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| author | Sergey Petrunya <psergey@askmonty.org> | 2014-01-23 15:41:51 +0400 |
|---|---|---|
| committer | Sergey Petrunya <psergey@askmonty.org> | 2014-01-23 15:41:51 +0400 |
| commit | f0fa66a26de19d4f31a0b5466ac064650c81464a (patch) | |
| tree | f94f4339e6905578c8993d4de57af7ff7014c9be /sql/opt_subselect.cc | |
| parent | 5e02635eb846214b462ed4ab45b2142a08dc5a91 (diff) | |
| download | mariadb-git-f0fa66a26de19d4f31a0b5466ac064650c81464a.tar.gz | |
MDEV-5368: Server crashes in Item_in_subselect::optimize on ...
- convert_subq_to_sj() must connect child select's tables into
parent select's TABLE_LIST::next_local chain.
- The problem was that it took child's leaf_tables.head() which
is different. This could cause certain tables (in this bug's case,
child select's non-merged semi-join) not to be present in
TABLE_LIST::next_local chain. Which would cause non-merged semi-join
not to be initialized in setup_tables(), which would lead to
NULL pointer dereference.
Diffstat (limited to 'sql/opt_subselect.cc')
| -rw-r--r-- | sql/opt_subselect.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/opt_subselect.cc b/sql/opt_subselect.cc index ec56994f16a..b8780b4c4ca 100644 --- a/sql/opt_subselect.cc +++ b/sql/opt_subselect.cc @@ -1525,7 +1525,7 @@ static bool convert_subq_to_sj(JOIN *parent_join, Item_in_subselect *subq_pred) for (tl= (TABLE_LIST*)(parent_lex->table_list.first); tl->next_local; tl= tl->next_local) {} - tl->next_local= subq_lex->leaf_tables.head(); + tl->next_local= subq_lex->join->tables_list; /* A theory: no need to re-connect the next_global chain */ |