  static void  Move_CVT_Stretched( EXEC_OPS  Int index, TT_F26Dot6  value )
  {
    int ov=CUR.cvt[index];
    (void)ov; /* Quiet compiler warning in release build. */
    CUR.cvt[index] += MulDiv_Round( value, 0x10000, CURRENT_Ratio() );
    DBG_PRINT3(" cvt[%d]%d:=%d", index, ov, CUR.cvt[index]);
  }

The product reads data past the end, or before the beginning, of the intended buffer.