1 /* Test for open_memstream BZ #21037.
2 Copyright (C) 2018-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
19 #include "tst-memstream.h"
22 mcheck_abort (enum mcheck_status ev
)
24 printf ("mecheck failed with status %d\n", (int) ev
);
31 mcheck_pedantic (mcheck_abort
);
33 /* Check if freopen proper fflush the stream. */
35 CHAR_T old
[] = W("old");
39 FILE *fp
= OPEN_MEMSTREAM (&buf
, &size
);
40 TEST_VERIFY_EXIT (fp
!= NULL
);
43 /* The stream buffer pointer should be updated with only a fflush or
45 TEST_COMPARE (STRCMP (buf
, old
), 0);
47 /* The old stream should be fflush the stream, even for an invalid
49 FILE *nfp
= freopen ("invalid-file", "r", fp
);
50 TEST_VERIFY_EXIT (nfp
== NULL
);
52 TEST_VERIFY (STRCMP (buf
, W("new")) == 0);
53 TEST_COMPARE_BLOB (buf
, STRLEN (buf
) * sizeof (CHAR_T
),
54 W("new"), STRLEN (W("new")) * sizeof (CHAR_T
));
56 TEST_COMPARE (fclose (fp
), 0);
64 #include <support/test-driver.c>