MDEV-25743: Unnecessary copying of table names in InnoDB dictionary

Many InnoDB data dictionary cache operations require that the
table name be copied so that it will be NUL terminated.
(For example, SYS_TABLES.NAME is not guaranteed to be NUL-terminated.)

dict_table_t::is_garbage_name(): Check if a name belongs to
the background drop table queue.

dict_check_if_system_table_exists(): Remove.

dict_sys_t::load_sys_tables(): Load the non-hard-coded system tables
SYS_FOREIGN, SYS_FOREIGN_COLS, SYS_VIRTUAL on startup.

dict_sys_t::create_or_check_sys_tables(): Replaces
dict_create_or_check_foreign_constraint_tables() and
dict_create_or_check_sys_virtual().

dict_sys_t::load_table(): Replaces dict_table_get_low()
and dict_load_table().

dict_sys_t::find_table(): Renamed from get_table().

dict_sys_t::sys_tables_exist(): Check whether all the non-hard-coded
tables SYS_FOREIGN, SYS_FOREIGN_COLS, SYS_VIRTUAL exist.

trx_t::has_stats_table_lock(): Moved to dict0stats.cc.

Some error messages will now report table names in the internal
databasename/tablename format, instead of `databasename`.`tablename`.

1 files changed, 1 insertions, 1 deletions

diff --git a/mysql-test/suite/innodb_zip/t/wl5522_debug_zip.test b/mysql-test/suite/innodb_zip/t/wl5522_debug_zip.test
index a543fc956d4..0c9bcb6cf9d 100644
--- a/mysql-test/suite/innodb_zip/t/wl5522_debug_zip.test
+++ b/mysql-test/suite/innodb_zip/t/wl5522_debug_zip.test
@@ -23,7 +23,7 @@ call mtr.add_suppression("InnoDB: Unknown index id .* on page");
 call mtr.add_suppression("InnoDB: Operating system error number");
 call mtr.add_suppression("InnoDB: The error means");
 call mtr.add_suppression("InnoDB: Cannot open datafile .*t1\\.ibd");
-call mtr.add_suppression("InnoDB: Ignoring tablespace for `test`\\.`t1`");
+call mtr.add_suppression("InnoDB: Ignoring tablespace for test/t1 ");
 FLUSH TABLES;
 
 let MYSQLD_DATADIR =`SELECT @@datadir`;