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| author | Sergey Petrunya <psergey@askmonty.org> | 2013-09-26 14:42:30 +0400 |
|---|---|---|
| committer | Sergey Petrunya <psergey@askmonty.org> | 2013-09-26 14:42:30 +0400 |
| commit | 0b69c44e945658e82b4c5d532694795136018f12 (patch) | |
| tree | 37e11ffbdff3a6aa55340cb7b789d529cea61387 /mysql-test/t/explain_non_select.test | |
| parent | 7d60030c0200b982c13a4c6a9023cf7190b2510a (diff) | |
| download | mariadb-git-0b69c44e945658e82b4c5d532694795136018f12.tar.gz | |
MDEV-5067: Valgrind warnings (Invalid read) in QPF_table_access::print_explain
- Query plan footprint (in new terms, "EXPLAIN structure") should always keep
a copy of key_name. This is because the table might be a temporary table which
may be already freed by the time we use query plan footprint.
Diffstat (limited to 'mysql-test/t/explain_non_select.test')
| -rw-r--r-- | mysql-test/t/explain_non_select.test | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mysql-test/t/explain_non_select.test b/mysql-test/t/explain_non_select.test index 316720b17f3..2ca47ff8025 100644 --- a/mysql-test/t/explain_non_select.test +++ b/mysql-test/t/explain_non_select.test @@ -106,4 +106,12 @@ explain replace into t1 select * from t0; drop table t0, t1; +--echo # +--echo # MDEV-5067: Valgrind warnings (Invalid read) in QPF_table_access::print_explain +--echo # +CREATE TABLE t1 (i INT) ENGINE=MyISAM; +INSERT INTO t1 VALUES (7),(0),(9); + +SELECT * FROM t1 INNER JOIN ( SELECT DISTINCT * FROM t1 ) AS sq ON (sq.i = t1.i); +DROP TABLE t1; |