[llvm-bugs] [Bug 31514] New: Segfault when evaluating alias template in class template specialization.

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31514

            Bug ID: 31514
           Summary: Segfault when evaluating alias template in class
                    template specialization.
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: eric at efcs.ca
                CC: dgregor at apple.com, llvm-bugs at lists.llvm.org
    Classification: Unclassified

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;
}

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