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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Infinite loop while parsing OpenMP directive"
href="https://llvm.org/bugs/show_bug.cgi?id=25221">25221</a>
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<tr>
<th>Summary</th>
<td>Infinite loop while parsing OpenMP directive
</td>
</tr>
<tr>
<th>Product</th>
<td>OpenMP
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Runtime Library
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>sfantao@us.ibm.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>While attempting to compile this code (bla.cpp):
//##################
int nested(int a){
#pragma omp parallel
++a;
auto F = [&](){
#pragma omp parallel
{
#pragma omp target
++a;
}
};
F();
return a;
}
//##################
With the frontend command:
clang -cc1 -internal-isystem $CLANG_PATH/bin/../lib/clang/3.8.0/include
-nostdsysteminc -fopenmp -x c++ -triple x86_64-unknown-unknown -o - bla.cpp
it gets into an infinite loop in the parser. Note that the code needs
-std=c++11, and adding this extra option makes the problem go away.
Nevertheless, the compiler should not run forever if the user forgets to add
that.</pre>
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</p>
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