[llvm] r216701 - Introduce -DLLVM_USE_SANITIZER=Undefined CMake option to build UBSan-ified version of LLVM/Clang.

[Alexey Samsonov]

Author: samsonov
Date: Thu Aug 28 19:50:36 2014
New Revision: 216701

URL: http://llvm.org/viewvc/llvm-project?rev=216701&view=rev
Log:
Introduce -DLLVM_USE_SANITIZER=Undefined CMake option to build UBSan-ified version of LLVM/Clang.

I've fixed most of the simple bugs and currently "check-llvm" test suite
has 26 failures, and "check-clang" suite has 5 failures.

Modified:
    llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
    llvm/trunk/docs/CMake.rst
    llvm/trunk/test/lit.cfg

Modified: llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/cmake/modules/HandleLLVMOptions.cmake?rev=216701&r1=216700&r2=216701&view=diff
==============================================================================
--- llvm/trunk/cmake/modules/HandleLLVMOptions.cmake (original)
+++ llvm/trunk/cmake/modules/HandleLLVMOptions.cmake Thu Aug 28 19:50:36 2014
@@ -363,6 +363,10 @@ if(LLVM_USE_SANITIZER)
       if(LLVM_USE_SANITIZER STREQUAL "MemoryWithOrigins")
         append("-fsanitize-memory-track-origins" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
       endif()
+    elseif (LLVM_USE_SANITIZER STREQUAL "Undefined")
+      append_common_sanitizer_flags()
+      append("-fsanitize=undefined -fno-sanitize=vptr -fno-sanitize-recover"
+              CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
     else()
       message(WARNING "Unsupported value of LLVM_USE_SANITIZER: ${LLVM_USE_SANITIZER}")
     endif()

Modified: llvm/trunk/docs/CMake.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/CMake.rst?rev=216701&r1=216700&r2=216701&view=diff
==============================================================================
--- llvm/trunk/docs/CMake.rst (original)
+++ llvm/trunk/docs/CMake.rst Thu Aug 28 19:50:36 2014
@@ -288,8 +288,8 @@ LLVM-specific variables
 
 **LLVM_USE_SANITIZER**:STRING
   Define the sanitizer used to build LLVM binaries and tests. Possible values
-  are ``Address``, ``Memory`` and ``MemoryWithOrigins``. Defaults to empty
-  string.
+  are ``Address``, ``Memory``, ``MemoryWithOrigins`` and ``Undefined``.
+  Defaults to empty string.
 
 **LLVM_BUILD_DOCS**:BOOL
   Enables all enabled documentation targets (i.e. Doxgyen and Sphinx targets) to

Modified: llvm/trunk/test/lit.cfg
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/lit.cfg?rev=216701&r1=216700&r2=216701&view=diff
==============================================================================
--- llvm/trunk/test/lit.cfg (original)
+++ llvm/trunk/test/lit.cfg Thu Aug 28 19:50:36 2014
@@ -96,7 +96,7 @@ for symbolizer in ['ASAN_SYMBOLIZER_PATH
         config.environment[symbolizer] = os.environ[symbolizer]
 
 # Propagate options for sanitizers.
-for options in ['ASAN_OPTIONS']:
+for options in ['ASAN_OPTIONS', 'UBSAN_OPTIONS']:
     if options in os.environ:
         config.environment[options] = os.environ[options]