Change build directory to be "build"
[glibc/nacl-glibc.git] / stdio-common / errnobug.c
blob1c19527b7b0282e904d71d72e7593d7c7ad0b075
1 /* Regression test for reported old bug that errno is clobbered
2 by the first successful output to a stream on an unseekable object.
3 Copyright (C) 1995, 1997 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 02111-1307 USA. */
21 #include <errno.h>
22 #include <stdio.h>
23 #include <unistd.h>
25 int
26 main (void)
28 int fd[2];
29 FILE *f;
31 /* Get a stream that cannot seek. */
33 if (pipe (fd))
35 perror ("pipe");
36 return 1;
38 f = fdopen (fd[1], "w");
39 if (f == NULL)
41 perror ("fdopen");
42 return 1;
45 errno = 0;
46 if (fputs ("fnord", f) == EOF)
48 perror ("fputs");
49 return 1;
52 if (errno)
54 perror ("errno gratuitously set -- TEST FAILED");
55 return 1;
58 puts ("Test succeeded.");
59 return 0;