text: // 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
  
  // Placement new
  inline void* operator new(decltype(sizeof(0)), void* ptr) { return ptr; }
  
  #define __cpp_lib_launder 201606L
  
  namespace std {
  
  template <typename T>
  [[nodiscard]] constexpr T* launder(T* pointer) noexcept {
    return __builtin_launder(pointer);
  }
  
  }  // namespace std
  