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<base href="http://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - std::swap() doesn't work with multi-dimensional ranges"
href="http://llvm.org/bugs/show_bug.cgi?id=22106">22106</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>std::swap() doesn't work with multi-dimensional ranges
</td>
</tr>
<tr>
<th>Product</th>
<td>libc++
</td>
</tr>
<tr>
<th>Version</th>
<td>3.4
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</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>pgriess@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, mclow.lists@gmail.com
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>$ cat foo.cpp
#include <utility>
int main(int argc, char** argv) {
int src[8][8];
decltype(src) dest;
std::swap(src, dest);
return 0;
}
$ clang++ -stdlib=libc++ -std=c++11 foo.cpp
In file included from foo.cpp:1:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/utility:211:9:
error: call to function 'swap' that is neither visible in
the template definition nor found by argument-dependent lookup
swap(*__first1, *__first2);
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/utility:220:12:
note: in instantiation of function template
specialization 'std::__1::swap_ranges<int (*)[8], int (*)[8]>' requested
here
_VSTD::swap_ranges(__a, __a + _Np, __b);
^
foo.cpp:7:10: note: in instantiation of function template specialization
'std::__1::swap<int [8], 8>' requested here
std::swap(src, dest);
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/utility:218:1:
note: 'swap' should be declared prior to the call site
swap(_Tp (&__a)[_Np], _Tp (&__b)[_Np])
_NOEXCEPT_(__is_nothrow_swappable<_Tp>::value)
^
1 error generated.
$ clang++ --version
Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM 3.5svn)
Target: x86_64-apple-darwin14.0.0
Thread model: posix
Changing src to a 'int[8]' from 'int[8][8]' does not trigger the issue.</pre>
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