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 19 inline 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 25 template <typename T> launder(T * pointer)26[[nodiscard]] constexpr T* launder(T* pointer) noexcept { 27 return __builtin_launder(pointer); 28 } 29 30 _PW_POLYFILL_END_NAMESPACE_STD 31