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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - MPI-Checker wrongly reports missing wait"
href="https://bugs.llvm.org/show_bug.cgi?id=47985">47985</a>
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<th>Summary</th>
<td>MPI-Checker wrongly reports missing wait
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</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>Static Analyzer
</td>
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<th>Assignee</th>
<td>dcoughlin@apple.com
</td>
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<th>Reporter</th>
<td>rr.underwood94@gmail.com
</td>
</tr>
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<th>CC</th>
<td>dcoughlin@apple.com, llvm-bugs@lists.llvm.org
</td>
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<pre>Created <span class=""><a href="attachment.cgi?id=24104" name="attach_24104" title="reproducer">attachment 24104</a> <a href="attachment.cgi?id=24104&action=edit" title="reproducer">[details]</a></span>
reproducer
MPI-Checker incorrectly warns for "no matching wait" when a non-blocking
collective request is completed using MPI_Test rather than MPI_Wait. Attaching
a minimal reproducer.
The relevant section of the MPI Standard is as follows:
(3.7.3) "The functions MPI_WAIT and MPI_TEST are used to complete a nonblocking
communication...A call to MPI_TEST returns flag = true if the operation
identified by request is complete. In such a case, the status object is set to
contain information on the completed operation... [if the request is not an
active persistant request, it] ... is deallocated and the request handle is set
to MPI_REQUEST_NULL"</pre>
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