[cfe-dev] unable to parse header files

[Peter Collingbourne]

Hi Alex,

On Sat, Dec 25, 2010 at 01:13:42PM +0100, Alexander Christ wrote:
> /usr/include/c++/4.4/cstddef:50:11: error: no member named 'ptrdiff_t' in
> the global namespace
>   using ::ptrdiff_t;
>         ~~^
> /usr/include/c++/4.4/cstddef:51:11: error: no member named 'size_t' in the
> global namespace
>   using ::size_t;
>         ~~^

You need to set HeaderSearchOptions::ResourceDir so that Clang can
find its own header files including stddef.h.  It's proably picking
up another stddef.h here which does not define the symbols correctly.
Something like this (CLANG_VERSION_STRING is defined by the header
but you need to define LLVM_PREFIX yourself, which is the LLVM/Clang
installation prefix):

#include "clang/Basic/Version.h"
...
headerSearchOptions.ResourceDir = LLVM_PREFIX "/lib/clang/" CLANG_VERSION_STRING;

> In file included from test.cpp:2:
> In file included from /usr/include/c++/4.4/map:59:
> In file included from /usr/include/c++/4.4/bits/stl_tree.h:62:
> In file included from /usr/include/c++/4.4/bits/stl_algobase.h:63:
> /usr/include/c++/4.4/bits/cpp_type_traits.h:80:12: error: unknown type name
> 'bool'
>   template<bool>
>            ^
> /usr/include/c++/4.4/bits/cpp_type_traits.h:85:25: error: use of undeclared
> identifier 'true'
>     struct __truth_type<true>

>From your code:
>     languageOptions.CPlusPlus= 1;

You need to set other language options for C++, including
LangOptions::Bool.  You can set all the correct language options
automatically using CompilerInvocation::setLangDefaults:

CompilerInvocation::setLangDefaults(languageOptions, IK_CXX);

Thanks,
-- 
Peter