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
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/* Minimal tests to verify libc_malloc_debug.so functionality.
Copyright (C) 2021 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 <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <shlib-compat.h>
#include <libc-diag.h>
#include <support/check.h>
#include <support/support.h>
extern void (*volatile __free_hook) (void *, const void *);
extern void *(*volatile __malloc_hook)(size_t, const void *);
extern void *(*volatile __realloc_hook)(void *, size_t, const void *);
extern void *(*volatile __memalign_hook)(size_t, size_t, const void *);
int hook_count, call_count;
DIAG_PUSH_NEEDS_COMMENT;
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations");
void
free_called (void *mem, const void *address)
{
hook_count++;
__free_hook = NULL;
free (mem);
__free_hook = free_called;
}
void *
malloc_called (size_t bytes, const void *address)
{
hook_count++;
__malloc_hook = NULL;
void *mem = malloc (bytes);
__malloc_hook = malloc_called;
return mem;
}
void *
realloc_called (void *oldptr, size_t bytes, const void *address)
{
hook_count++;
__realloc_hook = NULL;
void *mem = realloc (oldptr, bytes);
__realloc_hook = realloc_called;
return mem;
}
void *
calloc_called (size_t n, size_t size, const void *address)
{
hook_count++;
__malloc_hook = NULL;
void *mem = calloc (n, size);
__malloc_hook = malloc_called;
return mem;
}
void *
memalign_called (size_t align, size_t size, const void *address)
{
hook_count++;
__memalign_hook = NULL;
void *mem = memalign (align, size);
__memalign_hook = memalign_called;
return mem;
}
static void initialize_hooks (void)
{
__free_hook = free_called;
__malloc_hook = malloc_called;
__realloc_hook = realloc_called;
__memalign_hook = memalign_called;
}
void (*__malloc_initialize_hook) (void) = initialize_hooks;
compat_symbol_reference (libc, __malloc_initialize_hook,
__malloc_initialize_hook, GLIBC_2_0);
compat_symbol_reference (libc, __free_hook,
__free_hook, GLIBC_2_0);
compat_symbol_reference (libc, __malloc_hook,
__malloc_hook, GLIBC_2_0);
compat_symbol_reference (libc, __realloc_hook,
__realloc_hook, GLIBC_2_0);
compat_symbol_reference (libc, __memalign_hook,
__memalign_hook, GLIBC_2_0);
DIAG_POP_NEEDS_COMMENT;
static int
do_test (void)
{
void *p;
p = malloc (0);
TEST_VERIFY_EXIT (p != NULL);
call_count++;
p = realloc (p, 0);
TEST_VERIFY_EXIT (p == NULL);
call_count++;
p = calloc (512, 1);
TEST_VERIFY_EXIT (p != NULL);
call_count++;
free (p);
call_count++;
p = memalign (0x100, 0x100);
TEST_VERIFY_EXIT (p != NULL);
call_count++;
free (p);
call_count++;
printf ("call_count: %d, hook_count: %d\n", call_count, hook_count);
#ifdef HOOKS_ENABLED
TEST_VERIFY_EXIT (call_count == hook_count);
#else
TEST_VERIFY_EXIT (hook_count == 0);
#endif
exit (0);
}
#include <support/test-driver.c>
|
