#ifdef ALT_BITSTREAM_READER
    if(s->gb.buffer + s->gb.index/8 >= s->buffer + s->buffer_size + FF_INPUT_BUFFER_PADDING_SIZE){
        av_log(s->avctx, AV_LOG_ERROR, "decode_block overrun by %u bytes. buffer_ptr : %p\n",
              ((s->gb.buffer + s->gb.index/8) - (s->buffer + s->buffer_size + FF_INPUT_BUFFER_PADDING_SIZE)), s->gb.buffer + s->gb.index/8);
        //return -1;
    }
#else
    if(((const uint8_t *)s->gb.buffer_ptr) >= s->buffer + s->buffer_size + FF_INPUT_BUFFER_PADDING_SIZE){
        av_log(s->avctx, AV_LOG_ERROR, "decode_block overrun by %u bytes. buffer_ptr : %p\n",
            (((const uint8_t *)s->gb.buffer_ptr) - (s->buffer + s->buffer_size + FF_INPUT_BUFFER_PADDING_SIZE)), s->gb.buffer_ptr);
        //return -1;
    }
#endif