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 // <memory> 11 12 // template <class Alloc> 13 // struct allocator_traits 14 // { 15 // typedef Alloc::propagate_on_container_copy_assignment 16 // | false_type propagate_on_container_copy_assignment; 17 // ... 18 // }; 19 20 #include <memory> 21 #include <type_traits> 22 23 #include "test_macros.h" 24 25 template <class T> 26 struct A 27 { 28 typedef T value_type; 29 typedef std::true_type propagate_on_container_copy_assignment; 30 }; 31 32 template <class T> 33 struct B 34 { 35 typedef T value_type; 36 }; 37 38 39 template <class T> 40 struct C 41 { 42 typedef T value_type; 43 private: 44 typedef std::true_type propagate_on_container_copy_assignment; 45 }; 46 47 int main() 48 { 49 static_assert((std::is_same<std::allocator_traits<A<char> >::propagate_on_container_copy_assignment, std::true_type>::value), ""); 50 static_assert((std::is_same<std::allocator_traits<B<char> >::propagate_on_container_copy_assignment, std::false_type>::value), ""); 51 #if TEST_STD_VER >= 11 52 static_assert((std::is_same<std::allocator_traits<C<char> >::propagate_on_container_copy_assignment, std::false_type>::value), ""); 53 #endif 54 } 55
