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 20 struct _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 what() const29std::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 __libcpp_abort_debug_function(__libcpp_debug_info const & info)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 43 typedef void (*__libcpp_debug_function_type)(__libcpp_debug_info const&); 44 45 _LIBCPP_EXPORTED_FROM_ABI 46 constinit __libcpp_debug_function_type __libcpp_debug_function = __libcpp_abort_debug_function; 47 48 _LIBCPP_EXPORTED_FROM_ABI __libcpp_set_debug_function(__libcpp_debug_function_type __func)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