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 // REQUIRES: x86_64-target-arch
   6
   7 #include <sanitizer/dfsan_interface.h>
   8
   9 int main(int argc, char *argv[]) {
  10   char volatile z1;
  11   char volatile z2;
  12   dfsan_set_label(8, (void *)&z1, sizeof(z1));
  13   dfsan_set_label(16, (void *)&z2, sizeof(z2)); // overwritting the old origin.
  14   char c = z1;
  15   dfsan_print_origin_trace(&c, "bar");
  16   return 0;
  17 }
  18
  19 // CHECK: Taint value 0x8 {{.*}} origin tracking (bar)
  20 // CHECK: Origin value: {{.*}}, Taint value was stored to memory at
  21 // CHECK: #0 {{.*}} in main {{.*}}origin_overlapped.c:[[@LINE-7]]
  22
  23 // CHECK: Origin value: {{.*}}, Taint value was created at
  24
  25 // CHECK: #0 {{.*}} in main {{.*}}origin_overlapped.c:[[@LINE-12]]