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 {
AA25 A() {}
~AA26 virtual ~A() {}
27 };
28
29 struct B : public A
30 {
31 };
32
33 // Can't assign from lvalue
main()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