1 // RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 %s -o %t && \
2 // RUN:     %run %t >%t.out 2>&1
3 // RUN: FileCheck %s < %t.out
4 //
5 // REQUIRES: x86_64-target-arch
6 
7 #include <sanitizer/dfsan_interface.h>
8 
main(int argc,char * argv[])9 int main(int argc, char *argv[]) {
10   char volatile z1;
11   char volatile z2;
12   dfsan_set_label(8, (void *)&z1, sizeof(z1));
13   dfsan_set_label(16, (void *)&z2, sizeof(z2)); // overwritting the old origin.
14   char c = z1;
15   dfsan_print_origin_trace(&c, "bar");
16   return 0;
17 }
18 
19 // CHECK: Taint value 0x8 {{.*}} origin tracking (bar)
20 // CHECK: Origin value: {{.*}}, Taint value was stored to memory at
21 // CHECK: #0 {{.*}} in main {{.*}}origin_overlapped.c:[[@LINE-7]]
22 
23 // CHECK: Origin value: {{.*}}, Taint value was created at
24 
25 // CHECK: #0 {{.*}} in main {{.*}}origin_overlapped.c:[[@LINE-12]]
26