1 | /* Verify that MALLOC_ALIGNMENT is honored by malloc. |
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2 | Copyright (C) 2012-2022 Free Software Foundation, Inc. |
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 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <stdio.h> |
20 | #include <stdlib.h> |
21 | #include <inttypes.h> |
22 | #include <malloc-size.h> |
23 | #include <support/check.h> |
24 | |
25 | static void * |
26 | test (size_t s) |
27 | { |
28 | void *p = malloc (size: s); |
29 | |
30 | printf (format: "malloc: %zu, %p: %zu\n", s, p, |
31 | ((uintptr_t) p) & MALLOC_ALIGN_MASK); |
32 | return p; |
33 | } |
34 | |
35 | #define ALIGNED(p) (((uintptr_t) p & MALLOC_ALIGN_MASK) == 0) |
36 | |
37 | static int |
38 | do_test (void) |
39 | { |
40 | void *p; |
41 | |
42 | p = test (s: 2); |
43 | TEST_VERIFY (ALIGNED (p)); |
44 | free (ptr: p); |
45 | |
46 | p = test (s: 8); |
47 | TEST_VERIFY (ALIGNED (p)); |
48 | free (ptr: p); |
49 | |
50 | p = test (s: 13); |
51 | TEST_VERIFY (ALIGNED (p)); |
52 | free (ptr: p); |
53 | |
54 | p = test (s: 16); |
55 | TEST_VERIFY (ALIGNED (p)); |
56 | free (ptr: p); |
57 | |
58 | p = test (s: 23); |
59 | TEST_VERIFY (ALIGNED (p)); |
60 | free (ptr: p); |
61 | |
62 | p = test (s: 43); |
63 | TEST_VERIFY (ALIGNED (p)); |
64 | free (ptr: p); |
65 | |
66 | p = test (s: 123); |
67 | TEST_VERIFY (ALIGNED (p)); |
68 | free (ptr: p); |
69 | |
70 | return 0; |
71 | } |
72 | |
73 | #include <support/test-driver.c> |
74 |