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 interesting switch value.
5#include <cstdint>
6#include <cstdlib>
7#include <cstdio>
8#include <cstring>
9#include <cstddef>
10
11int Switch(int a) {
12  switch(a) {
13    case 100001: return 1;
14    case 100002: return 2;
15    case 100003: return 4;
16  }
17  return 0;
18}
19
20extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
21  const int N = 3;
22  if (Size < N * sizeof(int)) return 0;
23  int Res = 0;
24  for (int i = 0; i < N; i++) {
25    int X;
26    memcpy(&X, Data + i * sizeof(int), sizeof(int));
27    Res += Switch(X);
28  }
29  if (Res == 5 || Res == 3 || Res == 6 || Res == 7) {
30    fprintf(stderr, "BINGO; Found the target, exiting; Res=%d\n", Res);
31    exit(1);
32  }
33  return 0;
34}
35
36