| /* A C macro for declaring that a function does not return. |
| Copyright (C) 2011-2021 Free Software Foundation, Inc. |
| |
| This program is free software: you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published |
| by the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| #ifndef _Noreturn |
| # if (defined __cplusplus \ |
| && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \ |
| || (defined _MSC_VER && 1900 <= _MSC_VER)) \ |
| && 0) |
| /* [[noreturn]] is not practically usable, because with it the syntax |
| extern _Noreturn void func (...); |
| would not be valid; such a declaration would only be valid with 'extern' |
| and '_Noreturn' swapped, or without the 'extern' keyword. However, some |
| AIX system header files and several gnulib header files use precisely |
| this syntax with 'extern'. */ |
| # define _Noreturn [[noreturn]] |
| # elif ((!defined __cplusplus || defined __clang__) \ |
| && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \ |
| || 4 < __GNUC__ + (7 <= __GNUC_MINOR__) \ |
| || (defined __apple_build_version__ \ |
| ? 6000000 <= __apple_build_version__ \ |
| : 3 < __clang_major__ + (5 <= __clang_minor__)))) |
| /* _Noreturn works as-is. */ |
| # elif 2 < __GNUC__ + (8 <= __GNUC_MINOR__) || 0x5110 <= __SUNPRO_C |
| # define _Noreturn __attribute__ ((__noreturn__)) |
| # elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0) |
| # define _Noreturn __declspec (noreturn) |
| # else |
| # define _Noreturn |
| # endif |
| #endif |
