1 // RUN: %clang_dfsan %s -o %t && %run %t
2 //
3 // REQUIRES: x86_64-target-arch
4 //
5 // Tests that labels are propagated through function calls.
6 
7 #include <sanitizer/dfsan_interface.h>
8 #include <assert.h>
9 
f(int x)10 int f(int x) {
11   int j = 2;
12   dfsan_label j_label = 2;
13   dfsan_set_label(j_label, &j, sizeof(j));
14   return x + j;
15 }
16 
main(void)17 int main(void) {
18   int i = 1;
19   dfsan_label i_label = 4;
20   dfsan_set_label(i_label, &i, sizeof(i));
21 
22   dfsan_label ij_label = dfsan_get_label(f(i));
23   assert(dfsan_has_label(ij_label, i_label));
24 
25   /* Must be consistent with the one in f(). */
26   dfsan_label j_label = 2;
27   assert(dfsan_has_label(ij_label, 2));
28 
29   return 0;
30 }
31