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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Custom OpenMP reduction in C++ template causes SEGFAULT at compile time"
href="https://bugs.llvm.org/show_bug.cgi?id=34321">34321</a>
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<th>Summary</th>
<td>Custom OpenMP reduction in C++ template causes SEGFAULT at compile time
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>4.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>MacOS X
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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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>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>s6jaschu@uni-bonn.de
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=19040" name="attach_19040" title="Crash report">attachment 19040</a> <a href="attachment.cgi?id=19040&action=edit" title="Crash report">[details]</a></span>
Crash report
The following reduced test case does crash clang:
struct Summary {
void merge(const Summary& other) {}
};
template <typename K>
void work() {
Summary global_summary;
#pragma omp declare reduction(+ : Summary : omp_out.merge(omp_in))
#pragma omp parallel for reduction(+ : global_summary)
for (int k = 1; k <= 100; ++k) {
}
}
struct A {};
int main(int argc, char** argv) {
work<A>();
return 0;
}
I did compile it with "LDFLAGS="-L/usr/local/opt/llvm/lib
-Wl,-rpath,/usr/local/opt/llvm/lib" /usr/local/opt/llvm/bin/clang++ -std=c++11
-fopenmp=libomp main.cpp" using the homebrew version of llvm on macOS.</pre>
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