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-rw-r--r--tests/test-fread.c100
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diff --git a/tests/test-fread.c b/tests/test-fread.c
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-/* Test of fread() function.
- Copyright (C) 2011-2015 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 <config.h>
-
-#include <stdio.h>
-
-#include "signature.h"
-SIGNATURE_CHECK (fread, size_t, (void *, size_t, size_t, FILE *));
-
-#include <errno.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-#include "msvc-inval.h"
-
-#include "macros.h"
-
-int
-main (int argc, char **argv)
-{
- const char *filename = "test-fread.txt";
-
- /* We don't have an fread() function that installs an invalid parameter
- handler so far. So install that handler here, explicitly. */
-#if HAVE_MSVC_INVALID_PARAMETER_HANDLER \
- && MSVC_INVALID_PARAMETER_HANDLING == DEFAULT_HANDLING
- gl_msvc_inval_ensure_handler ();
-#endif
-
- /* Prepare a file. */
- {
- const char text[] = "hello world";
- int fd = open (filename, O_RDWR | O_CREAT | O_TRUNC, 0600);
- ASSERT (fd >= 0);
- ASSERT (write (fd, text, sizeof (text)) == sizeof (text));
- ASSERT (close (fd) == 0);
- }
-
- /* Test that fread() sets errno if someone else closes the stream
- fd behind the back of stdio. */
- {
- FILE *fp = fopen (filename, "r");
- char buf[5];
- ASSERT (fp != NULL);
- ASSERT (close (fileno (fp)) == 0);
- errno = 0;
- ASSERT (fread (buf, 1, sizeof (buf), fp) == 0);
- ASSERT (errno == EBADF);
- ASSERT (ferror (fp));
- fclose (fp);
- }
-
- /* Test that fread() sets errno if the stream was constructed with
- an invalid file descriptor. */
- {
- FILE *fp = fdopen (-1, "r");
- if (fp != NULL)
- {
- char buf[1];
- errno = 0;
- ASSERT (fread (buf, 1, 1, fp) == 0);
- ASSERT (errno == EBADF);
- ASSERT (ferror (fp));
- fclose (fp);
- }
- }
- {
- FILE *fp;
- close (99);
- fp = fdopen (99, "r");
- if (fp != NULL)
- {
- char buf[1];
- errno = 0;
- ASSERT (fread (buf, 1, 1, fp) == 0);
- ASSERT (errno == EBADF);
- ASSERT (ferror (fp));
- fclose (fp);
- }
- }
-
- /* Clean up. */
- unlink (filename);
-
- return 0;
-}