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
|
// RUN: %clang_cc1 -analyze -analyzer-store=region -analyzer-checker=core,unix.Malloc -fblocks -verify %s
// RUN: %clang_cc1 -analyze -analyzer-store=region -analyzer-checker=core,alpha.unix.MallocWithAnnotations -fblocks -verify %s
void free(void *);
void t1 () {
int a[] = { 1 };
free(a); // expected-warning {{Argument to free() is the address of the local variable 'a', which is not memory allocated by malloc()}}
}
void t2 () {
int a = 1;
free(&a); // expected-warning {{Argument to free() is the address of the local variable 'a', which is not memory allocated by malloc()}}
}
void t3 () {
static int a[] = { 1 };
free(a); // expected-warning {{Argument to free() is the address of the static variable 'a', which is not memory allocated by malloc()}}
}
void t4 (char *x) {
free(x); // no-warning
}
void t5 () {
extern char *ptr();
free(ptr()); // no-warning
}
void t6 () {
free((void*)1000); // expected-warning {{Argument to free() is a constant address (1000), which is not memory allocated by malloc()}}
}
void t7 (char **x) {
free(*x); // no-warning
}
void t8 (char **x) {
// ugh
free((*x)+8); // no-warning
}
void t9 () {
label:
free(&&label); // expected-warning {{Argument to free() is the address of the label 'label', which is not memory allocated by malloc()}}
}
void t10 () {
free((void*)&t10); // expected-warning {{Argument to free() is the address of the function 't10', which is not memory allocated by malloc()}}
}
void t11 () {
char *p = (char*)__builtin_alloca(2);
free(p); // expected-warning {{Argument to free() was allocated by alloca(), not malloc()}}
}
void t12 () {
free(^{return;}); // expected-warning {{Argument to free() is a block, which is not memory allocated by malloc()}}
}
void t13 (char a) {
free(&a); // expected-warning {{Argument to free() is the address of the parameter 'a', which is not memory allocated by malloc()}}
}
static int someGlobal[2];
void t14 () {
free(someGlobal); // expected-warning {{Argument to free() is the address of the global variable 'someGlobal', which is not memory allocated by malloc()}}
}
void t15 (char **x, int offset) {
// Unknown value
free(x[offset]); // no-warning
}
|
