1*81ad6265SDimitry Andric //===----------------------------------------------------------------------===// 2*81ad6265SDimitry Andric // 3*81ad6265SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*81ad6265SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*81ad6265SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*81ad6265SDimitry Andric // 7*81ad6265SDimitry Andric //===----------------------------------------------------------------------===// 8*81ad6265SDimitry Andric 9*81ad6265SDimitry Andric #ifndef _LIBCPP___UTILITY_UNREACHABLE_H 10*81ad6265SDimitry Andric #define _LIBCPP___UTILITY_UNREACHABLE_H 11*81ad6265SDimitry Andric 12*81ad6265SDimitry Andric #include <__config> 13*81ad6265SDimitry Andric #include <cstdlib> 14*81ad6265SDimitry Andric 15*81ad6265SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 16*81ad6265SDimitry Andric # pragma GCC system_header 17*81ad6265SDimitry Andric #endif 18*81ad6265SDimitry Andric 19*81ad6265SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 20*81ad6265SDimitry Andric 21*81ad6265SDimitry Andric _LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI inline void __libcpp_unreachable() 22*81ad6265SDimitry Andric { 23*81ad6265SDimitry Andric #if __has_builtin(__builtin_unreachable) 24*81ad6265SDimitry Andric __builtin_unreachable(); 25*81ad6265SDimitry Andric #else 26*81ad6265SDimitry Andric std::abort(); 27*81ad6265SDimitry Andric #endif 28*81ad6265SDimitry Andric } 29*81ad6265SDimitry Andric 30*81ad6265SDimitry Andric #if _LIBCPP_STD_VER > 20 31*81ad6265SDimitry Andric 32*81ad6265SDimitry Andric [[noreturn]] _LIBCPP_HIDE_FROM_ABI inline void unreachable() { __libcpp_unreachable(); } 33*81ad6265SDimitry Andric 34*81ad6265SDimitry Andric #endif // _LIBCPP_STD_VER > 20 35*81ad6265SDimitry Andric 36*81ad6265SDimitry Andric _LIBCPP_END_NAMESPACE_STD 37*81ad6265SDimitry Andric 38*81ad6265SDimitry Andric #endif 39