database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-07 00:04:31 +03:00
Code Activity

MDEV-3798: [SHOW] EXPLAIN UPDATE/DELETE, Memory leak in binlog.binlog_base64_flag:

Browse Source 
- It turns out, there are statements that will call lex_start(thd->lex) 
  after parsing has been finished. lex_start() will set lex->explain=NULL,
  which will lose the pointer to already allocated Explain_plan object.
- To get rid of this, switch to lazy creation of lex->explain.  Now, it is 
  created only when we get a part ot query plan.
This commit is contained in:
Sergey Petrunya
2013-10-16 12:13:51 +04:00
parent 207f008220
commit 4bed7aa858
11 changed files with 18 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
sql/sql_insert.cc
View File

@@ -719,6 +719,7 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list,
Item *unused_conds= 0;
DBUG_ENTER("mysql_insert");
create_explain_query(thd->lex, thd->mem_root);
/*
Upgrade lock type if the requested lock is incompatible with
the current connection mode or table operation.