1 /* Open a file, reusing a given stream, with error checking. 2 Copyright (C) 2009-2021 Free Software Foundation, Inc. 3 4 This file is free software: you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published 6 by the Free Software Foundation; either version 3 of the License, 7 or (at your option) any later version. 8 9 This file 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 #include <stdio.h> 18 19 #ifdef __cplusplus 20 extern "C" { 21 #endif 22 23 /* Opens the file FILENAME with mode MODE, reusing the given stream FP. 24 Upon failure, emits an error message and exits the program. */ 25 void xfreopen (char const *filename, char const *mode, FILE *fp); 26 27 #ifdef __cplusplus 28 } 29 #endif 30