Chandler Carruth | 2946cd7 | 2019-01-19 08:50:56 +0000 | [diff] [blame] | 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 |
George Karpenkov | 10ab2ac | 2017-08-21 23:25:50 +0000 | [diff] [blame] | 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 | |
| 12 | int 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 | |
| 21 | extern "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 | |