1// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
2// See https://llvm.org/LICENSE.txt for license information.
3// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
4
5// Simple test for a fuzzer. The fuzzer must find the interesting switch value.
6#include <cstddef>
7#include <cstdint>
8#include <cstdio>
9#include <cstdlib>
10#include <cstring>
11
12int Switch(int a) {
13 switch(a) {
14 case 100001: return 1;
15 case 100002: return 2;
16 case 100003: return 4;
17 }
18 return 0;
19}
20
21extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
22 const int N = 3;
23 if (Size < N * sizeof(int)) return 0;
24 int Res = 0;
25 for (int i = 0; i < N; i++) {
26 int X;
27 memcpy(&X, Data + i * sizeof(int), sizeof(int));
28 Res += Switch(X);
29 }
30 if (Res == 5 || Res == 3 || Res == 6 || Res == 7) {
31 fprintf(stderr, "BINGO; Found the target, exiting; Res=%d\n", Res);
32 exit(1);
33 }
34 return 0;
35}
36
37