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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - ASan: Method to bypass memcpy-param-overlap and other string function checks"
href="http://llvm.org/bugs/show_bug.cgi?id=16362">16362</a>
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<th>Summary</th>
<td>ASan: Method to bypass memcpy-param-overlap and other string function checks
</td>
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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>Macintosh
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<th>OS</th>
<td>MacOS X
</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
</td>
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<th>Component</th>
<td>compiler-rt
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>dfarler@apple.com
</td>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>memmove == memcpy on Darwin, so calls to memmove with overlapping ranges are
flagged as errors, even though it is not technically “undefined” behavior, it’s
just unadvertised.
It would be nice to have a way to bypass specific string functions at runtime
rather than turn off a whole class of checks, especially on Darwin, where
memcpy is implemented as memmove.</pre>
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