1 // RUN: %clang_dfsan %s -fsanitize-ignorelist=%S/Inputs/flags_abilist.txt -mllvm -dfsan-debug-nonzero-labels -o %t && DFSAN_OPTIONS=warn_unimplemented=1 %run %t 2>&1 | FileCheck %s
2 // RUN: %clang_dfsan %s -fsanitize-ignorelist=%S/Inputs/flags_abilist.txt -mllvm -dfsan-debug-nonzero-labels -o %t && DFSAN_OPTIONS=warn_unimplemented=0 %run %t 2>&1 | count 0
3 // RUN: %clang_dfsan %s -fsanitize-ignorelist=%S/Inputs/flags_abilist.txt -mllvm -dfsan-debug-nonzero-labels -o %t && DFSAN_OPTIONS=warn_nonzero_labels=1 %run %t 2>&1 | FileCheck --check-prefix=CHECK-NONZERO %s
4 //
5 // REQUIRES: x86_64-target-arch
6
7 // Tests that flags work correctly.
8
9 #include <sanitizer/dfsan_interface.h>
10
f(int i)11 int f(int i) {
12 return i;
13 }
14
main(void)15 int main(void) {
16 int i = 1;
17 dfsan_label i_label = 2;
18 dfsan_set_label(i_label, &i, sizeof(i));
19
20 // CHECK: WARNING: DataFlowSanitizer: call to uninstrumented function f
21 // CHECK-NOT: WARNING: DataFlowSanitizer: saw nonzero label
22 // CHECK-NONZERO: WARNING: DataFlowSanitizer: saw nonzero label
23 f(i);
24
25 return 0;
26 }
27