compiler-rt/test/dfsan/origin_overlapped.c

   1 // RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 %s -o %t && \
   2 // RUN:     %run %t >%t.out 2>&1
   3 // RUN: FileCheck %s < %t.out
   4
   5 #include <sanitizer/dfsan_interface.h>
   6
   7 int main(int argc, char *argv[]) {
   8   char volatile z1;
   9   char volatile z2;
  10   dfsan_set_label(8, (void *)&z1, sizeof(z1));
  11   dfsan_set_label(16, (void *)&z2, sizeof(z2)); // overwritting the old origin.
  12   char c = z1;
  13   dfsan_print_origin_trace(&c, "bar");
  14   return 0;
  15 }
  16
  17 // CHECK: Taint value 0x8 {{.*}} origin tracking (bar)
  18 // CHECK: Origin value: {{.*}}, Taint value was stored to memory at
  19 // CHECK: #0 {{.*}} in main {{.*}}origin_overlapped.c:[[@LINE-7]]
  20
  21 // CHECK: Origin value: {{.*}}, Taint value was created at
  22
  23 // CHECK: #0 {{.*}} in main {{.*}}origin_overlapped.c:[[@LINE-12]]