lib/xstdopen.h

   1 /* Ensure that stdin, stdout, stderr are open.
   2    Copyright (C) 2019-2024 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #ifdef __cplusplus
  18 extern "C" {
  19 #endif
  20
  21 /* Ensures that the file descriptors of stdin, stdout, stderr (0, 1, 2) are
  22    open.  Exits the program with an error message upon failure; the error
  23    message may not appear if stderr is closed.  */
  24 extern void xstdopen (void);
  25
  26 #ifdef __cplusplus
  27 }
  28 #endif