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
|
// RUN: %clangxx_msan -O0 -g %s -o %t && %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NO-ORIGINS < %t.out
// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 -g %s -o %t && %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ORIGINS < %t.out
// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O0 -g %s -o %t && %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ORIGINS --check-prefix=CHECK-ORIGINS-2 < %t.out
#include <sanitizer/msan_interface.h>
int main(void) {
char volatile x;
char *p = new char[320];
p[2] = p[5] = 1;
p[8] = p[9] = p[10] = p[11] = p[12] = 2;
__msan_allocated_memory(p + 4*3, 4);
__msan_allocated_memory(p + 4*4, 4);
__msan_allocated_memory(p + 4*5, 4);
__msan_allocated_memory(p + 4*6, 4);
__msan_allocated_memory(p + 4*7, 4);
__msan_allocated_memory(p + 4*8, 4);
__msan_allocated_memory(p + 4*9, 4);
__msan_allocated_memory(p + 4*10, 4);
__msan_allocated_memory(p + 4*11, 4);
__msan_allocated_memory(p + 4*12, 4);
__msan_allocated_memory(p + 4*13, 4);
__msan_allocated_memory(p + 4*14, 4);
__msan_allocated_memory(p + 4*15, 4);
__msan_allocated_memory(p + 4*16, 4);
__msan_allocated_memory(p + 4*17, 4);
__msan_allocated_memory(p + 4*18, 4);
__msan_allocated_memory(p + 4*19, 4);
__msan_allocated_memory(p + 4*20, 4);
__msan_allocated_memory(p + 4*21, 4);
__msan_allocated_memory(p + 4*22, 4);
__msan_allocated_memory(p + 4*23, 4);
__msan_allocated_memory(p + 4*24, 4);
__msan_allocated_memory(p + 4*25, 4);
__msan_allocated_memory(p + 4*26, 4);
__msan_allocated_memory(p + 4*27, 4);
__msan_allocated_memory(p + 4*28, 4);
__msan_allocated_memory(p + 4*29, 4);
__msan_allocated_memory(p + 4*30, 4);
__msan_allocated_memory(p + 4*31, 4);
p[19] = x;
__msan_print_shadow(p+5, 297);
delete[] p;
return 0;
}
// CHECK: Shadow map [0x{{.*}}, 0x{{.*}}) of [0x{{.*}}, 0x{{.*}}), 297 bytes:
// CHECK-NO-ORIGINS: 0x{{.*}}: ..00ffff 00000000 ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff
// CHECK-NO-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffff.... ........
// CHECK-ORIGINS: 0x{{.*}}: ..00ffff 00000000 ffffffff ffffffff |A . B C|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |D E F G|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |H I J K|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |L M N O|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |P Q R S|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |T U V W|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |X Y Z *|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |* * * A|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |A A A A|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |A A A A|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |A A A A|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |A A A A|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |A A A A|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |A A A A|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |A A A A|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |A A A A|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |A A A A|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffffffff ffffffff |A A A A|
// CHECK-ORIGINS: 0x{{.*}}: ffffffff ffffffff ffff.... ........ |A A A .|
// CHECK-ORIGINS: Origin A (origin_id {{.*}}):
// CHECK-ORIGINS: Uninitialized value was created by a heap allocation
// CHECK-ORIGINS: #1 {{.*}} in main{{.*}}msan_print_shadow.cpp:14
// CHECK-ORIGINS: Origin B (origin_id {{.*}}):
// CHECK-ORIGINS: Memory was marked as uninitialized
// CHECK-ORIGINS: #0 {{.*}} in __msan_allocated_memory
// CHECK-ORIGINS: #1 {{.*}} in main{{.*}}msan_print_shadow.cpp:18
// CHECK-ORIGINS: Origin C (origin_id {{.*}}):
// CHECK-ORIGINS-2: Uninitialized value was stored to memory at
// CHECK-ORIGINS-2: #0 {{.*}} in main{{.*}}msan_print_shadow.cpp:48
// CHECK-ORIGINS: Uninitialized value was created by an allocation of 'x' in the stack frame
// CHECK-ORIGINS: #0 {{.*}} in main{{.*}}msan_print_shadow.cpp:13
// CHECK-ORIGINS: Origin D (origin_id {{.*}}):
// CHECK-ORIGINS: Memory was marked as uninitialized
// CHECK-ORIGINS: #0 {{.*}} in __msan_allocated_memory
// CHECK-ORIGINS: #1 {{.*}} in main{{.*}}msan_print_shadow.cpp:20
// ...
// CHECK-ORIGINS: Origin Z (origin_id {{.*}}):
// CHECK-ORIGINS: Memory was marked as uninitialized
// CHECK-ORIGINS: #0 {{.*}} in __msan_allocated_memory
// CHECK-ORIGINS: #1 {{.*}} in main{{.*}}msan_print_shadow.cpp:42
|
