==31182== Conditional jump or move depends on uninitialised value(s)
==31182==    at 0xA9188B: longest_match (deflate.c:1143)
==31182==    by 0xA92C19: deflate_slow (deflate.c:1595)
==31182==    by 0xA90C6B: deflate (deflate.c:790)
==31182==    by 0x9B447B: page_zip_compress (page0zip.c:1342)
==31182==    by 0x9A8540: page_cur_insert_rec_zip_reorg (page0cur.c:1174)
==31182==    by 0x9A8998: page_cur_insert_rec_zip (page0cur.c:1279)
==31182==    by 0x9214F9: page_cur_tuple_insert (page0cur.ic:264)
==31182==    by 0x9221A2: btr_cur_optimistic_insert (btr0cur.c:1314)
==31182==    by 0x9C99EB: row_ins_index_entry_low (row0ins.c:2087)
==31182==    by 0x9C9DFB: row_ins_index_entry (row0ins.c:2167)
==31182==    by 0x9CA057: row_ins_index_entry_step (row0ins.c:2252)
==31182==    by 0x9CA0FD: row_ins (row0ins.c:2384)
==31182==    by 0x9CA760: row_ins_step (row0ins.c:2494)
==31182==    by 0x8CBF7E: row_insert_for_mysql (row0mysql.c:1138)
==31182==    by 0x8BCF32: ha_innobase::write_row(unsigned char*) (ha_innodb.cc:4929)
==31182==    by 0x736E03: handler::ha_write_row(unsigned char*) (handler.cc:4682)