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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Ubsan: std::map<T, std::function<F>> fails with -fsanitize=alignment"
href="https://llvm.org/bugs/show_bug.cgi?id=25122">25122</a>
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<th>Summary</th>
<td>Ubsan: std::map<T, std::function<F>> fails with -fsanitize=alignment
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>3.7
</td>
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<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<th>OS</th>
<td>MacOS X
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>gburton.feral@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=15042" name="attach_15042" title="Sample project which demonstrates behaviour">attachment 15042</a> <a href="attachment.cgi?id=15042&action=edit" title="Sample project which demonstrates behaviour">[details]</a></span>
Sample project which demonstrates behaviour
Compiling a program which contains a declaration of std::map<T,
std::function<F>> (where T and F are types) with `-fsanitize=alignment
-fsanitize-undefined-trap-on-error` produces an executable which fails to run
(crashes with EXC_BAD_INSTRUCTION).
Tested with Apple Clang, and the official Clang3.7 binary release.
Runs without errors on GCC-5.2.0</pre>
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