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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 - clang: C++: -Wcast-align is ignored for reinterpret_cast<>() casts"
href="https://bugs.llvm.org/show_bug.cgi?id=33397">33397</a>
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<th>Summary</th>
<td>clang: C++: -Wcast-align is ignored for reinterpret_cast<>() casts
</td>
</tr>
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<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>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<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>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>lebedev.ri@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>int main() {
char foo[] = "foobar";
int bar = *(int*)(foo + 1);
int baz = *(reinterpret_cast<int*>(foo + 1));
}
$ clang -x c++ -Wcast-align /tmp/tst.c
/tmp/tst.c:3:14: warning: cast from 'char *' to 'int *' increases required
alignment from 1 to 4 [-Wcast-align]
int bar = *(int*)(foo + 1);
^~~~~~~~~~~~~~~
1 warning generated.</pre>
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