1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP___VERBOSE_ABORT 11#define _LIBCPP___VERBOSE_ABORT 12 13#include <__availability> 14#include <__config> 15 16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17# pragma GCC system_header 18#endif 19 20// Provide a default implementation of __libcpp_verbose_abort if we know that neither the built 21// library not the user is providing one. Otherwise, just declare it and use the one from the 22// built library or the one provided by the user. 23// 24// We can't provide a great implementation because it needs to be pretty much 25// dependency-free (this is included everywhere else in the library). 26#if defined(_LIBCPP_HAS_NO_VERBOSE_ABORT_IN_LIBRARY) && !defined(_LIBCPP_AVAILABILITY_CUSTOM_VERBOSE_ABORT_PROVIDED) 27 28extern "C" void abort(); 29 30_LIBCPP_BEGIN_NAMESPACE_STD 31 32_LIBCPP_NORETURN _LIBCPP_ATTRIBUTE_FORMAT(__printf__, 1, 2) _LIBCPP_HIDE_FROM_ABI inline 33void __libcpp_verbose_abort(const char *, ...) { 34 ::abort(); 35 __builtin_unreachable(); // never reached, but needed to tell the compiler that the function never returns 36} 37 38_LIBCPP_END_NAMESPACE_STD 39 40#else 41 42_LIBCPP_BEGIN_NAMESPACE_STD 43 44_LIBCPP_NORETURN _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_ATTRIBUTE_FORMAT(__printf__, 1, 2) 45void __libcpp_verbose_abort(const char *__format, ...); 46 47_LIBCPP_END_NAMESPACE_STD 48 49#endif 50 51#endif // _LIBCPP___VERBOSE_ABORT 52