1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <memory> 10 11 // shared_ptr 12 13 // template <class T, class D> 14 // bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept; 15 // template <class T, class D> 16 // bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept; 17 // template <class T, class D> 18 // bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept; 19 // template <class T, class D> 20 // bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept; 21 // template <class T, class D> 22 // bool operator<(const unique_ptr<T, D>& x, nullptr_t) noexcept; 23 // template <class T, class D> 24 // bool operator<(nullptr_t, const unique_ptr<T, D>& y) noexcept; 25 // template <class T, class D> 26 // bool operator<=(const unique_ptr<T, D>& x, nullptr_t) noexcept; 27 // template <class T, class D> 28 // bool operator<=(nullptr_t, const unique_ptr<T, D>& y) noexcept; 29 // template <class T, class D> 30 // bool operator>(const unique_ptr<T, D>& x, nullptr_t) noexcept; 31 // template <class T, class D> 32 // bool operator>(nullptr_t, const unique_ptr<T, D>& y) noexcept; 33 // template <class T, class D> 34 // bool operator>=(const unique_ptr<T, D>& x, nullptr_t) noexcept; 35 // template <class T, class D> 36 // bool operator>=(nullptr_t, const unique_ptr<T, D>& y) noexcept; 37 38 #include <memory> 39 #include <cassert> 40 41 void do_nothing(int*) {} 42 43 int main() 44 { 45 const std::unique_ptr<int> p1(new int(1)); 46 assert(!(p1 == nullptr)); 47 assert(!(nullptr == p1)); 48 assert(!(p1 < nullptr)); 49 assert( (nullptr < p1)); 50 assert(!(p1 <= nullptr)); 51 assert( (nullptr <= p1)); 52 assert( (p1 > nullptr)); 53 assert(!(nullptr > p1)); 54 assert( (p1 >= nullptr)); 55 assert(!(nullptr >= p1)); 56 57 const std::unique_ptr<int> p2; 58 assert( (p2 == nullptr)); 59 assert( (nullptr == p2)); 60 assert(!(p2 < nullptr)); 61 assert(!(nullptr < p2)); 62 assert( (p2 <= nullptr)); 63 assert( (nullptr <= p2)); 64 assert(!(p2 > nullptr)); 65 assert(!(nullptr > p2)); 66 assert( (p2 >= nullptr)); 67 assert( (nullptr >= p2)); 68 } 69