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 ctor 15 16 #include <memory> 17 #include <utility> 18 #include <cassert> 19 20 // test converting move ctor. Should only require a MoveConstructible deleter, or if 21 // deleter is a reference, not even that. 22 // Explicit version 23 24 struct A 25 { 26 static int count; 27 A() {++count;} 28 A(const A&) {++count;} 29 virtual ~A() {--count;} 30 }; 31 32 int A::count = 0; 33 34 struct B 35 : public A 36 { 37 static int count; 38 B() {++count;} 39 B(const B&) {++count;} 40 virtual ~B() {--count;} 41 }; 42 43 int B::count = 0; 44 45 int main() 46 { 47 { 48 std::unique_ptr<B> s(new B); 49 A* p = s.get(); 50 std::unique_ptr<A> s2(std::move(s)); 51 assert(s2.get() == p); 52 assert(s.get() == 0); 53 assert(A::count == 1); 54 assert(B::count == 1); 55 } 56 assert(A::count == 0); 57 assert(B::count == 0); 58 } 59
