| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| |
| // <memory> |
| |
| // allocator: |
| // T* allocate(size_t n, const void* hint); |
| |
| // In C++20, parts of std::allocator<T> have been removed. |
| // However, for backwards compatibility, if _LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS |
| // is defined before including <memory>, then removed members will be restored. |
| |
| // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS |
| // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS |
| |
| #include <memory> |
| |
| void f() { |
| std::allocator<int> a; |
| a.allocate(3, nullptr); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}} |
| } |
