1 // RUN: %clang_dfsan %s -fsanitize-ignorelist=%S/Inputs/flags_abilist.txt -DFORCE_ZERO_LABELS -o %t && %run %t
2 // RUN: %clang_dfsan %s -o %t && %run %t
3 //
4 // REQUIRES: x86_64-target-arch
5 
6 #include <sanitizer/dfsan_interface.h>
7 
8 #include <assert.h>
9 
function_to_force_zero(int i,int * out)10 int function_to_force_zero(int i, int* out) {
11   *out = i;
12   return i;
13 }
14 
main(void)15 int main(void) {
16   int i = 1;
17   dfsan_label i_label = 2;
18   dfsan_set_label(i_label, &i, sizeof(i));
19 
20   int out = 0;
21   int ret = function_to_force_zero(i, &out);
22 
23 #ifdef FORCE_ZERO_LABELS
24   assert(dfsan_get_label(out) == 0);
25   assert(dfsan_get_label(ret) == 0);
26 #else
27   assert(dfsan_get_label(out) == i_label);
28   assert(dfsan_get_label(ret) == i_label);
29 #endif
30 
31   return 0;
32 }
33