fncall.c revision 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0 
1// RUN: %clang_dfsan -m64 %s -o %t && %run %t
2// RUN: %clang_dfsan -mllvm -dfsan-args-abi -m64 %s -o %t && %run %t
3
4// Tests that labels are propagated through function calls.
5
6#include <sanitizer/dfsan_interface.h>
7#include <assert.h>
8
9int f(int x) {
10  int j = 2;
11  dfsan_label j_label = dfsan_create_label("j", 0);
12  dfsan_set_label(j_label, &j, sizeof(j));
13  return x + j;
14}
15
16int main(void) {
17  int i = 1;
18  dfsan_label i_label = dfsan_create_label("i", 0);
19  dfsan_set_label(i_label, &i, sizeof(i));
20
21  dfsan_label ij_label = dfsan_get_label(f(i));
22  assert(dfsan_has_label(ij_label, i_label));
23  assert(dfsan_has_label_with_desc(ij_label, "j"));
24
25  return 0;
26}
27