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 for a fuzzer: must find the case where a particular basic block is
6// executed many times.
7#include <cstdint>
8#include <iostream>
9
10extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
11 int Num = 0;
12 for (size_t i = 0; i < Size; i++)
13 if (Data[i] == 'A' + i)
14 Num++;
15 if (Num >= 4) {
16 std::cerr << "BINGO!\n";
17 exit(status: 1);
18 }
19 return 0;
20}
21

source code of compiler-rt/test/fuzzer/CounterTest.cpp