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Fixed bug #55421 - Protocol::end_statement(): Assertion `0' on

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multi-table UPDATE IGNORE.
The problem was that if there was an active SELECT statement
during trigger execution, an error risen during the execution
may cause a crash. The fix is to temporary reset LEX::current_select
before trigger execution and restore it afterwards. This way
errors risen during the trigger execution are processed as
if there was no active SELECT.
This commit is contained in:
Dmitry Shulga
2010-09-07 15:53:46 +07:00
parent 3d5b9792e6
commit 70807d1473
3 changed files with 78 additions and 0 deletions
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21
mysql-test/r/trigger_notembedded.result
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@ -474,4 +474,25 @@ SHOW CREATE TRIGGER db1.trg;
ERROR 42000: Access denied; you need the TRIGGER privilege for this operation
DROP USER 'no_rights'@'localhost';
DROP DATABASE db1;
DROP DATABASE IF EXISTS mysqltest_db1;
CREATE DATABASE mysqltest_db1;
USE mysqltest_db1;
GRANT ALL ON mysqltest_db1.* TO mysqltest_u1@localhost;
CREATE TABLE t1 (
a1 int,
a2 int
);
INSERT INTO t1 VALUES (1, 20);
CREATE TRIGGER mysqltest_db1.upd_t1
BEFORE UPDATE ON t1 FOR EACH ROW SET new.a2 = 200;
CREATE TABLE t2 (
a1 int
);
INSERT INTO t2 VALUES (2);
REVOKE ALL PRIVILEGES, GRANT OPTION FROM mysqltest_u1@localhost;
UPDATE IGNORE t1, t2 SET t1.a1 = 2, t2.a1 = 3 WHERE t1.a1 = 1 AND t2.a1 = 2;
ERROR 42000: TRIGGER command denied to user 'mysqltest_u1'@'localhost' for table 't1'
DROP DATABASE mysqltest_db1;
DROP USER mysqltest_u1@localhost;
USE test;
End of 5.1 tests.