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MDEV-23685 SIGSEGV on ADD FOREIGN KEY after failed ADD KEY

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dict_foreign_qualify_index(): Reject corrupted or garbage indexes.
For index stubs that are created on virtual columns, no
dict_field_t::col would be assign. Instead, the entire table
definition would be reloaded on a successful operation.
This commit is contained in:
Marko Mäkelä
2020-09-09 12:04:42 +03:00
parent c26eae0cc0
commit 64c8fa58a8
3 changed files with 29 additions and 1 deletions
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11
mysql-test/suite/innodb/r/foreign_key.result
View File

@ -740,4 +740,15 @@ t2 CREATE TABLE `t2` (
CREATE TABLE t2 (f1 INT NOT NULL)ENGINE=InnoDB;
ERROR 42S01: Table 't2' already exists
DROP TABLE t2, t1;
#
# MDEV-23685 SIGSEGV on ADD FOREIGN KEY after failed attempt
# to create unique key on virtual column
#
CREATE TABLE t1 (pk INT PRIMARY KEY, a INT, b INT AS (a)) ENGINE=InnODB;
INSERT INTO t1 (pk,a) VALUES (1,10),(2,10);
ALTER TABLE t1 ADD UNIQUE INDEX ind9 (b), LOCK=SHARED;
ERROR 23000: Duplicate entry '10' for key 'ind9'
SET FOREIGN_KEY_CHECKS= 0;
ALTER TABLE t1 ADD FOREIGN KEY (a) REFERENCES t1 (pk);
DROP TABLE t1;
# End of 10.2 tests

13
mysql-test/suite/innodb/t/foreign_key.test
View File

@ -720,6 +720,19 @@ SHOW CREATE TABLE t2;
CREATE TABLE t2 (f1 INT NOT NULL)ENGINE=InnoDB;
DROP TABLE t2, t1;
--echo #
--echo # MDEV-23685 SIGSEGV on ADD FOREIGN KEY after failed attempt
--echo # to create unique key on virtual column
--echo #
CREATE TABLE t1 (pk INT PRIMARY KEY, a INT, b INT AS (a)) ENGINE=InnODB;
INSERT INTO t1 (pk,a) VALUES (1,10),(2,10);
--error ER_DUP_ENTRY
ALTER TABLE t1 ADD UNIQUE INDEX ind9 (b), LOCK=SHARED;
SET FOREIGN_KEY_CHECKS= 0;
ALTER TABLE t1 ADD FOREIGN KEY (a) REFERENCES t1 (pk);
DROP TABLE t1;
--echo # End of 10.2 tests
--source include/wait_until_count_sessions.inc