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/* Test of fwrite() function, adapted from gnulib-tests in grep.
Copyright (C) 2011-2019 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>
#include <stdlib.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"
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