[Modules TS] MSVC std library produces ambiguous type_info reference when including module with ms-compatibility (original) (raw)

Extended Description

When compiling an project on windows using the MSVC standard library I get an ambiguous reference to type_info:

I have attached an archive of the most simple repro of the issue. It also includes the ii file from save-temps.

Error Message:
In file included from main.cpp:1:
In file included from C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include\iostream:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include\istream:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include\ostream:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include\ios:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include\xlocnum:10:
In file included from C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include\streambuf:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include\xiosbase:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include\xlocale:8:
In file included from C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include\stdexcept:6:
In file included from C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include\exception:27:
In file included from C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include\vcruntime_exception.h:10:
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include\eh.h:52:14: error:
reference to 'type_info' is ambiguous
type_info const& _Type,
^
note: candidate found by name lookup is 'type_info'
note: candidate found by name lookup is 'type_info'
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include\eh.h:52:14: error:
reference to 'type_info' is ambiguous
note: candidate found by name lookup is 'type_info'
note: candidate found by name lookup is 'type_info'