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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Warn on unsigned underflow in loop condition"
href="https://bugs.llvm.org/show_bug.cgi?id=38563">38563</a>
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<th>Summary</th>
<td>Warn on unsigned underflow in loop condition
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</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>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Static Analyzer
</td>
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<th>Assignee</th>
<td>dcoughlin@apple.com
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<th>Reporter</th>
<td>david.bolvansky@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
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<pre>It would be useful if Clang could warn in the following case:
unsigned getSize();
int f() {
unsigned h = 0;
for (unsigned i = 0; i < getSize() - 1; i++)
// underflow if getSize returns 0
{
h += i;
}
return h;
}</pre>
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