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 24struct A 25{ 26 static int count; 27 A() {++count;} 28 A(const A&) {++count;} 29 virtual ~A() {--count;} 30}; 31 32int A::count = 0; 33 34struct B 35 : public A 36{ 37 static int count; 38 B() {++count;} 39 B(const B&) {++count;} 40 virtual ~B() {--count;} 41}; 42 43int B::count = 0; 44 45template <class T> 46class CDeleter 47{ 48 int state_; 49 50 CDeleter(CDeleter&); 51 CDeleter& operator=(CDeleter&); 52public: 53 54 CDeleter() : state_(5) {} 55 56 int state() const {return state_;} 57 void set_state(int s) {state_ = s;} 58 59 void operator()(T* p) {delete p;} 60}; 61 62int main() 63{ 64 { 65 CDeleter<A> d; 66 const std::unique_ptr<B, CDeleter<A>&> s(new B, d); 67 A* p = s.get(); 68 std::unique_ptr<A, CDeleter<A>&> s2 = s; 69 assert(s2.get() == p); 70 assert(s.get() == 0); 71 assert(A::count == 1); 72 assert(B::count == 1); 73 d.set_state(6); 74 assert(s2.get_deleter().state() == d.state()); 75 assert(s.get_deleter().state() == d.state()); 76 } 77 assert(A::count == 0); 78 assert(B::count == 0); 79} 80