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.
6 // Needs to find a string "FUZZxxxxxxxxxxxxMxxE", where 'x' is any byte.
7 #include <assert.h>
8 #include <cstddef>
9 #include <cstdint>
10 #include <cstdlib>
11 #include <cstdio>
12 
13 extern "C" bool Func1(const uint8_t *Data, size_t Size);
14 extern "C" bool Func2(const uint8_t *Data, size_t Size);
15 
16 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
17   if (Size >= 20
18       && Data[0] == 'F'
19       && Data[1] == 'U'
20       && Data[2] == 'Z'
21       && Data[3] == 'Z'
22       && Func1(Data, Size)
23       && Func2(Data, Size)) {
24         fprintf(stderr, "BINGO\n");
25         abort();
26   }
27   return 0;
28 }
29 
30 extern "C"
31 __attribute__((noinline))
32 bool Func1(const uint8_t *Data, size_t Size) {
33   // assumes Size >= 5, doesn't check it.
34   return Data[16] == 'M';
35 }
36 
37 extern "C"
38 __attribute__((noinline))
39 bool Func2(const uint8_t *Data, size_t Size) {
40   return Size >= 20 && Data[19] == 'E';
41 }
42 
43 
44