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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - differences with Microsoft __has_nothrow_assign and __has_trivial_assign when the assign operator is deleted"
href="https://bugs.llvm.org/show_bug.cgi?id=33716">33716</a>
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<th>Summary</th>
<td>differences with Microsoft __has_nothrow_assign and __has_trivial_assign when the assign operator is deleted
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mib.bugzilla@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>The Microsoft compiler will compile these without error, but clang gives static
assertions.
Microsoft (R) C/C++ Optimizing Compiler Version 19.00.24215.1 for x64
test.cpp
test.cpp:5:1: error: static_assert failed "__has_nothrow_assign is incorrect"
static_assert(!__has_nothrow_assign(non_assignable),
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
test.cpp:7:1: error: static_assert failed "Fail"
static_assert(!__has_trivial_assign(non_assignable), "Fail");
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2 errors generated.
compilation aborted for test.cpp (code 1)
ksh-3.2$ cat test.cpp
struct non_assignable {
non_assignable();
non_assignable& operator=(const non_assignable&) = delete;
};
static_assert(!__has_nothrow_assign(non_assignable),
"__has_nothrow_assign is incorrect");
static_assert(!__has_trivial_assign(non_assignable), "Fail");</pre>
</div>
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