| /* Ensure that stdin, stdout, stderr are open. | |
| Copyright (C) 2019-2026 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/>. */ | |
| #ifdef __cplusplus | |
| extern "C" { | |
| #endif | |
| /* Ensures that the file descriptors of stdin, stdout, stderr (0, 1, 2) are | |
| open. Exits the program with an error message upon failure; the error | |
| message may not appear if stderr is closed. */ | |
| extern void xstdopen (void); | |
| #ifdef __cplusplus | |
| } | |
| #endif |