kc3-lang/angle/src/common/third_party/xxhash/xxhash_fuzzer.cpp

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• Author : Jamie Madill
  Date : 2019-02-07 09:09:41
  Hash : 238c19e1
  Message : Add fuzzer for xxHash. Local testing did not turn up any crashes. Bug: angleproject:2983 Change-Id: I5e87ed0768e5bc4454c1a896f96d09ddd92baf44 Reviewed-on: https://chromium-review.googlesource.com/c/1458656 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

• src/common/third_party/xxhash/xxhash_fuzzer.cpp

• //
  // Copyright 2019 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // xxHash Fuzzer test:
  //      Integration with Chromium's libfuzzer for xxHash.
  
  #include <cstddef>
  #include <cstdint>
  #include <cstring>
  
  #include "xxhash.h"
  
  extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
  {
  #if !defined(XXH_NO_LONG_LONG)
      // Test 64-bit hash.
      size_t seedSize64 = sizeof(unsigned long long);
      if (size < seedSize64)
      {
          XXH64(data, size, 0ull);
      }
      else
      {
          unsigned long long seed64;
          memcpy(&seed64, data, seedSize64);
          XXH64(&data[seedSize64], size - seedSize64, seed64);
      }
  #endif  // !defined(XXH_NO_LONG_LONG)
  
      // Test 32-bit hash.
      size_t seedSize32 = sizeof(unsigned int);
      if (size < seedSize32)
      {
          XXH64(data, size, 0ull);
      }
      else
      {
          unsigned long long seed32;
          memcpy(&seed32, data, seedSize32);
          XXH32(&data[seedSize32], size - seedSize32, seed32);
      }
  
      return 0;
  }