1// PR c++/33342 2 3template <bool B, class T = void> 4struct enable_if_c { 5 typedef T type; 6}; 7 8template <class T> 9struct A 10{ 11 template <class U, class V> 12 struct B; 13 14 template <class U> 15 struct B<U, typename enable_if_c<U::sub::value==0>::type> 16 { }; 17}; 18 19struct C 20{ 21 struct sub 22 { 23 static const int value = 0; 24 }; 25}; 26 27 28A<int> a; 29A<int>::B<C, void> b; 30