1 /* Verify that MALLOC_ALIGNMENT is honored by malloc.
2    Copyright (C) 2012-2021 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 
24 static void *
test(size_t s)25 test (size_t s)
26 {
27   void *p = malloc (s);
28 
29   printf ("malloc: %zu, %p: %zu\n", s, p,
30 	  ((uintptr_t) p) & MALLOC_ALIGN_MASK);
31   return p;
32 }
33 
34 static int
do_test(void)35 do_test (void)
36 {
37   void *p;
38   int ret = 0;
39 
40   p = test (2);
41   ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
42   free (p);
43 
44   p = test (8);
45   ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
46   free (p);
47 
48   p = test (13);
49   ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
50   free (p);
51 
52   p = test (16);
53   ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
54   free (p);
55 
56   p = test (23);
57   ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
58   free (p);
59 
60   p = test (43);
61   ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
62   free (p);
63 
64   p = test (123);
65   ret |= (uintptr_t) p & MALLOC_ALIGN_MASK;
66   free (p);
67 
68   return ret;
69 }
70 
71 #include <support/test-driver.c>
72