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 Ptr> 13 // struct pointer_traits 14 // { 15 // typedef <details> element_type; 16 // ... 17 // }; 18 19 #include <memory> 20 #include <type_traits> 21 22 #include "test_macros.h" 23 24 struct A 25 { 26 typedef char element_type; 27 }; 28 29 template <class T> 30 struct B 31 { 32 typedef char element_type; 33 }; 34 35 template <class T> 36 struct C 37 { 38 }; 39 40 template <class T, class U> 41 struct D 42 { 43 }; 44 45 template <class T, class U> 46 struct E 47 { 48 static int element_type; 49 }; 50 51 template <class T> 52 struct F { 53 private: 54 typedef int element_type; 55 }; 56 57 int main() 58 { 59 static_assert((std::is_same<std::pointer_traits<A>::element_type, char>::value), ""); 60 static_assert((std::is_same<std::pointer_traits<B<int> >::element_type, char>::value), ""); 61 static_assert((std::is_same<std::pointer_traits<C<int> >::element_type, int>::value), ""); 62 static_assert((std::is_same<std::pointer_traits<D<double, int> >::element_type, double>::value), ""); 63 static_assert((std::is_same<std::pointer_traits<E<double, int> >::element_type, double>::value), ""); 64 #if TEST_STD_VER >= 11 65 static_assert((std::is_same<std::pointer_traits<F<double>>::element_type, double>::value), ""); 66 #endif 67 68 } 69
