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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Incorrect -Wcast-align warning about function pointers after r288267"
href="https://llvm.org/bugs/show_bug.cgi?id=31558">31558</a>
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<th>Summary</th>
<td>Incorrect -Wcast-align warning about function pointers after r288267
</td>
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<th>Product</th>
<td>new-bugs
</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>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>dimitry@andric.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>After r288267, -Wcast-align can now incorrectly warn about function pointers
that are about functions with different arguments.
Test case:
struct s;
void f(struct s *);
typedef void (*p)(void *);
p x = (p)&f; // warning: cast from 'void (*)(struct s *)' to 'p' (aka 'void
(*)(void *)') increases required alignment from 1 to 4 [-Wcast-align]
p y = (p)f; // no warning
So for some reason, using the address-of operator on a function name now makes
it incompatible. This used to give no warning before r288267.</pre>
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