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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Segfault when evaluating alias template in class template specialization."
href="https://llvm.org/bugs/show_bug.cgi?id=31514">31514</a>
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<th>Summary</th>
<td>Segfault when evaluating alias template in class template specialization.
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>eric@efcs.ca
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Reproducer:
// clang++ -std=c++11 test.cpp
template <class T, class>
using EnableTupleSize = T;
template <class T> struct tuple_size;
template <class T>
struct tuple_size<EnableTupleSize<const T, decltype(tuple_size<T>::value)>> {};
template <class T>
struct tuple_size<EnableTupleSize<volatile T, decltype(tuple_size<T>::value)>>
{};
struct Tuple;
template <> struct tuple_size<Tuple> { enum { value = 1 };};
int main()
{
tuple_size<const Tuple> t;
}</pre>
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