,8],std:[38,0,1,2,17,18,40,47,33,31,32,46,8,27,10,21],al
beit:[],kind:[],grew:8,aaa:40,prebuilt:[1,33],whenev:[31,3,40,42,36,12,8,21],gotten:[],seamlessli:21,cleanupandunlock:3,"__block_invoke_1":50,corefound:[27,21],cost:[29,40,27,42,44,23,9,21],"__block_invoke_5":50,block_siz:50,diaggroup:8,reinterpretcastexpr:[],arrang:11,usualunaryconvers:8,hasoperatornam:36,penaltyreturntypeonitsownlin:40,comput:[0,31,39,21,22,8,12,13],uncontroversi:21,deleg:[],strengthen:11,balanceddelimitertrack:8,"__const__":27,packag:[26,33,16],matchfind:36,loopconvert:36,consol:31,dedic:[4,29,42],"0x10":11,sell:50,flto:[25,0,1,38,31],unintend:33,ext_vector_typ:27,equival:[0,31,46,33,30,21,22,8,27,12],violat:[38,0,1,3,33,8,27,11,21],"__objc_y":30,stapl:8,undeclar:3,blockreturningvoidwithvoidargu:22,accessor:[13,21,30,8],subnam:33,useless:33,"__has_trivial_copi":27,exclusive_trylock_funct:3,techniqu:[31,42,8],command:[],getsourcemanag:36,hasloopinit:36,brace:[31,27,40,21,8],coff:[12,42],"__sanitizer_get_number_of_count":23,recurs:[34,31,33,36,8],"__c11_atomic_thre
ad_f":27,distribut:[0,50,26],exec:[0,16,31,12],targetaddr:11,previou:[0,31,19,47,33,36,21,46,8,37,12],reach:[18,42,36,44,34,27,21],"__builtin_nontemporal_load":27,setjmp:[],undefin:[],plai:[4,23,12],"_z3foov":31,whether:[0,1,3,36,7,8,11,12,13,31,16,17,19,21,22,27,28,29,33,30,38,39,40,42,47,49,50],image2d_array_depth_t:[],functiondecl:[34,41,42,8],maco:12,alpha:14,sbpo_alwai:40,splat:27,cxxconstructornam:8,appear:[38,31,50,33,30,21,22,43,8,37,27,11,12],code16gcc:31,frontendpluginregistri:18,clear:[3,33,12,23,8,27,21],cover:[31,4,46,33,43,23,7,8,26,11,21],destruct:[],roughli:[9,13,8],"__int128":41,nrvo:12,tabwidth:40,supertyp:21,abnorm:21,clean:8,newvalu:30,"0x7fff87fb82c8":16,weigh:21,"__block_dispose_foo":50,microsoft:[],shared_object_with_vptr_failur:44,visibl:[38,0,12,8],ctag:48,think:[3,27,40,8],"_z5tgsind":12,"_z5tgsine":12,gold:[25,38],namespaceindent:40,"0x173b008":36,xcode:24,rerun:[28,24],"__try":43,entrypoint:21,ns_returns_retain:[27,21,12],myattribut:8,particularli:[31,33,
42,43,26,12,13],reus:[4,21,8],fine:[31,27,44,21,8],find:[0,4,36,8,11,12,14,16,17,10,21,23,26,29,31,33,35,37,38,40,42,43,47,49],"__builtin_canonicalizef":27,impact:[44,33,43,8],autocleanup:3,coerc:30,processinfo:30,northern:12,offsetn:31,writer:[3,4],solut:[28,21,36,8],peculiar:21,knowledg:[35,33,21,36,8],c89:[0,31],"__dfsan_arg_tl":39,darwin:[],ymm:12,sure:[16,49,3,40,36,6,44,8,26,13],namespaceindentationkind:40,cxxfunctionalcastexpr:[],hit:37,firstid:36,addobject:30,parenexpr:34,"__real__":27,express:[],blank:31,"__c11_atomic_load":27,simplist:27,fastest:0,finit:[],wmicrosoft:[],fplugin:18,extern_c:33,pas_right:40,cexpr:37,lit_test:19,elf:[26,23,42,12,31],verifydiagnosticconsum:8,initvar:36,lk_none:40,keyword:[31,40,27,30,21,43,8,9,12],crt:12,cxx_variable_templ:27,synthes:[50,21,8],interconvers:21,"__cfi_check":11,"0x5aead88":34,captured_i:50,common:[],assert_shared_lock:3,i32:39,remov:[31,40,33,30,21,8,27,10,12,13],wrote:[48,8],gobmk:23,set:[0,1,3,4,36,8,10,11,12,13,14,16,19,21,22
