1 // This file is distributed under the University of Illinois Open Source
2 // License. See LICENSE.TXT for details.
3 
4 // Simple test for a fuzzer. The fuzzer must find the deep recursion.
5 // To generate a crashy input:
6 // for((i=0;i<110;i++)); do echo -n ABCDEFGHIJ  >> INPUT; done
7 #include <cstddef>
8 #include <cstdint>
9 #include <cstdlib>
10 
11 static volatile int Sink;
12 
13 void Recursive(const uint8_t *Data, size_t Size, int Depth) {
14   if (Depth > 1000) abort();
15   if (!Size) return;
16   if (*Data == ('A' + Depth % 10))
17     Recursive(Data + 1, Size - 1, Depth + 1);
18   Sink++;
19 }
20 
21 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
22   Recursive(Data, Size, 0);
23   return 0;
24 }
25 
26