anchor.diff:      _h[1] = 0xefcdab89;
       _h[2] = 0x98badcfe;
       _h[3] = 0x10325476;
  -  }
  -
  -  // Returns a new instance of this Hash.
  -  _MD5 newInstance() {
  -    return _MD5();
     }
   
     static const _k = [
  
positive.code:     _h[4] = 0xC3D2E1F0;
    }
  
    // Returns a new instance of this Hash.
    _SHA1 newInstance() {
      return _SHA1();
    }
  
    // Compute one iteration of the SHA1 algorithm with a chunk of
    // 16 32-bit pieces.
    void _updateHash(List<int> m) {
      assert(m.length == 16);
  
      var a = _h[0];
  
negative.code:     return _chunkSizeInWords * _BYTES_PER_WORD;
    }
  
    // One round of the hash computation.
    _updateHash(Uint32List m);
  
    // Helper methods.
    int _add32(int x, int y) => (x + y) & _MASK_32;
  