database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

Bug #34747: crash in debug assertion check after derived table

Browse Source 
Was a double-free of the Unique member of Item_func_group_concat.
This was not causing a crash because the Unique is a descendent of
Sql_alloc.
Fixed to free the Unique only if it was allocated for the instance 
of Item_func_group_concat it was referenced from
This commit is contained in:
gkodinov/kgeorge@magare.gmz
2008-02-28 13:31:19 +02:00
parent bf848358e5
commit 0443189d89
3 changed files with 33 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
mysql-test/r/func_gconcat.result
View File

@ -931,4 +931,19 @@ SELECT GROUP_CONCAT(DISTINCT b, a ORDER BY b) FROM t1;
GROUP_CONCAT(DISTINCT b, a ORDER BY b)
11,22,32
DROP TABLE t1, t2, t3;
CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES (),();
SELECT s1.d1 FROM
(
SELECT
t1.a as d1,
GROUP_CONCAT(DISTINCT t1.a) AS d2
FROM
t1 AS t1,
t1 AS t2
GROUP BY 1
) AS s1;
d1
NULL
DROP TABLE t1;
End of 5.0 tests