,23,24,25,26,27,31,32,33,30,37,38,39,40,42,46,47,48,49,50],msan_new_delet:49,seq:12,creator:35,cleverli:36,sensit:[39,23,12,8],temporari:[0,21,31,13],decompos:13,jsqs_singl:40,atexit:23,"_size_t":33,helpmessag:[36,47],signifi:21,arg:[0,31,32,18,30,39,8,12,13],float4:27,reserv:[50,16,39,19,33,21,22,49,27,12],horizont:40,arm:[],float2:27,seh:43,strchr:21,"__sanitizer_cov_dump":23,horrif:33,inconveni:21,nscompar:27,misalign:44,ftrapv:[0,44],someth:[31,50,36,23,35,8,48,26,27,21,13],stdatom:27,struct:[],fmax:31,smallest:14,ftime:0,nontrivi:21,"__builtin_ssubll_overflow":27,cxxtrystmt:[],"__block_invoke_4":50,altern:[31,29,3,20,33,27,47,9,28,12],signatur:[31,4,50,12,7,27,11,21],mylocalnam:12,syntact:[14,21,24,8,37,12],numer:[27,42,30,8],complement:10,sole:[12,21,8],"0x7f78938b5c25":49,sigil:21,disallow:[31,21,12],operationmod:27,incident:21,imp:3,consumpt:8,solv:[],classnam:16,aligned_double_ptr:12,key1:40,"__builtin_trap":[31,27],"0x7fffffff":44,water:21,last:[0,31,44,42,36,21,22,23,8,37
,26,27,12,13],delimit:[0,40,21,8],interprocedur:[],alon:[10,8,29,6],event:[50,23,21,8],fielddecl:8,uglier:33,entertain:31,context:[],"0x5aeacf0":34,coprocessor:12,my_memcpi:12,whole:[31,1,46,33,34,11,12],dfsan_set_label:[39,7],load:[],mutexunlock:3,simpli:[50,4,16,3,19,33,36,6,23,30,8,49,27,10,11,21,13],reject:[46,43,30,13],point:[],instanti:[],pcm:33,format:[],sweep:29,unrealist:33,header:[],alloca:39,uniniti:[38,31,50,12,49],littl:[42,36,8,11,21,13],shutdown:23,linux:[31,29,16,39,19,6,44,23,7,49,26,28,40],yourattr:8,throughout:[31,33,42],backend:[46,31,27,12],swi:12,blog:44,faithfulli:21,sine:12,java:[14,40],"_atom":27,"0x4652a0":23,static_cast:[38,27,10],"11ba":11,"_block_byref_voidblock":50,pchintern:33,due:[38,19,33,42,12,22,27,28,21],empti:[0,1,31,40,33,15,30,22,46,8,12],sinc:[31,46,29,3,50,27,33,42,36,12,23,30,8,48,26,9,28,21,13],hascustompars:8,whom:50,spaceaftercstylecast:40,nameofcfunctiontosuppress:16,txt:[17,15,23,36],wambigu:31,"__builtin_bitreverse64":27,"141592654f":3
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33,21,22,23,8,26,27,12],bankaccount:3,decor:27,cl_khr_fp64:46,do_somthing_completely_differ:40,coverage_dir:23,"__c11_atomic_exchang":27,minim:[31,19,33,42,43,11],ca7fd5:11,belong:[31,40,33,12,7,21],cygm:31,x64:[31,12,43],"_block_byref_obj_keep":50,clangattremitt:8,"__builtin_addcl":27,octal:31,recipi:21,"__builtin_addcb":27,multicor:9,conflict:[],"__block_literal_10":50,fmodul:[27,33],x86:[],nsmakerang:27,optim:[],unsequenc:21,getasidentifierinfo:8,optin:46,wherea:[38,39,12,26,27,21],domin:[39,9],inflat:21,librai:8,unintention:21,moment:[3,31,29],fborland:0,user:[],createreplac:8,wfoo:31,wherev:[22,12,36,8],triag:31,recent:[37,42,21,36,8],conditionvarnam:36,noninfring:50,task:[31,23,35,13],machineri:[31,9,33,21,8],discourag:[3,21],older:[22,49,12,30,42],entri:[],bad_arrai:16,parenthes:[31,46,40,36,21,30,8,27,12],unscop:46,person:[40,50],cheer:21,expens:[46,27,33,42],uint32_t:27,jsqs_doubl:40,organization:10,fcolor:31,propos:[39,33],always_inlin:[27,12],cxx_relaxed_constexpr:27,safe
