Server crashes on DROP USER <rolename>

create role r1;

drop user r1;

#3  <signal handler called>

#4  0x00000000005e5d54 in st_lex_user::is_role (this=0x7f191144d120) at 10.0/sql/structs.h:193

#5  0x00000000005dcb97 in append_user (str=0x7f193e4ce840, user=0x7f191144d120) at 10.0/sql/sql_acl.cc:9061

#6  0x00000000005dd3e9 in mysql_drop_user (thd=0x7f19213f5070, list=..., handle_as_role=false) at 10.0/sql/sql_acl.cc:9246

#7  0x0000000000652a92 in mysql_execute_command (thd=0x7f19213f5070) at 10.0/sql/sql_parse.cc:4050

#8  0x0000000000658f26 in mysql_parse (thd=0x7f19213f5070, rawbuf=0x7f191144d088 "drop user r1", length=12, parser_state=0x7f193e4cf4b0) at 10.0/sql/sql_parse.cc:6394

#9  0x000000000064b8a8 in dispatch_command (command=COM_QUERY, thd=0x7f19213f5070, packet=0x7f1921447071 "drop user r1", packet_length=12) at 10.0/sql/sql_parse.cc:1296

#10 0x000000000064abf6 in do_command (thd=0x7f19213f5070) at 10.0/sql/sql_parse.cc:993

#11 0x000000000076b719 in do_handle_one_connection (thd_arg=0x7f19213f5070) at 10.0/sql/sql_connect.cc:1379

#12 0x000000000076b46c in handle_one_connection (arg=0x7f19213f5070) at 10.0/sql/sql_connect.cc:1293

#13 0x0000000000a121af in pfs_spawn_thread (arg=0x7f1921739030) at 10.0/storage/perfschema/pfs.cc:1853

#14 0x00007f193d8b8e9a in start_thread (arg=0x7f193e4d0700) at pthread_create.c:308

#15 0x00007f193c7ac3fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112

revision-id: elenst@opensuse.home-20131228163657-kk32bmtqogy61mwm

revno: 3962

branch-nick: 10.0