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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [Modules TS] MSVC std library produces ambiguous type_info reference"
href="https://bugs.llvm.org/show_bug.cgi?id=39052">39052</a>
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<th>Summary</th>
<td>[Modules TS] MSVC std library produces ambiguous type_info reference
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>7.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Modules
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>mwasplund@gmail.com
</td>
</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<pre>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'</pre>
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