when we update thd->db in replication, it's safer to update thd->db_length too.

This does not fix any known bug, but is still a good idea.

1 files changed, 9 insertions, 0 deletions

diff --git a/sql/sql_db.cc b/sql/sql_db.cc
index 3d877403813..c8874701aa1 100644
--- a/sql/sql_db.cc
+++ b/sql/sql_db.cc
@@ -385,6 +385,15 @@ err:
 }
 
 
+/*
+  Changes the current database.
+
+  NOTES
+    Do as little as possible in this function, as it is not called for the
+    replication slave SQL thread (for that thread, setting of thd->db is done
+    in ::exec_event() methods of log_event.cc).
+*/
+
 bool mysql_change_db(THD *thd,const char *name)
 {
   int length, db_length;