1 // RUN: %clang_dfsan -gmlt -DOFFSET=0 -mllvm -dfsan-track-origins=1 %s -o %t && \
2 // RUN: %run %t >%t.out 2>&1
3 // RUN: FileCheck %s --check-prefix=CHECK0 < %t.out
4 //
5 // RUN: %clang_dfsan -gmlt -DOFFSET=10 -mllvm -dfsan-track-origins=1 %s -o %t && \
6 // RUN: %run %t >%t.out 2>&1
7 // RUN: FileCheck %s --check-prefix=CHECK10 < %t.out
8
9 #include <sanitizer/dfsan_interface.h>
10
11 #include <string.h>
12
13 int xx[10000];
14
15 volatile int idx = 30;
16
17 __attribute__((noinline))
fn_g(int a,int b)18 void fn_g(int a, int b) {
19 memset(&xx[idx], a, sizeof(a));
20 memset(&xx[idx + 10], b, sizeof(b));
21 }
22
23 __attribute__((noinline))
fn_f(int a,int b)24 void fn_f(int a, int b) {
25 fn_g(a, b);
26 }
27
main(int argc,char * argv[])28 int main(int argc, char *argv[]) {
29 int volatile z1;
30 int volatile z2;
31 dfsan_set_label(8, (void *)&z1, sizeof(z1));
32 dfsan_set_label(16, (void *)&z2, sizeof(z2));
33 fn_f(z1, z2);
34 dfsan_print_origin_trace(&xx[idx + OFFSET], NULL);
35 return 0;
36 }
37
38 // CHECK0: Taint value 0x8 {{.*}} origin tracking ()
39 // CHECK0: Origin value: {{.*}}, Taint value was created at
40
41 // CHECK0: #0 {{.*}} in main {{.*}}origin_memset.c:[[@LINE-10]]
42
43 // CHECK10: Taint value 0x10 {{.*}} origin tracking ()
44 // CHECK10: Origin value: {{.*}}, Taint value was created at
45
46 // CHECK10: #0 {{.*}} in main {{.*}}origin_memset.c:[[@LINE-14]]
47