| 1 | /* Verify that MALLOC_ALIGNMENT is honored by malloc. |
|---|---|
| 2 | Copyright (C) 2012-2024 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 |