2 // { dg-options "-std=gnu++0x" }
4 template<typename T, typename U>
7 static const bool value = false;
13 static const bool value = true;
16 #define CHECK_DECLTYPE(DECLTYPE,RESULT) \
17 static_assert(is_same< DECLTYPE , RESULT >::value, #RESULT)
19 template<typename F> F create_a();
21 template<typename F, typename T1>
22 decltype(create_a<F&>()(create_a<const T1&>())) forward(F f, const T1& a1)
29 const T& operator()(const T& x) { return x; }
37 CHECK_DECLTYPE(decltype(forward(id, i)), const int&);
38 CHECK_DECLTYPE(decltype(forward(id, f)), const float&);