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