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// Simple test for a fuzzer. The fuzzer must find the string "Hi!".
6#include <assert.h>
7#include <cstdint>
8#include <cstdio>
9#include <cstdlib>
10
11static volatile int Sink;
12
13extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
14 assert(Data);
15 if (Size > 0 && Data[0] == 'H') {
16 Sink = 1;
17 if (Size > 1 && Data[1] == 'i') {
18 Sink = 2;
19 if (Size > 2 && Data[2] == '!') {
20 fprintf(stderr, format: "BINGO; Found the target, exiting\n");
21 exit(status: 0);
22 }
23 }
24 }
25 return 0;
26}
27
28

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