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 // unique_ptr 13 14 // Test unique_ptr converting move assignment 15 16 #include <memory> 17 18 #include "test_macros.h" 19 20 struct A 21 { 22 A() {} 23 virtual ~A() {} 24 }; 25 26 struct B : public A 27 { 28 }; 29 30 // Can't assign from lvalue 31 int main() 32 { 33 std::unique_ptr<B> s; 34 std::unique_ptr<A> s2; 35 #if TEST_STD_VER >= 11 36 s2 = s; // expected-error {{no viable overloaded '='}} 37 #else 38 // NOTE: The move-semantic emulation creates an ambiguous overload set 39 // so that assignment from an lvalue does not compile 40 s2 = s; // expected-error {{use of overloaded operator '=' is ambiguous}} 41 #endif 42 } 43