stack:[],cout:10,"__block_copy_foo":50,anonym:[37,16,21,8],camel:27,frontendactionfactori:47,obscur:31,constructorinitializerindentwidth:40,collabor:3,v6m:26,bzero1:12,xclang:[34,18,20,31,8],"__need_size_t":33,simd:[],joinedarg:13,"__sanitizer_get_total_unique_coverag":23,nsstring:[27,12,30],objectforkei:30,forloop:36,cut:34,"0x173afc8":36,also:[],javascriptquot:40,asan_interfac:23,tok:8,restructuredtext:8,theoret:[9,21],nmap:37,autofdo:31,notifi:[42,8],str:31,reflowcom:40,indentbrac:40,input:[0,14,39,40,47,33,31,36,23,8,27,10,13],subsequ:[0,16,21,8,27,12,13],e0b:11,app:43,finder:36,callexpr:42,bin:[31,16,17,40,41,36,47,37,26,28],gnueabihf:26,evaluat:8,vendor:[26,27,33,8],obsolet:12,transpar:[],bif:3,big:23,getcxxconversionfunctionnam:8,"__cfi_slowpath":11,judgement:8,nsrespond:12,"0b10010":27,spacesincstylecastparenthes:40,comparisonopt:27,mitig:[9,27,13],crisp:48,"0x4af01b":6,characterist:8,infil:17,snowleopard:50,needsclean:8,cxxnullptrliteralexpr:[],ivar:21,lost:[23,35],copy_una
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11,21],object:[],method2:12,nitti:24,"__c11_":27,disableformat:40,martin:[37,38,36],viabl:[31,12],"__c11_atomic_fetch_xor":27,step:[],mwatcho:12,"_ivar":21,thisexpr:[],getmu:3,shorten:21,valuewithbyt:30,suboper:21,fooref:22,classref:31,"0x4da26a":6,most:[0,1,3,36,8,11,12,13,31,16,17,10,21,26,27,29,33,35,38,39,40,42,43,44,34,49,46],soft:26,usetabstyl:40,cxxcatchstmt:[],vend:33,ioctl:12,maxlen:12,idl:[],modal:8,"32bit":31,arraywithobject:30,prologu:[31,12],soplex:23,gamma:[31,8],plan:[2,9,33,19,24],deem:21,real:[31,16,19,47,33,36,8,49,27,21,13],string1rang:27,primarili:[10,33,42,21,8,12],foper:31,digraph:31,visit:[17,0,8],within:[],bos_non:40,breakafterjavafieldannot:40,newastconsum:37,movab:11,bsd:31,gcc5:32,ensur:[29,3,33,42,36,12,39,30,8,21],chang:[],qobject:48,occupi:38,mke:1,"0x5aead68":34,"0x00000000a360":19,wunus:12,errno:[0,33],"0x173b240":36,question:[],elem:39,fast:[],custom:[14,15,31,40,47,33,36,7,8,21],security_critical_appl:27,lldb:31,handler:[18,23,29,12,8],arithmet:[],c
harg:50,hasunaryoperand:36,forward:[],mach:42,offsetb1:31,createastdeclnodelist:37,bs_gnu:40,properli:[31,8],vprintf:12,mvc:8,stringiz:8,lint:24,wno:31,int8_t:27,navig:48,pwd:37,visitcxxrecorddecl:17,link:[],translat:[],int3:[27,11],atom:[],"__dsb":27,line:[],existingblock:50,fortytwolonglong:30,sdk:31,info:[0,16,31,33,43,44,8],concaten:[27,8],utf:[30,8],"0x000000000000":39,nonassign:40,"9b1":11,"0x5aeac10":34,caller:[],nameofthelibrarytosuppress:16,temporaryobjectexpr:[],familar:34,instantan:21,reorder:[27,33,21],compilerinst:[17,18],err_typecheck_invalid_operand:8,highlight:[31,42,8],similar:[38,14,4,31,3,40,27,33,42,43,12,22,23,47,8,49,9,10,11,21],xmmintrin:27,curs:37,metal:26,parser:[],favoritecolor:30,doesn:[31,44,3,40,33,36,12,32,8,37,26,21,13],repres:[31,46,44,50,27,42,36,21,22,23,35,30,8,9,11,12,13],"char":[31,4,16,44,17,39,50,47,36,22,23,30,8,49,27,11,12],incomplet:[27,21],int_max:[40,30],guarante:[32,20,33,30,12,27,21],notinbranch:12,"__builtin_va_arg_pack":31,laszlo:29,mi
