llvm-project/compiler-rt/test/fuzzer/NullDerefTest.cpp

28 lines
732 B
C++

// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// Simple test for a fuzzer. The fuzzer must find the string "Hi!".
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <cstdio>
static volatile int Sink;
static volatile int *Null = 0;
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
if (Size > 0 && Data[0] == 'H') {
Sink = 1;
if (Size > 1 && Data[1] == 'i') {
Sink = 2;
if (Size > 2 && Data[2] == '!') {
printf("Found the target, dereferencing NULL\n");
*Null = 1;
}
}
}
return 0;
}