libcxx/include/__new/placement_new_delete.h

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef _LIBCPP___NEW_PLACEMENT_NEW_DELETE_H
  10 #define _LIBCPP___NEW_PLACEMENT_NEW_DELETE_H
  11
  12 #include <__config>
  13 #include <__cstddef/size_t.h>
  14
  15 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  16 #  pragma GCC system_header
  17 #endif
  18
  19 #if defined(_LIBCPP_ABI_VCRUNTIME)
  20 #  include <new.h>
  21 #else
  22 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX26 void*
  23 operator new(std::size_t, void* __p) _NOEXCEPT {
  24   return __p;
  25 }
  26 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX26 void*
  27 operator new[](std::size_t, void* __p) _NOEXCEPT {
  28   return __p;
  29 }
  30 inline _LIBCPP_HIDE_FROM_ABI void operator delete(void*, void*) _NOEXCEPT {}
  31 inline _LIBCPP_HIDE_FROM_ABI void operator delete[](void*, void*) _NOEXCEPT {}
  32 #endif
  33
  34 #endif // _LIBCPP___NEW_PLACEMENT_NEW_DELETE_H