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 reset 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<A> p(new A); 44 assert(A::count == 1); 45 assert(B::count == 0); 46 A* i = p.get(); 47 assert(i != nullptr); 48 p.reset(new B); 49 assert(A::count == 1); 50 assert(B::count == 1); 51 } 52 assert(A::count == 0); 53 assert(B::count == 0); 54 { 55 std::unique_ptr<A> p(new B); 56 assert(A::count == 1); 57 assert(B::count == 1); 58 A* i = p.get(); 59 assert(i != nullptr); 60 p.reset(new B); 61 assert(A::count == 1); 62 assert(B::count == 1); 63 } 64 assert(A::count == 0); 65 assert(B::count == 0); 66 } 67
