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 #include <stddef.h>
5 #include <stdint.h>
6 #include <stdio.h>
7 
8 // Test for libFuzzer's "equivalence" fuzzing, part B.
9 extern "C" void LLVMFuzzerAnnounceOutput(const uint8_t *Data, size_t Size);
LLVMFuzzerTestOneInput(const uint8_t * Data,size_t Size)10 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
11   // fprintf(stderr, "B %zd\n", Size);
12   uint8_t Result[50];
13   if (Size > 50) Size = 50;
14   for (size_t i = 0; i < Size; i++)
15     Result[Size - i - 1] = Data[i];
16 
17   // Be a bit different from EquivalenceATest
18   if (Size > 10 && Data[5] == 'B' && Data[6] == 'C' && Data[7] == 'D') {
19     static int c;
20     if (!c)
21       fprintf(stderr, "ZZZZZZZ\n");
22     c = 1;
23     Result[2]++;
24   }
25 
26   LLVMFuzzerAnnounceOutput(Result, Size);
27   return 0;
28 }
29