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f9123b50 | 1 | /* fmemopen tests for BZ#1930 and BZ#20005. |
04277e02 | 2 | Copyright (C) 2016-2019 Free Software Foundation, Inc. |
f9123b50 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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
f9123b50 AZ |
18 | |
19 | #include <assert.h> | |
20 | #include <stdio.h> | |
21 | #include <string.h> | |
22 | #include <sys/types.h> | |
23 | ||
24 | ||
25 | /* Check if fflush does not reset the file position. */ | |
26 | static int | |
27 | do_test (void) | |
28 | { | |
29 | char buffer[500] = "x"; | |
30 | ||
31 | FILE *stream = fmemopen (buffer, sizeof (buffer), "r+"); | |
32 | if (stream == NULL) | |
33 | { | |
34 | printf ("error: fmemopen could not open stream\n"); | |
35 | return 1; | |
36 | } | |
37 | ||
38 | const char test[] = "test"; | |
39 | ||
40 | size_t r = fwrite (test, sizeof (char), sizeof (test), stream); | |
41 | if (r != sizeof (test)) | |
42 | { | |
c4f50205 | 43 | printf ("error: fwrite returned %zu, expected %zu\n", r, sizeof (test)); |
f9123b50 AZ |
44 | return 1; |
45 | } | |
46 | ||
47 | r = ftell (stream); | |
48 | if (r != sizeof (test)) | |
49 | { | |
c4f50205 | 50 | printf ("error: ftell return %zu, expected %zu\n", r, sizeof (test)); |
f9123b50 AZ |
51 | return 1; |
52 | } | |
53 | ||
54 | if (fflush (stream) != 0) | |
55 | { | |
56 | printf ("error: fflush failed\n"); | |
57 | return 1; | |
58 | } | |
59 | ||
60 | r = ftell (stream); | |
61 | if (r != sizeof (test)) | |
62 | { | |
c4f50205 | 63 | printf ("error: ftell return %zu, expected %zu\n", r, sizeof (test)); |
f9123b50 AZ |
64 | return 1; |
65 | } | |
66 | ||
67 | return 0; | |
68 | } | |
69 | ||
70 | #define TEST_FUNCTION do_test () | |
71 | #include "../test-skeleton.c" |