centipede/puzzles/memcmp_4.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 memcmp.
// Disable use_auto_dictionary so that we test other functionality.
// RUN: Run --use_auto_dictionary=false --max_len=10 && SolutionIs fuZz

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

auto volatile memcmp_no_inline = &memcmp;

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  if (size == 4 && memcmp_no_inline(data, "fuZz", 4) == 0) {
    abort();
  }
  return 0;
}