65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/* Test for open_memstream BZ #21037.
|
|
Copyright (C) 2018-2022 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include "tst-memstream.h"
|
|
|
|
static void
|
|
mcheck_abort (enum mcheck_status ev)
|
|
{
|
|
printf ("mecheck failed with status %d\n", (int) ev);
|
|
exit (1);
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
mcheck_pedantic (mcheck_abort);
|
|
|
|
/* Check if freopen proper fflush the stream. */
|
|
{
|
|
CHAR_T old[] = W("old");
|
|
CHAR_T *buf = old;
|
|
size_t size;
|
|
|
|
FILE *fp = OPEN_MEMSTREAM (&buf, &size);
|
|
TEST_VERIFY_EXIT (fp != NULL);
|
|
|
|
FPUTS (W("new"), fp);
|
|
/* The stream buffer pointer should be updated with only a fflush or
|
|
fclose. */
|
|
TEST_COMPARE (STRCMP (buf, old), 0);
|
|
|
|
/* The old stream should be fflush the stream, even for an invalid
|
|
streams. */
|
|
FILE *nfp = freopen ("invalid-file", "r", fp);
|
|
TEST_VERIFY_EXIT (nfp == NULL);
|
|
|
|
TEST_VERIFY (STRCMP (buf, W("new")) == 0);
|
|
TEST_COMPARE_BLOB (buf, STRLEN (buf) * sizeof (CHAR_T),
|
|
W("new"), STRLEN (W("new")) * sizeof (CHAR_T));
|
|
|
|
TEST_COMPARE (fclose (fp), 0);
|
|
|
|
free (buf);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|