null.pass.cpp (961B)
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 // The deleter is not called if get() == 0 15 16 #include <memory> 17 #include <cassert> 18 19 class Deleter { 20 int state_; 21 22 Deleter(Deleter&); 23 Deleter& operator=(Deleter&); 24 25 public: 26 Deleter() : state_(0) {} 27 28 int state() const { return state_; } 29 30 void operator()(void*) { ++state_; } 31 }; 32 33 template <class T> 34 void test_basic() { 35 Deleter d; 36 assert(d.state() == 0); 37 { 38 std::unique_ptr<T, Deleter&> p(nullptr, d); 39 assert(p.get() == nullptr); 40 assert(&p.get_deleter() == &d); 41 } 42 assert(d.state() == 0); 43 } 44 45 int main() { 46 test_basic<int>(); 47 test_basic<int[]>(); 48 }