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
|
// RUN: %clang_dfsan -gmlt -DOFFSET=0 -mllvm -dfsan-track-origins=1 %s -o %t && \
// RUN: %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK0 < %t.out
//
// RUN: %clang_dfsan -gmlt -DOFFSET=10 -mllvm -dfsan-track-origins=1 %s -o %t && \
// RUN: %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK10 < %t.out
#include <sanitizer/dfsan_interface.h>
#include <string.h>
int xx[10000];
volatile int idx = 30;
__attribute__((noinline))
void fn_g(int a, int b) {
memset(&xx[idx], a, sizeof(a));
memset(&xx[idx + 10], b, sizeof(b));
}
__attribute__((noinline))
void fn_f(int a, int b) {
fn_g(a, b);
}
int main(int argc, char *argv[]) {
int volatile z1;
int volatile z2;
dfsan_set_label(8, (void *)&z1, sizeof(z1));
dfsan_set_label(16, (void *)&z2, sizeof(z2));
fn_f(z1, z2);
dfsan_print_origin_trace(&xx[idx + OFFSET], NULL);
return 0;
}
// CHECK0: Taint value 0x8 {{.*}} origin tracking ()
// CHECK0: Origin value: {{.*}}, Taint value was created at
// CHECK0: #0 {{.*}} in main {{.*}}origin_memset.c:[[@LINE-10]]
// CHECK10: Taint value 0x10 {{.*}} origin tracking ()
// CHECK10: Origin value: {{.*}}, Taint value was created at
// CHECK10: #0 {{.*}} in main {{.*}}origin_memset.c:[[@LINE-14]]
|
