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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - please report invalid use of placement new"
href="https://bugs.llvm.org/show_bug.cgi?id=45843">45843</a>
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<th>Summary</th>
<td>please report invalid use of placement new
</td>
</tr>
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<th>Product</th>
<td>compiler-rt
</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>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>msan
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>rafael@espindo.la
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=23465" name="attach_23465" title="testcase">attachment 23465</a> <a href="attachment.cgi?id=23465&action=edit" title="testcase">[details]</a></span>
testcase
As far as I can tell, basic.life makes this code illegal
new (&x) X(std::move(x));
No one would write that directly, but I have hit that with std::swap(x,x) and a
move assignment operator that was using the move constructor.
The attached file is a case where it would be nice to get a warning. It is the
same testcase given to <a href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94992">https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94992</a></pre>
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