gmalloc.c
6.36 KB
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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
// RUN: %clang_cc1 -analyze -analyzer-checker=core,unix.Malloc -analyzer-store=region -verify %s
#include "Inputs/system-header-simulator.h"
typedef void* gpointer;
typedef const void* gconstpointer;
typedef unsigned long gsize;
typedef unsigned int guint;
gpointer g_malloc(gsize n_bytes);
gpointer g_malloc0(gsize n_bytes);
gpointer g_realloc(gpointer mem, gsize n_bytes);
gpointer g_try_malloc(gsize n_bytes);
gpointer g_try_malloc0(gsize n_bytes);
gpointer g_try_realloc(gpointer mem, gsize n_bytes);
gpointer g_malloc_n(gsize n_blocks, gsize n_block_bytes);
gpointer g_malloc0_n(gsize n_blocks, gsize n_block_bytes);
gpointer g_realloc_n(gpointer mem, gsize n_blocks, gsize n_block_bytes);
gpointer g_try_malloc_n(gsize n_blocks, gsize n_block_bytes);
gpointer g_try_malloc0_n(gsize n_blocks, gsize n_block_bytes);
gpointer g_try_realloc_n(gpointer mem, gsize n_blocks, gsize n_block_bytes);
void g_free(gpointer mem);
gpointer g_memdup(gconstpointer mem, guint byte_size);
static const gsize n_bytes = 1024;
void f1() {
gpointer g1 = g_malloc(n_bytes);
gpointer g2 = g_malloc0(n_bytes);
g1 = g_realloc(g1, n_bytes * 2);
gpointer g3 = g_try_malloc(n_bytes);
gpointer g4 = g_try_malloc0(n_bytes);
g3 = g_try_realloc(g3, n_bytes * 2);
gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char));
gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char));
gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char));
g_free(g1);
g_free(g2);
g_free(g2); // expected-warning{{Attempt to free released memory}}
}
void f2() {
gpointer g1 = g_malloc(n_bytes);
gpointer g2 = g_malloc0(n_bytes);
g1 = g_realloc(g1, n_bytes * 2);
gpointer g3 = g_try_malloc(n_bytes);
gpointer g4 = g_try_malloc0(n_bytes);
g3 = g_try_realloc(g3, n_bytes * 2);
gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char));
gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char));
gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char));
g_free(g1);
g_free(g2);
g_free(g3);
g3 = g_memdup(g3, n_bytes); // expected-warning{{Use of memory after it is freed}}
}
void f3() {
gpointer g1 = g_malloc(n_bytes);
gpointer g2 = g_malloc0(n_bytes);
g1 = g_realloc(g1, n_bytes * 2);
gpointer g3 = g_try_malloc(n_bytes);
gpointer g4 = g_try_malloc0(n_bytes);
g3 = g_try_realloc(g3, n_bytes * 2); // expected-warning{{Potential leak of memory pointed to by 'g4'}}
gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g6'}}
gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g5'}}
gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g8'}}
g_free(g1); // expected-warning{{Potential leak of memory pointed to by 'g7'}}
g_free(g2);
g_free(g3);
}
void f4() {
gpointer g1 = g_malloc(n_bytes);
gpointer g2 = g_malloc0(n_bytes);
g1 = g_realloc(g1, n_bytes * 2);
gpointer g3 = g_try_malloc(n_bytes);
gpointer g4 = g_try_malloc0(n_bytes);
g3 = g_try_realloc(g3, n_bytes * 2);
gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g6'}}
gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g5'}}
gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g8'}}
g_free(g1); // expected-warning{{Potential leak of memory pointed to by 'g7'}}
g_free(g2);
g_free(g3);
g_free(g4);
}
void f5() {
gpointer g1 = g_malloc(n_bytes);
gpointer g2 = g_malloc0(n_bytes);
g1 = g_realloc(g1, n_bytes * 2);
gpointer g3 = g_try_malloc(n_bytes);
gpointer g4 = g_try_malloc0(n_bytes);
g3 = g_try_realloc(g3, n_bytes * 2);
gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g6'}}
gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char));
gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g8'}}
g_free(g1); // expected-warning{{Potential leak of memory pointed to by 'g7'}}
g_free(g2);
g_free(g3);
g_free(g4);
g_free(g5);
}
void f6() {
gpointer g1 = g_malloc(n_bytes);
gpointer g2 = g_malloc0(n_bytes);
g1 = g_realloc(g1, n_bytes * 2);
gpointer g3 = g_try_malloc(n_bytes);
gpointer g4 = g_try_malloc0(n_bytes);
g3 = g_try_realloc(g3, n_bytes * 2);
gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char));
gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char));
gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g8'}}
g_free(g1); // expected-warning{{Potential leak of memory pointed to by 'g7'}}
g_free(g2);
g_free(g3);
g_free(g4);
g_free(g5);
g_free(g6);
}
void f7() {
gpointer g1 = g_malloc(n_bytes);
gpointer g2 = g_malloc0(n_bytes);
g1 = g_realloc(g1, n_bytes * 2);
gpointer g3 = g_try_malloc(n_bytes);
gpointer g4 = g_try_malloc0(n_bytes);
g3 = g_try_realloc(g3, n_bytes * 2);
gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char));
gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char));
gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g8'}}
g_free(g1);
g_free(g2);
g_free(g3);
g_free(g4);
g_free(g5);
g_free(g6);
g_free(g7);
}