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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Missing leading underscore for 32-bit stdcall exports"
href="https://bugs.llvm.org/show_bug.cgi?id=35733">35733</a>
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<th>Summary</th>
<td>Missing leading underscore for 32-bit stdcall exports
</td>
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<th>Product</th>
<td>lld
</td>
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<th>Version</th>
<td>unspecified
</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>
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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>COFF
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>dmajor@mozilla.com
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, martin@martin.st, ruiu@google.com
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<pre>This issue seems to be related to these comments:
<a href="https://github.com/llvm-mirror/lld/commit/8d204330ce9e409daa35122ab8f7f41ad21ec7a5#diff-eebfbebe9c16932e0adf459e31f5428fR44">https://github.com/llvm-mirror/lld/commit/8d204330ce9e409daa35122ab8f7f41ad21ec7a5#diff-eebfbebe9c16932e0adf459e31f5428fR44</a>
<a href="https://github.com/llvm-mirror/llvm/blame/4604874612fa292ab4c49f96aedefdf8be1ff27e/lib/Object/COFFModuleDefinition.cpp#L76">https://github.com/llvm-mirror/llvm/blame/4604874612fa292ab4c49f96aedefdf8be1ff27e/lib/Object/COFFModuleDefinition.cpp#L76</a>
This trips some fatal assertions in Firefox, where the sandbox code (taken from
Chromium) tries to do things like `GetProcAddress(...,
"_TargetNtMapViewOfSection@44")`.
---
E:\repro\mangle>type hi.cpp
extern "C" __declspec(dllexport) __stdcall void Test(int) { }
int main() { return 0; }
E:\repro\mangle>clang-cl -m32 -c hi.cpp
E:\repro\mangle>lld-link -nodefaultlib -entry:main hi.obj
E:\repro\mangle>llvm-readobj -coff-exports hi.exe | findstr Test
Name: Test@4 <--- no underscore
E:\repro\mangle>link -nologo -nodefaultlib -entry:main hi.obj
Creating library hi.lib and object hi.exp
E:\repro\mangle>llvm-readobj -coff-exports hi.exe | findstr Test
Name: _Test@4 <--- with underscore</pre>
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