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

25 lines
698 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: find interesting value of array index.
#include <assert.h>
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <iostream>
static volatile uint8_t Sink;
const int kArraySize = 32505854; // 0x01effffe
uint8_t array[kArraySize];
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
if (Size != 8)
return 0;
uint64_t a = 0;
memcpy(&a, Data, sizeof(a));
a &= 0x1fffffff;
Sink = array[a % (kArraySize + 1)];
return 0;
}