1*2946cd70SChandler Carruth // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
2*2946cd70SChandler Carruth // See https://llvm.org/LICENSE.txt for license information.
3*2946cd70SChandler Carruth // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
410ab2aceSGeorge Karpenkov 
510ab2aceSGeorge Karpenkov // Test that libFuzzer itself does not read out of bounds.
610ab2aceSGeorge Karpenkov #include <assert.h>
710ab2aceSGeorge Karpenkov #include <cstddef>
810ab2aceSGeorge Karpenkov #include <cstdint>
910ab2aceSGeorge Karpenkov #include <cstdlib>
1010ab2aceSGeorge Karpenkov #include <cstring>
1110ab2aceSGeorge Karpenkov #include <iostream>
1210ab2aceSGeorge Karpenkov 
1310ab2aceSGeorge Karpenkov static volatile int Sink;
1410ab2aceSGeorge Karpenkov 
LLVMFuzzerTestOneInput(const uint8_t * Data,size_t Size)1510ab2aceSGeorge Karpenkov extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
1610ab2aceSGeorge Karpenkov   if (Size < 5) return 0;
1710ab2aceSGeorge Karpenkov   const char *Ch = reinterpret_cast<const char *>(Data);
1810ab2aceSGeorge Karpenkov   if (Ch[Size - 3] == 'a')
1910ab2aceSGeorge Karpenkov     Sink = strncmp(Ch + Size - 3, "abcdefg", 6);
2010ab2aceSGeorge Karpenkov   return 0;
2110ab2aceSGeorge Karpenkov }
2210ab2aceSGeorge Karpenkov 
23