33 lines · cpp
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-exception4 5// Source code for a simple DSO.6 7#include <cstdint>8#include <cstdio>9#include <cstdlib>10#include <cstring>11extern int DSO1(int a);12extern int DSO2(int a);13extern int DSOTestExtra(int a);14 15static volatile int *nil = 0;16 17extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {18 int x, y, z;19 if (Size < sizeof(int) * 3) {20 x = y = z = 0;21 } else {22 memcpy(&x, Data + 0 * sizeof(int), sizeof(int));23 memcpy(&y, Data + 1 * sizeof(int), sizeof(int));24 memcpy(&z, Data + 2 * sizeof(int), sizeof(int));25 }26 int sum = DSO1(x) + DSO2(y) + (z ? DSOTestExtra(z) : 0);27 if (sum == 3) {28 fprintf(stderr, "BINGO %d %d %d\n", x, y, z);29 *nil = 0;30 }31 return 0;32}33