[#MDEV-9841] Window functions: embedded server fails to start due to error code conflicts

In window functions tree, embedded mtr fails like so:

./mysql-test-run --embedded t/alias.test

...

Installing system database...

==============================================================================

TEST                                      RESULT   TIME (ms) or COMMENT

--------------------------------------------------------------------------

worker[1] Using MTR_BUILD_THREAD 300, with reserved ports 16000..16019

main.alias                               [ fail ]

        Test ended at 2016-03-31 13:23:14

CURRENT_TEST: main.alias

mysqltest: Can't initialize MySQL server

The failure comes from here

  #0  my_error_register (get_errmsgs=0x555555d69448 <get_server_errmsgs()>, first=1000, last=2001) at /home/psergey/dev-git/10.2-window-funcs-r10/mysys/my_error.c:245

  #1  0x0000555555d695ad in init_errmessage () at /home/psergey/dev-git/10.2-window-funcs-r10/sql/derror.cc:106

  #2  0x00005555559ceaa7 in init_common_variables () at /home/psergey/dev-git/10.2-window-funcs-r10/libmysqld/../sql/mysqld.cc:4515

  #3  0x00005555559d4e9b in init_embedded_server (argc=125, argv=0x5555575b1e18, groups=0x555556ab2300 <embedded_server_groups>) at /home/psergey/dev-git/10.2-window-funcs-r10/libmysqld/lib_sql.cc:559

  #4  0x00005555559b9063 in mysql_server_init (argc=7, argv=0x555556ca5540 <embedded_server_args>, groups=0x555556ab2300 <embedded_server_groups>) at /home/psergey/dev-git/10.2-window-funcs-r10/libmysql/libmysql.c:181

  #5  0x000055555597c7b3 in main (argc=18, argv=0x7fffffffe018) at /home/psergey/dev-git/10.2-window-funcs-r10/client/mysqltest.cc:8974

We are in

my_error_register (get_errmsgs=0x555555d69448 <get_server_errmsgs()>, first=1000, last=2001)

Trying to register server error messages with codes in [1000, 2000] range.

The problem is that error code 2000 is already used by the client error messages:

(gdb) p my_errmsgs_list->meh_next[0]

  $71 = {meh_next = 0x0, get_errmsgs = 0x555555be708d <get_client_errmsgs>, meh_first = 2000, meh_last = 2061}

[MDEV-9841] Window functions: embedded server fails to start due to error code conflicts Created: 2016-03-31 Updated: 2016-04-14 Resolved: 2016-04-06
Status:	Closed
Project:	MariaDB Server
Component/s:	Optimizer - Window functions
Fix Version/s:	N/A

[MDEV-9841] Window functions: embedded server fails to start due to error code conflicts Created: 2016-03-31 Updated: 2016-04-14 Resolved: 2016-04-06