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 // type_traits 11 12 // is_trivially_assignable 13 14 // XFAIL: gcc-4.9 15 16 #include <type_traits> 17 #include "test_macros.h" 18 19 template <class T, class U> 20 void test_is_trivially_assignable() 21 { 22 static_assert(( std::is_trivially_assignable<T, U>::value), ""); 23 #if TEST_STD_VER > 14 24 static_assert(( std::is_trivially_assignable_v<T, U>), ""); 25 #endif 26 } 27 28 template <class T, class U> 29 void test_is_not_trivially_assignable() 30 { 31 static_assert((!std::is_trivially_assignable<T, U>::value), ""); 32 #if TEST_STD_VER > 14 33 static_assert((!std::is_trivially_assignable_v<T, U>), ""); 34 #endif 35 } 36 37 struct A 38 { 39 }; 40 41 struct B 42 { 43 void operator=(A); 44 }; 45 46 struct C 47 { 48 void operator=(C&); // not const 49 }; 50 51 int main() 52 { 53 test_is_trivially_assignable<int&, int&> (); 54 test_is_trivially_assignable<int&, int> (); 55 test_is_trivially_assignable<int&, double> (); 56 57 test_is_not_trivially_assignable<int, int&> (); 58 test_is_not_trivially_assignable<int, int> (); 59 test_is_not_trivially_assignable<B, A> (); 60 test_is_not_trivially_assignable<A, B> (); 61 test_is_not_trivially_assignable<C&, C&> (); 62 } 63
