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 // test converting move ctor. Should only require a MoveConstructible deleter, or if 17 // deleter is a reference, not even that. 18 // Explicit version 19 20 #include <memory> 21 #include <cassert> 22 23 struct A 24 { 25 static int count; 26 A() {++count;} 27 A(const A&) {++count;} 28 virtual ~A() {--count;} 29 }; 30 31 int A::count = 0; 32 33 struct B 34 : public A 35 { 36 static int count; 37 B() {++count;} 38 B(const B&) {++count;} 39 virtual ~B() {--count;} 40 }; 41 42 int B::count = 0; 43 44 template <class T> 45 class CDeleter 46 { 47 int state_; 48 49 CDeleter(CDeleter&); 50 CDeleter& operator=(CDeleter&); 51 public: 52 53 CDeleter() : state_(5) {} 54 55 int state() const {return state_;} 56 void set_state(int s) {state_ = s;} 57 58 void operator()(T* p) {delete p;} 59 }; 60 61 int main() 62 { 63 { 64 CDeleter<A> d; 65 std::unique_ptr<B[], CDeleter<A>&> s(new B, d); 66 A* p = s.get(); 67 std::unique_ptr<A[], CDeleter<A>&> s2 = std::move(s); 68 assert(s2.get() == p); 69 assert(s.get() == 0); 70 assert(A::count == 1); 71 assert(B::count == 1); 72 d.set_state(6); 73 assert(s2.get_deleter().state() == d.state()); 74 assert(s.get_deleter().state() == d.state()); 75 } 76 assert(A::count == 0); 77 assert(B::count == 0); 78 } 79
