unique_ptr.pass.cpp (2338B)
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 // UNSUPPORTED: sanitizer-new-delete 11 12 // <memory> 13 14 // template <class Y, class D> explicit shared_ptr(unique_ptr<Y, D>&&r); 15 16 #include <memory> 17 #include <new> 18 #include <cstdlib> 19 #include <cassert> 20 21 #include "test_macros.h" 22 #include "count_new.hpp" 23 24 struct B 25 { 26 static int count; 27 28 B() {++count;} 29 B(const B&) {++count;} 30 virtual ~B() {--count;} 31 }; 32 33 int B::count = 0; 34 35 struct A 36 : public B 37 { 38 static int count; 39 40 A() {++count;} 41 A(const A&) {++count;} 42 ~A() {--count;} 43 }; 44 45 int A::count = 0; 46 47 void fn ( const std::shared_ptr<int> &) {} 48 void fn ( const std::shared_ptr<B> &) { assert (false); } 49 50 template <typename T> 51 void assert_deleter ( T * ) { assert(false); } 52 53 int main() 54 { 55 { 56 std::unique_ptr<A> ptr(new A); 57 A* raw_ptr = ptr.get(); 58 std::shared_ptr<B> p(std::move(ptr)); 59 assert(A::count == 1); 60 assert(B::count == 1); 61 assert(p.use_count() == 1); 62 assert(p.get() == raw_ptr); 63 assert(ptr.get() == 0); 64 } 65 #ifndef TEST_HAS_NO_EXCEPTIONS 66 assert(A::count == 0); 67 { 68 std::unique_ptr<A> ptr(new A); 69 A* raw_ptr = ptr.get(); 70 globalMemCounter.throw_after = 0; 71 try 72 { 73 std::shared_ptr<B> p(std::move(ptr)); 74 assert(false); 75 } 76 catch (...) 77 { 78 #if TEST_STD_VER >= 11 79 assert(A::count == 1); 80 assert(B::count == 1); 81 assert(ptr.get() == raw_ptr); 82 #else 83 (void) raw_ptr; // silence 'unused variable' warning 84 assert(A::count == 0); 85 assert(B::count == 0); 86 assert(ptr.get() == 0); 87 #endif 88 } 89 } 90 #endif 91 assert(A::count == 0); 92 { // LWG 2399 93 fn(std::unique_ptr<int>(new int)); 94 } 95 #if TEST_STD_VER >= 14 96 { // LWG 2415 97 std::unique_ptr<int, void (*)(int*)> p(nullptr, assert_deleter<int>); 98 std::shared_ptr<int> p2(std::move(p)); // should not call deleter when going out of scope 99 } 100 #endif 101 }