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

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• Hash : 5ef3960b
  Author :
  Date : 2022-08-29T12:50:26
  

  Use correct seed type for XXH32 fuzzer
  
  Patch by: David Kilzer <ddkilzer@apple.com>
  Use unsigned int as the seed type as expected,
  instead of unsigned long long. Helps compiling
  with strict compile flags.
  
  Also fix a bug where short buffers would test
  XXH64 instead of intended XXH32.
  
  Bug: angleproject:7618
  Change-Id: If63318fbc932349db4ab82aa8abadc9bab655989
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3860830
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Auto-Submit: Kimmo Kinnunen <kkinnunen@apple.com>
  

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• 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.
      unsigned long long seed64 = 0ull;
      size_t seedSize64         = sizeof(seed64);
      if (size >= seedSize64)
      {
          memcpy(&seed64, data, seedSize64);
      }
      else
      {
          seedSize64 = 0;
      }
      XXH64(&data[seedSize64], size - seedSize64, seed64);
  #endif  // !defined(XXH_NO_LONG_LONG)
  
      // Test 32-bit hash.
      unsigned int seed32 = 0u;
      size_t seedSize32   = sizeof(seed32);
      if (size >= seedSize32)
      {
          memcpy(&seed32, data, seedSize32);
      }
      else
      {
          seedSize32 = 0;
      }
      XXH32(&data[seedSize32], size - seedSize32, seed32);
      return 0;
  }
  

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