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 // Can't assign from lvalue 17 18 #include <memory> 19 20 #include "test_macros.h" 21 #include "../../deleter.h" 22 23 struct A 24 { 25 A() {} 26 virtual ~A() {} 27 }; 28 29 struct B : public A 30 { 31 }; 32 33 // Can't assign from lvalue 34 int main() 35 { 36 Deleter<B> db; 37 std::unique_ptr<B, Deleter<B>& > s(new B, db); 38 Deleter<A> da; 39 std::unique_ptr<A, Deleter<A> &> s2(new A, da); 40 #if TEST_STD_VER >= 11 41 s2 = s; // expected-error {{no viable overloaded '='}} 42 #else 43 // NOTE: The move-semantic emulation creates an ambiguous overload set 44 // so that assignment from an lvalue does not compile 45 s2 = s; // expected-error {{use of overloaded operator '=' is ambiguous}} 46 #endif 47 } 48
