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 <cstdio> 11#include <cstdlib> 12#include <string> 13 14// This file defines the legacy default debug handler and related mechanisms 15// to set it. This is for backwards ABI compatibility with code that has been 16// using this debug handler previously. 17 18_LIBCPP_BEGIN_NAMESPACE_STD 19 20struct _LIBCPP_TEMPLATE_VIS __libcpp_debug_info { 21 _LIBCPP_EXPORTED_FROM_ABI string what() const; 22 23 const char* __file_; 24 int __line_; 25 const char* __pred_; 26 const char* __msg_; 27}; 28 29std::string __libcpp_debug_info::what() const { 30 string msg = __file_; 31 msg += ":" + std::to_string(__line_) + ": _LIBCPP_ASSERT '"; 32 msg += __pred_; 33 msg += "' failed. "; 34 msg += __msg_; 35 return msg; 36} 37 38_LIBCPP_NORETURN _LIBCPP_EXPORTED_FROM_ABI void __libcpp_abort_debug_function(__libcpp_debug_info const& info) { 39 std::fprintf(stderr, "%s\n", info.what().c_str()); 40 std::abort(); 41} 42 43typedef void (*__libcpp_debug_function_type)(__libcpp_debug_info const&); 44 45_LIBCPP_EXPORTED_FROM_ABI 46constinit __libcpp_debug_function_type __libcpp_debug_function = __libcpp_abort_debug_function; 47 48_LIBCPP_EXPORTED_FROM_ABI 49bool __libcpp_set_debug_function(__libcpp_debug_function_type __func) { 50 __libcpp_debug_function = __func; 51 return true; 52} 53 54_LIBCPP_END_NAMESPACE_STD 55