1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// [func.require] 11 12// INVOKE 13#if __cplusplus < 201103L 14int main () {} // no __invoke in C++03 15#else 16 17#include <type_traits> 18 19template <typename T, int N> 20struct Array 21{ 22 typedef T type[N]; 23}; 24 25struct Type 26{ 27 Array<char, 1>::type& f1(); 28 Array<char, 2>::type& f2() const; 29 30 Array<char, 1>::type& g1() &; 31 Array<char, 2>::type& g2() const &; 32#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 33 Array<char, 3>::type& g3() &&; 34 Array<char, 4>::type& g4() const &&; 35#endif 36}; 37 38int main() 39{ 40 static_assert(sizeof(std::__invoke(&Type::f1, std::declval<Type >())) == 1, ""); 41 static_assert(sizeof(std::__invoke(&Type::f2, std::declval<Type const >())) == 2, ""); 42 43 static_assert(sizeof(std::__invoke(&Type::g1, std::declval<Type &>())) == 1, ""); 44 static_assert(sizeof(std::__invoke(&Type::g2, std::declval<Type const &>())) == 2, ""); 45#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 46 static_assert(sizeof(std::__invoke(&Type::g3, std::declval<Type &&>())) == 3, ""); 47 static_assert(sizeof(std::__invoke(&Type::g4, std::declval<Type const&&>())) == 4, ""); 48#endif 49} 50#endif 51