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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - LWG 2148: hash support for enum types seems under-specified"
href="https://llvm.org/bugs/show_bug.cgi?id=28917">28917</a>
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<th>Summary</th>
<td>LWG 2148: hash support for enum types seems under-specified
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<th>Product</th>
<td>libc++
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>All Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>mehdi.amini@apple.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>libc++ implementation of std::hash does not allows to use SFINAE because of a
static_assert.
GCC had the same issue and removed the static assert 4 years ago:
<a href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52931">https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52931</a>
LGW 2148 reference is: <a href="http://cplusplus.github.io/LWG/lwg-active.html#2543">http://cplusplus.github.io/LWG/lwg-active.html#2543</a></pre>
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