VS build failure

[Chandler Carruth]

On Tue, Oct 1, 2013 at 11:45 AM, Bob Wilson <bob.wilson at apple.com> wrote:

> If libcxx doesn't build with Visual Studio, then Chandler's patch to
> enable it should be changed to make it conditional on not using VS.
>  Chandler, can that be done?
>

Yep, just been stuck in meetings. I'll get this after lunch if none beat me
to it. Sorry for the delays.

>
> On Oct 1, 2013, at 8:56 AM, jahanian <fjahanian at apple.com> wrote:
>
> We can disable build of libcxx on our VS buildbots. But, we would like to
> hear better alternatives/suggestions, if any.
>
> - Thanks, Fariborz
>
>
> On Sep 30, 2013, at 9:03 AM, jahanian <fjahanian at apple.com> wrote:
>
> HI Chandler,
> This patch
>
> Enable libcxx as part of the top level CMake build when it is checked
> out in projects. This appears to be working on my system, and I will be
> watching build bots to see if there are any issues on other platforms.
>
>
> Changed files
>
>    - *src/projects/CMakeLists.txt*
>
>
> causes all libcxx compiles to fail on VS buildbot. AN example of
> diagnostics would be:
>
>  hash.cpp
> C:/public/zorg/buildbot/smooshlab/slave-0.8/.../src/projects/libcxx/include\type_traits(927):
> error C2681: 'add_rvalue_reference<_Tp*>::type' : invalid expression type
> for dynamic_cast
> [C:\public\zorg\buildbot\smooshlab\slave-0.8\...\clang-build\210328\projects\libcxx\lib\cxx.vcxproj]
> C:/public/zorg/buildbot/smooshlab/slave-0.8/.../src/projects/libcxx/include\type_traits(927):
> error C2681: 'add_rvalue_reference<_Tp*>::type' : invalid expression type
> for dynamic_cast
> [C:\public\zorg\buildbot\smooshlab\slave-0.8\...\clang-build\210328\projects\libcxx\lib\cxx.vcxproj]
> C:/public/zorg/buildbot/smooshlab/slave-0.8/.../src/projects/libcxx/include\type_traits(927):
> error C2681: 'add_rvalue_reference<_Tp*>::type' : invalid expression type
> for dynamic_cast
> [C:\public\zorg\buildbot\smooshlab\slave-0.8\...\clang-build\210328\projects\libcxx\l
> ib\cxx.vcxproj]C:/public/zorg/buildbot/smooshlab/slave-0.8/.../src/projects/libcxx/include\type_traits(1404):
> error C2516: 'std::common_type<_Tp>::type' : is not a legal base class
> [C:\public\zorg\buildbot\smooshlab\slave-0.8\...\clang-build\210328\projects\libcxx\lib\cxx.vcxproj]
>           with
>           [
>               _Tp=
>           ]
>
> C:/public/zorg/buildbot/smooshlab/slave-0.8/.../src/projects/libcxx/include\type_traits(1328)
> : see declaration of 'std::common_type<_Tp>::type'
>           with
>           [
>               _Tp=
>           ]
>
> - Fariborz
>
>
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