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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Non-canonical loop nest not diagnosed"
href="https://bugs.llvm.org/show_bug.cgi?id=45233">45233</a>
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<th>Summary</th>
<td>Non-canonical loop nest not diagnosed
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>OpenMP
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>llvm@meinersbur.de
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Consider the following program:
int main() {
#pragma omp for collapse(2)
for (int i = 0; i < 128; i += 1)
for (int j = 0; j < 128; j += i)
;
return 0;
}
According to the OpenMP specification, the incr must be:
<span class="quote">> An integer expression that is loop invariant with respect to the outermost</span >
associated loop
However, clang consumes this loop without error diagnostic.</pre>
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