Crash on a query with GROUP BY and user variables

Bug #1001506 reported by Igor Babaev on 2012-05-19
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
MariaDB
Fix Released
Critical
Timour Katchaounov

Bug Description

The following simple test case causes a crash of the server in MariaDB 5.2/5.3/5.5:

CREATE TABLE t1(a int);
INSERT INTO t1 VALUES (1), (2);
SELECT DISTINCT @a:=MIN(t1.a) FROM t1, t1 AS t2
GROUP BY @b:=(SELECT COUNT(*) > t2.a);
DROP TABLE t1;

(See also bug #57197 from bugs.mysql.com)

Related branches

Changed in maria:
status: New → Confirmed
importance: Undecided → Critical
assignee: nobody → Timour Katchaounov (timour)
milestone: none → 5.2
Changed in maria:
status: Confirmed → In Progress
Changed in maria:
status: In Progress → Fix Released
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