Hi,

how-to-repeat:

mysql> create table a (a blob); Query OK, 0 rows affected (0.01 sec)

mysql> insert into a values (point(1,1)); Query OK, 1 row affected (0.02 sec)

mysql> select linestring((select a from b), point(2,2)); works ok

mysql> select polygon(linestring(point(1,1), point(2,2))); works ok

mysql> select polygon(linestring((select a from b), point(2,2))); ERROR 2013: Lost connection to MySQL server during query

Stack-Trace:

0x80f112b handle_segfault + 447 0x40047bc4 _end + 935313260 0x8260dbd sp_get_geometry_mbr + 17 0x8260c30 sp_mbr_from_wkb + 84 0x8260b56 sp_make_key + 86 0x823acdb _mi_make_key + 107 0x82434a7 mi_write + 839 0x81524a1 ha_myisam::write_row(char *) + 105 0x812a447 write_record(st_table *, st_copy_info *) + 643 0x8129cb4 mysql_insert(THD *, st_table_list *, List<Item> &, List<List<Item>

0x80fe22e mysql_execute_command(THD *) + 7570 0x8100d01 mysql_parse(THD *, char *, unsigned int) + 229 0x80fb90c dispatch_command(enum_server_command, THD *, char *, unsigned int) + 1732 0x80fb23d do_command(THD *) + 301 0x80fa947 handle_one_connection + 723 0x40044f37 _end + 935301855 0x401a0baa _end + 936726354

Regards

Georg