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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - std::swap does not work with vector types"
href="https://llvm.org/bugs/show_bug.cgi?id=26656">26656</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>std::swap does not work with vector types
</td>
</tr>
<tr>
<th>Product</th>
<td>libc++
</td>
</tr>
<tr>
<th>Version</th>
<td>3.8
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>eugeni.stepanov@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>#include <utility>
typedef float T __attribute__((__vector_size__(16)));
void f(T &a, T &b) {
std::swap(a, b);
}
1.cc:7:3: error: no matching function for call to 'swap'
std::swap(a, b);
^~~~~~~~~
/code/build-llvm/bin/../include/c++/v1/type_traits:4240:5: note: candidate
template ignored: disabled by 'enable_if' [with _Tp =
__attribute__((__vector_size__(4 * sizeof(float)))) float]
is_move_constructible<_Tp>::value &&
^
/code/build-llvm/bin/../include/c++/v1/utility:245:1: note: candidate template
ignored: could not match '_Tp [_Np]' against 'T'
(vector of 4 'float' values)
swap(_Tp (&__a)[_Np], _Tp (&__b)[_Np])
_NOEXCEPT_(__is_nothrow_swappable<_Tp>::value)
^
/code/build-llvm/bin/../include/c++/v1/utility:495:1: note: candidate template
ignored: could not match
'pair<type-parameter-0-0, type-parameter-0-1>' against
'__attribute__((__vector_size__(4 * sizeof(float)))) float'
(vector of 4 'float' values)
swap(pair<_T1, _T2>& __x, pair<_T1, _T2>& __y)
^
1 error generated.</pre>
</div>
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