| // PR c++/48744 | |
| // { dg-do compile { target c++11 } } | |
| template<class T> | |
| struct add_rval_ref { | |
| typedef T&& type; | |
| }; | |
| template<> | |
| struct add_rval_ref<void> { | |
| typedef void type; | |
| }; | |
| template<class T> | |
| typename add_rval_ref<T>::type create(); | |
| template<class T, class Arg> | |
| decltype(T{create<Arg>()}, char()) f(int); | |
| template<class, class> | |
| char (&f(...))[2]; | |
| static_assert(sizeof(f<int, void>(0)) != 1, "Error"); |