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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang fatal error using __declspec(allocator) with -O3 : "error in backend: invalid symbol redefinition""
href="https://bugs.llvm.org/show_bug.cgi?id=43695">43695</a>
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<th>Summary</th>
<td>clang fatal error using __declspec(allocator) with -O3 : "error in backend: invalid symbol redefinition"
</td>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>9.0
</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>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>sylvain.audi@ubisoft.com
</td>
</tr>
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>I discovered this bug with clang 9.0.0, under windows. It seems to be there in
trunk too.
Note that removing the _declspec(allocator), the expression in the alloc() call
parameter, or even the call to f2() will compile.
F:\>type test.cpp
__declspec(allocator) void *alloc(unsigned int size);
void f2();
void f1(unsigned int *size_ptr) {
void *hg = alloc(size_ptr ? *size_ptr : 1UL);
f2();
}
F:\>
F:\>
F:\>clang++.exe -cc1 -S -x86-asm-syntax=intel -debug-info-kind=limited
-fms-extensions -O3 -x c++ test.cpp
fatal error: error in backend: invalid symbol redefinition
Stack dump:
0. Program arguments: clang++.exe -cc1 -S -x86-asm-syntax=intel
-debug-info-kind=limited -fms-extensions -O3 -x c++ test.cpp
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module 'test.cpp'.
4. Running pass 'X86 Assembly Printer' on function '@"?f1@@YAXPEAI@Z"'</pre>
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