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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang-cl warns on constructs in <string>"
href="https://llvm.org/bugs/show_bug.cgi?id=30332">30332</a>
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<tr>
<th>Summary</th>
<td>clang-cl warns on constructs in <string>
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>froydnj@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=17226" name="attach_17226" title="preprocessed source and runscript">attachment 17226</a> <a href="attachment.cgi?id=17226&action=edit" title="preprocessed source and runscript">[details]</a></span>
preprocessed source and runscript
The attached tarball contains a preprocessed file and a script, 'run', to
compile the preprocessed file. I've truncated the preprocessed file from the
full code to just the part that produces the warning. With r280838, compiling
with clang-cl produces:
In file included from c:/m-c/devtools/shared/heapsnapshot/CoreDump.pb.cc:6:
In file included from c:/m-c/devtools/shared/heapsnapshot/CoreDump.pb.h:8:
In file included from
c:/m-c/obj-clang-cl-optimized/dist/stl_wrappers\string:63:
C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\string(668,15):
warning: user-defined literal suffixes not starting with '_' are reserved
[-Wuse
r-defined-literals]
inline string operator "" s(const char *_Str, size_t _Len)
^
C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\string(673,16):
warning: user-defined literal suffixes not starting with '_' are reserved
[-Wuse
r-defined-literals]
inline wstring operator "" s(const wchar_t *_Str, size_t _Len)
^
C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\string(678,18):
warning: user-defined literal suffixes not starting with '_' are reserved
[-Wuse
r-defined-literals]
inline u16string operator "" s(const char16_t *_Str, size_t _Len)
^
C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\string(683,18):
warning: user-defined literal suffixes not starting with '_' are reserved
[-Wuse
r-defined-literals]
inline u32string operator "" s(const char32_t *_Str, size_t _Len)
^
4 warnings generated.
What puzzles me is that the same set of warnings is not produced when compiling
so simple a file as:
#include <string>
Even if you preprocess a file containing the above #include and substitute it
in place of CoreDump.pb.i in the provided 'run' script, you don't get the same
warnings.
My understanding is that clang-cl isn't supposed to warn for constructs in
system headers, so this seems like something is going wrong in the warning
code.</pre>
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