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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - std::ceil2 error with libstdc++ and -std=gnu++2a"
href="https://bugs.llvm.org/show_bug.cgi?id=43307">43307</a>
</td>
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<th>Summary</th>
<td>std::ceil2 error with libstdc++ and -std=gnu++2a
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>C++2a
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>yichen.yan@inf.ethz.ch
</td>
</tr>
<tr>
<th>CC</th>
<td>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=22493" name="attach_22493" title="test.cc">attachment 22493</a> <a href="attachment.cgi?id=22493&action=edit" title="test.cc">[details]</a></span>
test.cc
gcc successed with:
$ g++ -std=gnu++2a --compile -o /dev/null test.cc
clang output:
$ clang++ -std=gnu++2a --compile -o /dev/null test.cc
test.cc:14:5: error: static_assert failed due to requirement
'!ceil2_valid<4294967295, void>()'
static_assert(!ceil2_valid<T(max<T>)>());
^ ~~~~~~~~~~~~~~~~~~~~~~~~~
test.cc:18:15: note: in instantiation of function template specialization
'test<unsigned int>' requested here
static_assert(test<unsigned>(0));
^
1 error generated.</pre>
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