1// Copyright 2020 The Pigweed Authors 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); you may not 4// use this file except in compliance with the License. You may obtain a copy of 5// the License at 6// 7// https://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12// License for the specific language governing permissions and limitations under 13// the License. 14#pragma once 15 16#include "pw_polyfill/standard_library/namespace.h" 17 18// Placement new 19inline void* operator new(decltype(sizeof(0)), void* ptr) { return ptr; } 20 21#define __cpp_lib_launder 201606L 22 23_PW_POLYFILL_BEGIN_NAMESPACE_STD 24 25template <typename T> 26[[nodiscard]] constexpr T* launder(T* pointer) noexcept { 27 return __builtin_launder(pointer); 28} 29 30_PW_POLYFILL_END_NAMESPACE_STD 31