1c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant//===----------------------------------------------------------------------===// 2c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// 3c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// The LLVM Compiler Infrastructure 4c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// This file is dual licensed under the MIT and the University of Illinois Open 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// Source Licenses. See LICENSE.TXT for details. 7c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// 8c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant//===----------------------------------------------------------------------===// 9c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 10c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// <functional> 11c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 12c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant// const_mem_fun_ref_t 13c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 14c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant#include <functional> 15c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant#include <type_traits> 16c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant#include <cassert> 17c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 18c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantstruct A 19c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 20c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant char a1() {return 5;} 21c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant short a2(int i) {return short(i+1);} 22c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant int a3() const {return 1;} 23c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant double a4(unsigned i) const {return i-1;} 24c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant}; 25c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant 26c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnantint main() 27c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant{ 28c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant typedef std::const_mem_fun_ref_t<int, A> F; 29c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant static_assert((std::is_base_of<std::unary_function<A, int>, F>::value), ""); 30c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant const F f(&A::a3); 31c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant const A a = A(); 32c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant assert(f(a) == 1); 33c52f43e72dfcea03037729649da84c23b3beb04aHoward Hinnant} 34