compiler-rt/test/dfsan/fncall.c

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