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 default unique_ptr ctor 15 16 #include <memory> 17 #include <cassert> 18 19 // default unique_ptr ctor shouldn't require complete type 20 21 struct A; 22 23 class Deleter 24 { 25 int state_; 26 27 Deleter(Deleter&); 28 Deleter& operator=(Deleter&); 29 30 public: 31 Deleter() : state_(5) {} 32 33 int state() const {return state_;} 34 35 void operator()(A* p); 36 }; 37 38 void check(int i); 39 40 template <class D = std::default_delete<A> > 41 struct B 42 { 43 std::unique_ptr<A, D> a_; 44 B() {} 45 ~B(); 46 47 A* get() const {return a_.get();} 48 D& get_deleter() {return a_.get_deleter();} 49 }; 50 51 int main() 52 { 53 { 54 B<> s; 55 assert(s.get() == 0); 56 } 57 check(0); 58 { 59 B<Deleter> s; 60 assert(s.get() == 0); 61 assert(s.get_deleter().state() == 5); 62 } 63 check(0); 64 } 65 66 struct A 67 { 68 static int count; 69 A() {++count;} 70 A(const A&) {++count;} 71 ~A() {--count;} 72 }; 73 74 int A::count = 0; 75 76 void Deleter::operator()(A* p) {delete p;} 77 78 void check(int i) 79 { 80 assert(A::count == i); 81 } 82 83 template <class D> 84 B<D>::~B() {} 85
