zlib库中uncompress返回Z_STREAM_ERROR是怎么回事

zlib库中uncompress返回Z_STREAM_ERROR是怎么回事。zlib库中uncompress返回Z_STREAM_ERROR是怎么回事

 compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR if there was not enough room in the output buffer, Z_STREAM_ERROR if the level parameter is invalid.