centipede/puzzles/uint32_cmp_1.cc

// Copyright 2022 The Centipede Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Centipede puzzle: one 4-byte cmp.
// RUN: Run && SolutionIs Fuzz

#include <cstdint>
#include <cstdlib>
#include <cstring>

// non-const, to avoid compiler optimization.
static char expected_data[] = "Fuzz";

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  uint32_t value, expected_value;
  if (size == sizeof(value)) {
    memcpy(&value, data, sizeof(value));
    memcpy(&expected_value, expected_data, sizeof(expected_value));
    if (value == expected_value) abort();
  }
  return 0;
}