database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2026-01-06 05:22:24 +03:00
Code Activity

sql_base.cc:

Browse Source 
Fixed bug #12470.
  A misplaced initialization of the cond_count counter
  resulted in a wrong calculation of it. This caused a memory
  corruption since this counter was used as a parameter of
  some memory allocation.
view.test:
  Added a test case for bug #12470.
This commit is contained in:
igor@rurik.mysql.com
2005-08-12 01:27:04 -07:00
parent 0aff8a13dc
commit da441e949c
3 changed files with 32 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
mysql-test/t/view.test
View File

@@ -1917,6 +1917,23 @@ SELECT * FROM v1;
DROP VIEW v1;
DROP TABLE t1;
#
# Test for bug #12470: crash for a simple select from a view defined
# as a join over 5 tables
CREATE TABLE t1 (pk int PRIMARY KEY, b int);
CREATE TABLE t2 (pk int PRIMARY KEY, fk int, INDEX idx(fk));
CREATE TABLE t3 (pk int PRIMARY KEY, fk int, INDEX idx(fk));
CREATE TABLE t4 (pk int PRIMARY KEY, fk int, INDEX idx(fk));
CREATE TABLE t5 (pk int PRIMARY KEY, fk int, INDEX idx(fk));
CREATE VIEW v1 AS
SELECT t1.pk as a FROM t1,t2,t3,t4,t5
WHERE t1.b IS NULL AND
t1.pk=t2.fk AND t2.pk=t3.fk AND t3.pk=t4.fk AND t4.pk=t5.fk;
SELECT a FROM v1;
DROP VIEW v1;
DROP TABLE t1,t2,t3,t4,t5;