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| author | Varun Gupta <varun.gupta@mariadb.com> | 2019-01-24 20:47:46 +0530 |
|---|---|---|
| committer | Varun Gupta <varun.gupta@mariadb.com> | 2019-01-24 20:47:46 +0530 |
| commit | 036ca990abddbc9b93f45904ccabd5ec4bd5b396 (patch) | |
| tree | bddbc693f6b7b3d02cb99ad63439519debcbe7c9 /sql/sql_lex.cc | |
| parent | edeba0c8733409865c3abcab881af0d48b7be94f (diff) | |
| download | mariadb-git-036ca990abddbc9b93f45904ccabd5ec4bd5b396.tar.gz | |
MDEV-18255: Server crashes in Bitmap<64u>::intersect
Calling st_select_lex::update_used_tables in JOIN::optimize_unflattened_subqueries
only when we are sure that the join have not been cleaned up.
This can happen for a case when we have a non-merged semi-join and an impossible
where which would lead to the cleanup of the join which has the non-merged semi-join
Diffstat (limited to 'sql/sql_lex.cc')
| -rw-r--r-- | sql/sql_lex.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index 08c169c5999..2fb239ed498 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -3551,7 +3551,8 @@ bool st_select_lex::optimize_unflattened_subqueries(bool const_only) inner_join->select_options|= SELECT_DESCRIBE; } res= inner_join->optimize(); - sl->update_used_tables(); + if (!inner_join->cleaned) + sl->update_used_tables(); sl->update_correlated_cache(); is_correlated_unit|= sl->is_correlated; inner_join->select_options= save_options; |