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
13int xx[10000];
14
15volatile int idx = 30;
16
17__attribute__((noinline))
18void fn_g(int a, int b) {
19 xx[idx] = a; xx[idx + 10] = b;
20}
21
22__attribute__((noinline))
23void fn_f(int a, int b) {
24 fn_g(a, b);
25}
26
27__attribute__((noinline))
28void fn_h() {
29 memmove(dest: &xx[24], src: &xx, n: 7500);
30}
31
32int main(int argc, char *argv[]) {
33 int volatile z1 = 0;
34 int volatile z2 = 0;
35 dfsan_set_label(label: 8, addr: (void *)&z1, size: sizeof(z1));
36 dfsan_set_label(label: 16, addr: (void *)&z2, size: sizeof(z2));
37 fn_f(a: z1, b: z2);
38 fn_h();
39 dfsan_print_origin_trace(&xx[24 + 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_memmove.c:[[@LINE-16]]
46// CHECK0: #1 {{.*}} in main {{.*}}origin_memmove.c:[[@LINE-8]]
47
48// CHECK0: Origin value: {{.*}}, Taint value was stored to memory at
49// CHECK0: #0 {{.*}} in fn_g.dfsan {{.*}}origin_memmove.c:[[@LINE-30]]
50// CHECK0: #1 {{.*}} in fn_f.dfsan {{.*}}origin_memmove.c:[[@LINE-26]]
51// CHECK0: #2 {{.*}} in main {{.*}}origin_memmove.c:[[@LINE-14]]
52
53// CHECK0: Origin value: {{.*}}, Taint value was created at
54// CHECK0: #0 {{.*}} in main {{.*}}origin_memmove.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_memmove.c:[[@LINE-29]]
59// CHECK10: #1 {{.*}} in main {{.*}}origin_memmove.c:[[@LINE-21]]
60
61// CHECK10: Origin value: {{.*}}, Taint value was stored to memory at
62// CHECK10: #0 {{.*}} in fn_g.dfsan {{.*}}origin_memmove.c:[[@LINE-43]]
63// CHECK10: #1 {{.*}} in fn_f.dfsan {{.*}}origin_memmove.c:[[@LINE-39]]
64// CHECK10: #2 {{.*}} in main {{.*}}origin_memmove.c:[[@LINE-27]]
65
66// CHECK10: Origin value: {{.*}}, Taint value was created at
67// CHECK10: #0 {{.*}} in main {{.*}}origin_memmove.c:[[@LINE-31]]
68

source code of compiler-rt/test/dfsan/origin_memmove.c