v1/__new/placement_new_delete.h

0001 //===----------------------------------------------------------------------===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef _LIBCPP___NEW_PLACEMENT_NEW_DELETE_H
0010 #define _LIBCPP___NEW_PLACEMENT_NEW_DELETE_H
0011
0012 #include <__config>
0013 #include <__cstddef/size_t.h>
0014
0015 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0016 #  pragma GCC system_header
0017 #endif
0018
0019 #if defined(_LIBCPP_ABI_VCRUNTIME)
0020 #  include <new.h>
0021 #else
0022 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX26 void*
0023 operator new(std::size_t, void* __p) _NOEXCEPT {
0024   return __p;
0025 }
0026 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX26 void*
0027 operator new[](std::size_t, void* __p) _NOEXCEPT {
0028   return __p;
0029 }
0030 inline _LIBCPP_HIDE_FROM_ABI void operator delete(void*, void*) _NOEXCEPT {}
0031 inline _LIBCPP_HIDE_FROM_ABI void operator delete[](void*, void*) _NOEXCEPT {}
0032 #endif
0033
0034 #endif // _LIBCPP___NEW_PLACEMENT_NEW_DELETE_H