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 #include <__config>
10 #include <memory>
11 
12 // Support for garbage collection was removed in C++23 by https://wg21.link/P2186R2. Libc++ implements
13 // that removal as an extension in all Standard versions. However, we still define the functions that
14 // were once part of the library's ABI for backwards compatibility.
15 
16 _LIBCPP_BEGIN_NAMESPACE_STD
17 
declare_reachable(void *)18 _LIBCPP_EXPORTED_FROM_ABI void declare_reachable(void*) {}
declare_no_pointers(char *,size_t)19 _LIBCPP_EXPORTED_FROM_ABI void declare_no_pointers(char*, size_t) {}
undeclare_no_pointers(char *,size_t)20 _LIBCPP_EXPORTED_FROM_ABI void undeclare_no_pointers(char*, size_t) {}
__undeclare_reachable(void * p)21 _LIBCPP_EXPORTED_FROM_ABI void* __undeclare_reachable(void* p) { return p; }
22 
23 _LIBCPP_END_NAMESPACE_STD
24