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 // REQUIRES: x86_64-target-arch
10
11 #include <sanitizer/dfsan_interface.h>
12
13 #include <string.h>
14
15 int xx[10000];
16
17 volatile int idx = 30;
18
19 __attribute__((noinline))
fn_g(int a,int b)20 void fn_g(int a, int b) {
21 xx[idx] = a; xx[idx + 10] = b;
22 }
23
24 __attribute__((noinline))
fn_f(int a,int b)25 void fn_f(int a, int b) {
26 fn_g(a, b);
27 }
28
29 __attribute__((noinline))
fn_h()30 void fn_h() {
31 memmove(&xx[24], &xx, 7500);
32 }
33
main(int argc,char * argv[])34 int main(int argc, char *argv[]) {
35 int volatile z1 = 0;
36 int volatile z2 = 0;
37 dfsan_set_label(8, (void *)&z1, sizeof(z1));
38 dfsan_set_label(16, (void *)&z2, sizeof(z2));
39 fn_f(z1, z2);
40 fn_h();
41 dfsan_print_origin_trace(&xx[24 + idx + OFFSET], NULL);
42 return 0;
43 }
44
45 // CHECK0: Taint value 0x8 {{.*}} origin tracking ()
46 // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at
47 // CHECK0: #0 {{.*}} in fn_h.dfsan {{.*}}origin_memmove.c:[[@LINE-16]]
48 // CHECK0: #1 {{.*}} in main {{.*}}origin_memmove.c:[[@LINE-8]]
49
50 // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at
51 // CHECK0: #0 {{.*}} in fn_g.dfsan {{.*}}origin_memmove.c:[[@LINE-30]]
52 // CHECK0: #1 {{.*}} in fn_f.dfsan {{.*}}origin_memmove.c:[[@LINE-26]]
53 // CHECK0: #2 {{.*}} in main {{.*}}origin_memmove.c:[[@LINE-14]]
54
55 // CHECK0: Origin value: {{.*}}, Taint value was created at
56 // CHECK0: #0 {{.*}} in main {{.*}}origin_memmove.c:[[@LINE-19]]
57
58 // CHECK10: Taint value 0x10 {{.*}} origin tracking ()
59 // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at
60 // CHECK10: #0 {{.*}} in fn_h.dfsan {{.*}}origin_memmove.c:[[@LINE-29]]
61 // CHECK10: #1 {{.*}} in main {{.*}}origin_memmove.c:[[@LINE-21]]
62
63 // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at
64 // CHECK10: #0 {{.*}} in fn_g.dfsan {{.*}}origin_memmove.c:[[@LINE-43]]
65 // CHECK10: #1 {{.*}} in fn_f.dfsan {{.*}}origin_memmove.c:[[@LINE-39]]
66 // CHECK10: #2 {{.*}} in main {{.*}}origin_memmove.c:[[@LINE-27]]
67
68 // CHECK10: Origin value: {{.*}}, Taint value was created at
69 // CHECK10: #0 {{.*}} in main {{.*}}origin_memmove.c:[[@LINE-31]]
70