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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Built-in __is_constructible interferes with definition of struct __is_constructible {};"
href="http://llvm.org/bugs/show_bug.cgi?id=21045">21045</a>
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<th>Summary</th>
<td>Built-in __is_constructible interferes with definition of struct __is_constructible {};
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</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
</td>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>stephan.bergmann.secondary@googlemail.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><span class="quote">> $ clang++ --version
> clang version 3.6.0 (trunk 218328)
> Target: x86_64-apple-darwin13.4.0
> Thread model: posix</span >
>
<span class="quote">> $ cat test.cc
> struct __is_constructible {};</span >
>
<span class="quote">> $ clang++ -c test.cc
> test.cc:1:1: error: declaration of anonymous struct must be a definition
> struct __is_constructible {};
> ^
> test.cc:1:1: warning: declaration does not declare anything [-Wmissing-declarations]
> struct __is_constructible {};
> ^
> 1 warning and 1 error generated.</span >
(This breaks inclusion of
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/type_traits
on Mac OS X in C++11 mode, which happens to define a struct template named
__is_constructible.)</pre>
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