blob: 5bc287a100631673975877b374b8f29bc6ecfa8e (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/* Test for pvalloc.
Copyright (C) 2013-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <malloc.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <libc-diag.h>
static int errors = 0;
static void
merror (const char *msg)
{
++errors;
printf ("Error: %s\n", msg);
}
static int
do_test (void)
{
void *p;
unsigned long pagesize = getpagesize ();
unsigned long ptrval;
int save;
errno = 0;
DIAG_PUSH_NEEDS_COMMENT;
#if __GNUC_PREREQ (7, 0)
/* GCC 7 warns about too-large allocations; here we want to test
that they fail. */
DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than=");
#endif
/* An attempt to allocate a huge value should return NULL and set
errno to ENOMEM. */
p = pvalloc (-1);
#if __GNUC_PREREQ (7, 0)
DIAG_POP_NEEDS_COMMENT;
#endif
save = errno;
if (p != NULL)
merror ("pvalloc (-1) succeeded.");
if (p == NULL && save != ENOMEM)
merror ("pvalloc (-1) errno is not set correctly");
free (p);
errno = 0;
/* Test to expose integer overflow in malloc internals from BZ #15855. */
p = pvalloc (-pagesize);
save = errno;
if (p != NULL)
merror ("pvalloc (-pagesize) succeeded.");
if (p == NULL && save != ENOMEM)
merror ("pvalloc (-pagesize) errno is not set correctly");
free (p);
/* A zero-sized allocation should succeed with glibc, returning a
non-NULL value. */
p = pvalloc (0);
if (p == NULL)
merror ("pvalloc (0) failed.");
free (p);
/* Check the alignment of the returned pointer is correct. */
p = pvalloc (32);
if (p == NULL)
merror ("pvalloc (32) failed.");
ptrval = (unsigned long) p;
if ((ptrval & (pagesize - 1)) != 0)
merror ("returned pointer is not page aligned.");
free (p);
return errors != 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
|
