1 // Copyright (C) 2015-2018 Free Software Foundation, Inc. 2 // 3 // This file is part of the GNU ISO C++ Library. This library is free 4 // software; you can redistribute it and/or modify it under the 5 // terms of the GNU General Public License as published by the 6 // Free Software Foundation; either version 3, or (at your option) 7 // any later version. 8 9 // This library is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 14 // You should have received a copy of the GNU General Public License along 15 // with this library; see the file COPYING3. If not see 16 // <http://www.gnu.org/licenses/>. 17 18 // { dg-do run { target c++14 } } 19 20 #include <experimental/any> 21 #include <cstdint> 22 #include <testsuite_hooks.h> 23 24 // Alignment requiremnts of this type prevent it being stored in 'any' 25 struct alignas(2 * alignof(void*)) X { }; 26 27 bool stored_internally(void * obj,const std::experimental::any & a)28stored_internally(void* obj, const std::experimental::any& a) 29 { 30 std::uintptr_t a_addr = reinterpret_cast<std::uintptr_t>(&a); 31 std::uintptr_t a_end = a_addr + sizeof(a); 32 std::uintptr_t obj_addr = reinterpret_cast<std::uintptr_t>(obj); 33 return (a_addr <= obj_addr) && (obj_addr < a_end); 34 } 35 36 void test01()37test01() 38 { 39 std::experimental::any a = X{}; 40 X& x = std::experimental::any_cast<X&>(a); 41 VERIFY( !stored_internally(&x, a) ); 42 43 a = 'X'; 44 char& c = std::experimental::any_cast<char&>(a); 45 VERIFY( stored_internally(&c, a) ); 46 } 47 48 int main()49main() 50 { 51 test01(); 52 } 53