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// Tests that flags work correctly.
6
7#include <sanitizer/dfsan_interface.h>
8
9int f(int i) {
10 return i;
11}
12
13int main(void) {
14 int i = 1;
15 dfsan_label i_label = 2;
16 dfsan_set_label(label: i_label, addr: &i, size: 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}
25

source code of compiler-rt/test/dfsan/flags.c