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 // Test that libFuzzer itself does not read out of bounds.
6 #include <assert.h>
7 #include <cstddef>
8 #include <cstdint>
9 #include <cstdlib>
10 #include <cstring>
11 #include <iostream>
12 
13 static volatile int Sink;
14 
LLVMFuzzerTestOneInput(const uint8_t * Data,size_t Size)15 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
16   if (Size < 5) return 0;
17   const char *Ch = reinterpret_cast<const char *>(Data);
18   if (Ch[Size - 3] == 'a')
19     Sink = strncmp(Ch + Size - 3, "abcdefg", 6);
20   return 0;
21 }
22 
23