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0b727ed4 | 1 | /* Test for open_memstream BZ #21037. |
04277e02 | 2 | Copyright (C) 2018-2019 Free Software Foundation, Inc. |
0b727ed4 AZ |
3 | This file is part of the GNU C Library. |
4 | ||
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. | |
9 | ||
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. | |
14 | ||
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 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include "tst-memstream.h" | |
20 | ||
21 | static void | |
22 | mcheck_abort (enum mcheck_status ev) | |
23 | { | |
24 | printf ("mecheck failed with status %d\n", (int) ev); | |
25 | exit (1); | |
26 | } | |
27 | ||
28 | static int | |
29 | do_test (void) | |
30 | { | |
31 | mcheck_pedantic (mcheck_abort); | |
32 | ||
33 | /* Check if freopen proper fflush the stream. */ | |
34 | { | |
35 | CHAR_T old[] = W("old"); | |
36 | CHAR_T *buf = old; | |
37 | size_t size; | |
38 | ||
39 | FILE *fp = OPEN_MEMSTREAM (&buf, &size); | |
40 | TEST_VERIFY_EXIT (fp != NULL); | |
41 | ||
42 | FPUTS (W("new"), fp); | |
43 | /* The stream buffer pointer should be updated with only a fflush or | |
44 | fclose. */ | |
45 | TEST_COMPARE (STRCMP (buf, old), 0); | |
46 | ||
47 | /* The old stream should be fflush the stream, even for an invalid | |
48 | streams. */ | |
49 | FILE *nfp = freopen ("invalid-file", "r", fp); | |
50 | TEST_VERIFY_EXIT (nfp == NULL); | |
51 | ||
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)); | |
55 | ||
56 | TEST_COMPARE (fclose (fp), 0); | |
57 | ||
58 | free (buf); | |
59 | } | |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
64 | #include <support/test-driver.c> |