1 // RUN: %clang_dfsan %s -o %t && %run %t
2 // RUN: %clang_dfsan -mllvm -dfsan-args-abi %s -o %t && %run %t
3 //
4 // REQUIRES: x86_64-target-arch
5 
6 // Tests that labels are propagated through loads and stores.
7 
8 #include <sanitizer/dfsan_interface.h>
9 #include <assert.h>
10 
11 int main(void) {
12   int i = 1;
13   dfsan_label i_label = dfsan_create_label("i", 0);
14   dfsan_set_label(i_label, &i, sizeof(i));
15 
16   dfsan_label new_label = dfsan_get_label(i);
17   assert(i_label == new_label);
18 
19   dfsan_label read_label = dfsan_read_label(&i, sizeof(i));
20   assert(i_label == read_label);
21 
22   dfsan_label j_label = dfsan_create_label("j", 0);
23   dfsan_add_label(j_label, &i, sizeof(i));
24 
25   read_label = dfsan_read_label(&i, sizeof(i));
26   assert(dfsan_has_label(read_label, i_label));
27   assert(dfsan_has_label(read_label, j_label));
28 
29   return 0;
30 }
31