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 // libc++ cannot safely provide the auto_ptr constructor without rvalue 11 // references. 12 // XFAIL: c++98, c++03 13 14 // <memory> 15 16 // unique_ptr 17 18 // template <class U> unique_ptr(auto_ptr<U>&&) noexcept 19 20 #include <memory> 21 #include <utility> 22 #include <cassert> 23 24 #include "test_macros.h" 25 26 struct A 27 { 28 static int count; AA29 A() {++count;} AA30 A(const A&) {++count;} ~AA31 virtual ~A() {--count;} 32 }; 33 34 int A::count = 0; 35 36 struct B 37 : public A 38 { 39 static int count; BB40 B() {++count;} BB41 B(const B&) {++count;} ~BB42 virtual ~B() {--count;} 43 }; 44 45 int B::count = 0; 46 main()47int main() 48 { 49 { 50 B* p = new B; 51 std::auto_ptr<B> ap(p); 52 std::unique_ptr<A> up(std::move(ap)); 53 assert(up.get() == p); 54 assert(ap.get() == 0); 55 assert(A::count == 1); 56 assert(B::count == 1); 57 } 58 assert(A::count == 0); 59 assert(B::count == 0); 60 { 61 B* p = new B; 62 std::auto_ptr<B> ap(p); 63 std::unique_ptr<A> up; 64 up = std::move(ap); 65 assert(up.get() == p); 66 assert(ap.get() == 0); 67 assert(A::count == 1); 68 assert(B::count == 1); 69 } 70 assert(A::count == 0); 71 assert(B::count == 0); 72 #if TEST_STD_VER >= 11 73 { 74 static_assert(std::is_nothrow_constructible< 75 std::unique_ptr<A>, 76 std::auto_ptr<B>&& 77 >::value, ""); 78 } 79 #endif 80 } 81