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 move assignment 15 16 #include <memory> 17 #include <cassert> 18 19 // Can't copy from lvalue 20 21 struct A 22 { 23 static int count; 24 A() {++count;} 25 A(const A&) {++count;} 26 ~A() {--count;} 27 }; 28 29 int A::count = 0; 30 31 class Deleter 32 { 33 int state_; 34 35 public: 36 37 Deleter() : state_(5) {} 38 39 int state() const {return state_;} 40 41 void operator()(A* p) {delete p;} 42 }; 43 44 int main() 45 { 46 { 47 std::unique_ptr<A, Deleter> s(new A); 48 A* p = s.get(); 49 std::unique_ptr<A, Deleter> s2; 50 s2 = s; 51 assert(s2.get() == p); 52 assert(s.get() == 0); 53 assert(A::count == 1); 54 } 55 assert(A::count == 0); 56 } 57
