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