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 18 _LIBCPP_FUNC_VIS void declare_reachable(void*) {} 19 _LIBCPP_FUNC_VIS void declare_no_pointers(char*, size_t) {} 20 _LIBCPP_FUNC_VIS void undeclare_no_pointers(char*, size_t) {} 21 _LIBCPP_FUNC_VIS void* __undeclare_reachable(void* p) { return p; } 22 23 _LIBCPP_END_NAMESPACE_STD 24