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Diffstat (limited to 'mysql-test/t/explain.test')
| -rw-r--r-- | mysql-test/t/explain.test | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/mysql-test/t/explain.test b/mysql-test/t/explain.test index 04cf37f457a..c9ae8aceaf6 100644 --- a/mysql-test/t/explain.test +++ b/mysql-test/t/explain.test @@ -66,4 +66,32 @@ explain extended select * from t1 having 1; drop view v1; drop table t1; +# +# Bug #32241: memory corruption due to large index map in 'Range checked for +# each record' +# + +CREATE TABLE t1(c INT); +INSERT INTO t1 VALUES (),(); + +CREATE TABLE t2 (b INT, +KEY(b),KEY(b),KEY(b),KEY(b),KEY(b), +KEY(b),KEY(b),KEY(b),KEY(b),KEY(b), +KEY(b),KEY(b),KEY(b),KEY(b),KEY(b), +KEY(b),KEY(b),KEY(b),KEY(b),KEY(b), +KEY(b),KEY(b),KEY(b),KEY(b),KEY(b), +KEY(b),KEY(b),KEY(b),KEY(b),KEY(b), +KEY(b),KEY(b),KEY(b),KEY(b),KEY(b), +KEY(b),KEY(b),KEY(b),KEY(b),KEY(b)); + +INSERT INTO t2 VALUES (),(),(); + +# We only need to make sure that there is no buffer overrun and the index map +# is displayed correctly +--replace_column 1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X 9 X +EXPLAIN SELECT 1 FROM + (SELECT 1 FROM t2,t1 WHERE b < c GROUP BY 1 LIMIT 1) AS d2; +DROP TABLE t2; +DROP TABLE t1; + # End of 5.0 tests. |