Elena Stepanova added a comment - 2014-01-12 15:57 - edited That's because it crashes. #2 0x00000000008487dd in handle_fatal_signal (sig=11) at 10.0/sql/signal_handler.cc:262 #3 <signal handler called> #4 0x0000000000ec17aa in insert_dynamic (array=0x58, element=0x7ff1a6ffa208) at 10.0/mysys/array.c:89 #5 0x00000000005e1a46 in add_role_user_mapping (grantee=0x7ff1a896e070, role=0x0) at 10.0/sql/sql_acl.cc:2342 #6 0x00000000005f5695 in mysql_create_user (thd=0x7ff1b5f4c070, list=..., handle_as_role=true) at 10.0/sql/sql_acl.cc:9169 #7 0x0000000000668835 in mysql_execute_command (thd=0x7ff1b5f4c070) at 10.0/sql/sql_parse.cc:4038 #8 0x000000000066eb28 in mysql_parse (thd=0x7ff1b5f4c070, rawbuf=0x7ff1a8822088 "create role ''", length=14, parser_state=0x7ff1a6ffd630) at 10.0/sql/sql_parse.cc:6394 #9 0x00000000006619e2 in dispatch_command (command=COM_QUERY, thd=0x7ff1b5f4c070, packet=0x7ff1af24c071 "create role ''", packet_length=14) at 10.0/sql/sql_parse.cc:1296 #10 0x0000000000660d84 in do_command (thd=0x7ff1b5f4c070) at 10.0/sql/sql_parse.cc:993 #11 0x000000000077a4e5 in do_handle_one_connection (thd_arg=0x7ff1b5f4c070) at 10.0/sql/sql_connect.cc:1379 #12 0x000000000077a238 in handle_one_connection (arg=0x7ff1b5f4c070) at 10.0/sql/sql_connect.cc:1293 #13 0x0000000000a9d219 in pfs_spawn_thread (arg=0x7ff1af64cf90) at 10.0/storage/perfschema/pfs.cc:1853 #14 0x00007ff1d5371b50 in start_thread (arg=<optimized out>) at pthread_create.c:304 #15 0x00007ff1d3ec0a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112