test/dfsan/flags.c

   1 // RUN: %clang_dfsan -m64 %s -fsanitize-blacklist=%S/Inputs/flags_abilist.txt -mllvm -dfsan-debug-nonzero-labels -o %t && %t 2>&1 | FileCheck %s
   2 // RUN: %clang_dfsan -m64 %s -fsanitize-blacklist=%S/Inputs/flags_abilist.txt -mllvm -dfsan-debug-nonzero-labels -o %t && DFSAN_OPTIONS=warn_unimplemented=0 %t 2>&1 | count 0
   3 // RUN: %clang_dfsan -m64 %s -fsanitize-blacklist=%S/Inputs/flags_abilist.txt -mllvm -dfsan-debug-nonzero-labels -o %t && DFSAN_OPTIONS=warn_nonzero_labels=1 %t 2>&1 | FileCheck --check-prefix=CHECK-NONZERO %s
   4
   5 // Tests that flags work correctly.
   6
   7 #include <sanitizer/dfsan_interface.h>
   8
   9 int f(int i) {
  10   return i;
  11 }
  12
  13 int main(void) {
  14   int i = 1;
  15   dfsan_label i_label = dfsan_create_label("i", 0);
  16   dfsan_set_label(i_label, &i, sizeof(i));
  17
  18   // CHECK: WARNING: DataFlowSanitizer: call to uninstrumented function f
  19   // CHECK-NOT: WARNING: DataFlowSanitizer: saw nonzero label
  20   // CHECK-NONZERO: WARNING: DataFlowSanitizer: saw nonzero label
  21   f(i);
  22
  23   return 0;
  24 }