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 // <functional> 11 12 // template <class F, class ...Args> 13 // result_of_t<F&&(Args&&...)> invoke(F&&, Args&&...); 14 15 #include <functional> 16 #include <cassert> 17 18 #include "test_macros.h" 19 20 #if TEST_STD_VER <= 14 21 # ifdef __cpp_lib_invoke 22 # error Feature test macro should be defined 23 # endif 24 #else 25 # ifndef __cpp_lib_invoke 26 # error Feature test macro not defined 27 # endif 28 # if __cpp_lib_invoke != 201411 29 # error __cpp_lib_invoke has the wrong value 30 # endif 31 #endif 32 foo(int)33int foo(int) { return 42; } 34 main()35int main() { 36 #if defined(__cpp_lib_invoke) 37 assert(std::invoke(foo, 101) == 42); 38 #endif 39 }