MDEV-16465 Invalid (old?) table or database name or hang in ha_innobase::delete_table and log semaphore wait upon concurrent DDL with foreign keys

Disable "Invalid (old?) table or database name" warning when
converting table names in InnoDB's get_foreign_key_info().

Because a name can be a temporary table name during the ALTER TABLE,
and some other thread can do SHOW CREATE TABLE for the other table
in the FK relationships _anytime_.

Author: vuvova

storage/innobase/handler/ha_innodb.cc

@@ -12429,7 +12429,7 @@ get_foreign_key_info(
 
 	/* Referenced (parent) table name */
 	ptr = dict_remove_db_name(foreign->referenced_table_name);
-	len = filename_to_tablename(ptr, name_buff, sizeof(name_buff));
+	len = filename_to_tablename(ptr, name_buff, sizeof(name_buff), 1);
 	f_key_info.referenced_table = thd_make_lex_string(
 		thd, 0, name_buff, static_cast<unsigned int>(len), 1);
 
@@ -12445,7 +12445,7 @@ get_foreign_key_info(
 
 	/* Dependent (child) table name */
 	ptr = dict_remove_db_name(foreign->foreign_table_name);
-	len = filename_to_tablename(ptr, name_buff, sizeof(name_buff));
+	len = filename_to_tablename(ptr, name_buff, sizeof(name_buff), 1);
 	f_key_info.foreign_table = thd_make_lex_string(
 		thd, 0, name_buff, static_cast<unsigned int>(len), 1);
 

storage/xtradb/handler/ha_innodb.cc

@@ -13295,7 +13295,7 @@ get_foreign_key_info(
 
 	/* Referenced (parent) table name */
 	ptr = dict_remove_db_name(foreign->referenced_table_name);
-	len = filename_to_tablename(ptr, name_buff, sizeof(name_buff));
+	len = filename_to_tablename(ptr, name_buff, sizeof(name_buff), 1);
 	f_key_info.referenced_table = thd_make_lex_string(
 		thd, 0, name_buff, static_cast<unsigned int>(len), 1);
 
@@ -13311,7 +13311,7 @@ get_foreign_key_info(
 
 	/* Dependent (child) table name */
 	ptr = dict_remove_db_name(foreign->foreign_table_name);
-	len = filename_to_tablename(ptr, name_buff, sizeof(name_buff));
+	len = filename_to_tablename(ptr, name_buff, sizeof(name_buff), 1);
 	f_key_info.foreign_table = thd_make_lex_string(
 		thd, 0, name_buff, static_cast<unsigned int>(len), 1);