1 /* Test of dprintf() function. 2 Copyright (C) 2011-2021 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 #include <config.h> 18 19 #include <stdio.h> 20 21 #include "signature.h" 22 SIGNATURE_CHECK (dprintf, int, (int, const char *, ...)); 23 24 #include <errno.h> 25 #include <unistd.h> 26 27 #include "macros.h" 28 29 int 30 main (int argc, char *argv[]) /* */ 31 { 32 /* Test behaviour for invalid file descriptors. */ 33 { 34 errno = 0; 35 ASSERT (dprintf (-1, "test") == -1); 36 ASSERT (errno == EBADF); 37 } 38 { 39 close (99); 40 errno = 0; 41 ASSERT (dprintf (99, "test") == -1); 42 ASSERT (errno == EBADF); 43 } 44 45 return 0; 46 }