| // PR c++/53788 | |
| // { dg-do compile { target c++11 } } | |
| struct t { static const bool value = true; }; | |
| struct f { static const bool value = false; }; | |
| template<typename T> | |
| struct has_static { | |
| template<typename X> | |
| static t check(X*, decltype(T::fun())* = 0); // { dg-error "without object" } | |
| static f check(...); | |
| typedef decltype(check((T*)(0))) ret; | |
| static const bool value = ret::value; | |
| }; | |
| struct test { int fun() { return 0; } }; | |
| bool b = has_static<test>::value; |