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 #include <cassert> 18 19 struct A 20 { 21 static int count; 22 A() {++count;} 23 A(const A&) {++count;} 24 virtual ~A() {--count;} 25 }; 26 27 int A::count = 0; 28 29 struct B 30 : public A 31 { 32 static int count; 33 B() {++count;} 34 B(const B&) {++count;} 35 virtual ~B() {--count;} 36 }; 37 38 int B::count = 0; 39 40 int main() 41 { 42 { 43 std::unique_ptr<B> s(new B); 44 A* p = s.get(); 45 std::unique_ptr<A> s2(new A); 46 assert(A::count == 2); 47 s2 = std::move(s); 48 assert(s2.get() == p); 49 assert(s.get() == 0); 50 assert(A::count == 1); 51 assert(B::count == 1); 52 } 53 assert(A::count == 0); 54 assert(B::count == 0); 55 } 56