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,36,8,27,10,21],hello:[50,20,42,30,22,43,8],prototyp:[50,27,12],pretoken:[],unevalu:[12,8],partial:[40,27,12,43],undefinit:33,queri:[46,33,42,21,35,8,27,12,13],codegenfunct:8,strex:27,objc_boxed_express:30,parsearg:18,addmatch:36,edx:[11,12],ut_nev:40,demangl:[4,23],"_size":30,stret:50,compact:[31,23,42],stdafx:46,lifetim:[],secur:[],simdlen:12,ulimit:[49,19,16],throwexpr:[],functionpoint:22,friendli:4,send:[31,30,48,25,27,21],"__size_type__":33,vptr:[38,31,44],carefulli:[10,21,8],"__builtin_arm_stlex":27,attributerefer:8,tr1:10,aris:[50,21],through:[],sent:[22,21],actiontyp:18,getenv:30,unzip:26,"0x170fa80":36,vla:[31,44],dxr:48,i486:0,"__is_interface_class":27,mous:8,reinterpret:11,implicitli:[38,31,39,33,30,21,22,8,27,28,12],inlinedfastcheck:11,relev:[1,17,8,26,27,11],createstackrestorepoint:29,tri:[31,3,32,8,48,21,13],span:40,magic:[26,15,23],"__stdc__":42,"0b10110110":27,"_msc_full_ver":31,meant:[31,4,33,42,21,8,12],complic:[],jne:11,cxx_override_control:27,uuid:1,fewer:[46,12]
,"try":[0,4,16,31,3,40,36,22,35,43,8,37,49,10,11,21,13],nsfoo:21,race:[31,3,19,12,22,21],exprerror:8,appar:[21,12],initializer_list:27,freed:[21,16],nsmutablearrai:30,gettyp:8,pleas:[38,0,29,31,18,46,27,42,30,7,8,48,9,12],experienc:33,impli:[31,1,40,50,33,42,36,21,46,12,13],smaller:[0,4,16,31,8,11,21],fortun:43,rtbs_alldefinit:40,"0x3":11,natur:[31,9,42,21,8],odr:[1,12],cfe:[],fmsc:[0,31],jump:11,"__final":43,bad_foo:15,equal:[31,15,39,36,21,44,43,8,27,11,12],download:[14,46,36,26],afterclass:40,"__int128_t":41,odd:[23,43],click:8,append:[4,7,30],compat:[],index:[31,4,45,34,33,42,36,44,30,8,48,27,11,12,13],turn:[0,15,29,16,31,3,50,33,36,8,34,27,21,13],eng:23,compar:[36,12,30,8,27,9,13],captured_voidblock:50,resembl:[34,35],dwarfstd:31,block_decl:22,"__cdecl":31,lk_java:40,astar:23,blerg:26,experiment:[],fobjc:[0,21],imaginari:27,deduc:[27,10,21],whatev:[31,42,13],penalti:[40,11,21],dosometh:3,construct:[31,46,50,42,30,21,22,43,8,27,12,13],chose:21,elect:21,despit:[22,9,12],commentpr
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],error_cod:12,paraamet:12,xpreprocessor:0,deleteexpr:[],sibl:[49,16],usual:[31,29,16,49,3,18,19,50,33,10,30,12,22,43,8,34,26,27,28,21,13],"_z1gp1a":25,ubsan_opt:[44,23],distanc:11,statementmatch:36,arg_kind:12,less:[38,29,44,19,42,36,21,40,8,10,12],"boolean":[3,23,27,12,30],hybrid:0,glut:21,linkonce_odr:39,"__atomic_acquir":27,obtain:[],mistaken:31,objc_fixed_enum:27,derived1:12,formatstyl:[2,40],fooarg:21,simultan:[3,21],lex:[2,9,33,8],addaftermainact:18,web:[48,31,46,38,8],s32:23,superset:[21,8],swig:3,clangast:42,onward:[31,4,46,44],makefil:[37,26,28,47,31],inbranch:12,speedup:15,integerliter:[34,41,42,36],script:[],add:[],divis:[31,44],handiwork:36,foobar:31,collis:[33,11,21],"0x00000000c790":19,"_openmp":46,match:[],boom:16,fnb:31,ctrl:14,rememb:[38,16,8],unintrus:12,dest:[],mpi_datatyp:12,agnost:[3,21],disproportion:31,tc2:31,tc3:31,fragment:8,tc1:31,assert:[3,46,33,7,27,12],built:[38,0,1,14,47,33,31,36,42,23,24,8,49,27,11,13],testb:11,five:[13,21,8],tice:38,burden:12,use_mul
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\ No newline at end of file
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