blob: 721051ffaf11d4c7550918ade7de791d37ed5881 (
plain)
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
|
// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-store=region -fblocks -verify %s
int* f1() {
int x = 0;
return &x; // expected-warning{{Address of stack memory associated with local variable 'x' returned}} expected-warning{{address of stack memory associated with local variable 'x' returned}}
}
int* f2(int y) {
return &y; // expected-warning{{Address of stack memory associated with local variable 'y' returned}} expected-warning{{address of stack memory associated with parameter 'y' returned}}
}
int* f3(int x, int *y) {
int w = 0;
if (x)
y = &w;
return y; // expected-warning{{Address of stack memory associated with local variable 'w' returned to caller}}
}
void* compound_literal(int x, int y) {
if (x)
return &(unsigned short){((unsigned short)0x22EF)}; // expected-warning{{Address of stack memory}}
int* array[] = {};
struct s { int z; double y; int w; };
if (y)
return &((struct s){ 2, 0.4, 5 * 8 }); // expected-warning{{Address of stack memory}}
void* p = &((struct s){ 42, 0.4, x ? 42 : 0 });
return p; // expected-warning{{Address of stack memory}}
}
void* alloca_test() {
void* p = __builtin_alloca(10);
return p; // expected-warning{{Address of stack memory}}
}
int array_test(int x[2]) {
return x[0]; // no-warning
}
struct baz {
int x;
int y[2];
};
int struct_test(struct baz byVal, int flag) {
if (flag)
return byVal.x; // no-warning
else {
return byVal.y[0]; // no-warning
}
}
typedef int (^ComparatorBlock)(int a, int b);
ComparatorBlock test_return_block(void) {
// This block is a global since it has no captures.
ComparatorBlock b = ^int(int a, int b){ return a > b; };
return b; // no-warning
}
ComparatorBlock test_return_block_with_capture(int x) {
// This block is stack allocated because it has captures.
ComparatorBlock b = ^int(int a, int b){ return a > b + x; };
return b; // expected-warning{{Address of stack-allocated block}}
}
ComparatorBlock test_return_block_neg_aux(void);
ComparatorBlock test_return_block_neg(void) {
ComparatorBlock b = test_return_block_neg_aux();
return b; // no-warning
}
// <rdar://problem/7523821>
int *rdar_7523821_f2() {
int a[3];
return a; // expected-warning 2 {{ddress of stack memory associated with local variable 'a' returned}}
};
// Handle blocks that have no captures or are otherwise declared 'static'.
// <rdar://problem/10348049>
typedef int (^RDar10348049)(int value);
RDar10348049 test_rdar10348049(void) {
static RDar10348049 b = ^int(int x) {
return x + 2;
};
return b; // no-warning
}
void testRegister(register const char *reg) {
if (reg) (void)reg[0];
}
void callTestRegister() {
char buf[20];
testRegister(buf); // no-warning
}
|
