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glibc/libio/tst-fwrite-error.c
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/* Test of fwrite() function, adapted from gnulib-tests in grep. | |
Copyright (C) 2011-2016 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, 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 <http://www.gnu.org/licenses/>. */ | |
#include <errno.h> | |
#include <fcntl.h> | |
#include <unistd.h> | |
#include <stdio.h> | |
static int | |
do_test (void) | |
{ | |
char tmpl[] = "/tmp/tst-fwrite-error.XXXXXX"; | |
int fd = mkstemp (tmpl); | |
if (fd == -1) | |
{ | |
printf ("mkstemp failed with errno %d\n", errno); | |
return 1; | |
} | |
FILE *fp = fdopen (fd, "w"); | |
if (fp == NULL) | |
{ | |
printf ("fdopen failed with errno %d\n", errno); | |
return 1; | |
} | |
char buf[] = "world"; | |
setvbuf (fp, NULL, _IONBF, 0); | |
close (fd); | |
unlink (tmpl); | |
errno = 0; | |
int ret = fwrite (buf, 1, sizeof (buf), fp); | |
if (ret != 0) | |
{ | |
printf ("fwrite returned %d\n", ret); | |
return 1; | |
} | |
if (errno != EBADF) | |
{ | |
printf ("Errno is not EBADF: %d\n", errno); | |
return 1; | |
} | |
if (ferror (fp) == 0) | |
{ | |
printf ("ferror not set\n"); | |
return 1; | |
} | |
return 0; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |