69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/* Test of fwrite() function, adapted from gnulib-tests in grep.
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Copyright (C) 2011-2022 Free Software Foundation, Inc.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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static int
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do_test (void)
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{
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char tmpl[] = "/tmp/tst-fwrite-error.XXXXXX";
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int fd = mkstemp (tmpl);
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if (fd == -1)
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{
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printf ("mkstemp failed with errno %d\n", errno);
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return 1;
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}
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FILE *fp = fdopen (fd, "w");
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if (fp == NULL)
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{
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printf ("fdopen failed with errno %d\n", errno);
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return 1;
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}
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char buf[] = "world";
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setvbuf (fp, NULL, _IONBF, 0);
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close (fd);
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unlink (tmpl);
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errno = 0;
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int ret = fwrite (buf, 1, sizeof (buf), fp);
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if (ret != 0)
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{
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printf ("fwrite returned %d\n", ret);
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return 1;
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}
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if (errno != EBADF)
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{
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printf ("Errno is not EBADF: %d\n", errno);
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return 1;
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}
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if (ferror (fp) == 0)
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{
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printf ("ferror not set\n");
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return 1;
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}
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return 0;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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