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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Deleted copy/assign considered "trivial" by __has_trivial_{copy,assign}"
href="http://llvm.org/bugs/show_bug.cgi?id=18185">18185</a>
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<th>Summary</th>
<td>Deleted copy/assign considered "trivial" by __has_trivial_{copy,assign}
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.3
</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>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++11
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>temporal@gmail.com
</td>
</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Both static_asserts below fail on Clang but pass on GCC.
In my case, I incorrectly tried to copy a class with deleted copy and
assignment, but the code which actually performed the copy was a template that
used the type traits to decide when it could use memcpy instead as an
optimization. So, instead of the expected compiler error I got silent memory
corruption.
struct S {
S(const S&) = delete;
S& operator=(const S&) = delete;
};
static_assert(!__has_trivial_copy(S),
"Deleted copy constructor considered trivial.");
static_assert(!__has_trivial_assign(S),
"Deleted operator= considered trivial.");</pre>
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