pw_minimal_cpp_stdlib/public/internal/new.h

// Copyright 2020 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#pragma once

#include "pw_polyfill/standard_library/namespace.h"

// Placement new
inline void* operator new(decltype(sizeof(0)), void* ptr) { return ptr; }

#define __cpp_lib_launder 201606L

_PW_POLYFILL_BEGIN_NAMESPACE_STD

template <typename T>
[[nodiscard]] constexpr T* launder(T* pointer) noexcept {
  return __builtin_launder(pointer);
}

_PW_POLYFILL_END_NAMESPACE_STD