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-rw-r--r--mysql-test/suite/innodb/r/foreign-keys.result16
-rw-r--r--mysql-test/suite/innodb/t/foreign-keys.test19
2 files changed, 35 insertions, 0 deletions
diff --git a/mysql-test/suite/innodb/r/foreign-keys.result b/mysql-test/suite/innodb/r/foreign-keys.result
index 5cbbb5298de..05e68b0c3db 100644
--- a/mysql-test/suite/innodb/r/foreign-keys.result
+++ b/mysql-test/suite/innodb/r/foreign-keys.result
@@ -220,3 +220,19 @@ drop table t1,t2;
ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails
drop table t1,t2;
ERROR 42S02: Unknown table 'test.t2'
+#
+# MDEV-23470 InnoDB: Failing assertion: cmp < 0 in
+# row_ins_check_foreign_constraint
+#
+CREATE TABLE t1(f1 INT NOT NULL PRIMARY KEY, f2 INT NOT NULL)ENGINE=InnoDB;
+CREATE TABLE t2(f1 VARCHAR(100), f2 INT NOT NULL,
+INDEX(f2))ENGINE=InnoDB;
+INSERT INTO t1 VALUES(99, 2);
+ALTER TABLE t2 ADD FOREIGN KEY(f2) REFERENCES t1(f1);
+SET FOREIGN_KEY_CHECKS=0;
+DROP INDEX f2 ON t2;
+SET FOREIGN_KEY_CHECKS=1;
+INSERT INTO t2 VALUES('G', 3);
+ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`f2`) REFERENCES `t1` (`f1`))
+DROP TABLE t2, t1;
+SET FOREIGN_KEY_CHECKS=DEFAULT;
diff --git a/mysql-test/suite/innodb/t/foreign-keys.test b/mysql-test/suite/innodb/t/foreign-keys.test
index 58a71d11a6a..53fbe8d00dc 100644
--- a/mysql-test/suite/innodb/t/foreign-keys.test
+++ b/mysql-test/suite/innodb/t/foreign-keys.test
@@ -250,3 +250,22 @@ show create table t2;
drop table t1,t2;
--error ER_BAD_TABLE_ERROR
drop table t1,t2;
+
+--echo #
+--echo # MDEV-23470 InnoDB: Failing assertion: cmp < 0 in
+--echo # row_ins_check_foreign_constraint
+--echo #
+CREATE TABLE t1(f1 INT NOT NULL PRIMARY KEY, f2 INT NOT NULL)ENGINE=InnoDB;
+CREATE TABLE t2(f1 VARCHAR(100), f2 INT NOT NULL,
+ INDEX(f2))ENGINE=InnoDB;
+
+INSERT INTO t1 VALUES(99, 2);
+ALTER TABLE t2 ADD FOREIGN KEY(f2) REFERENCES t1(f1);
+
+SET FOREIGN_KEY_CHECKS=0;
+DROP INDEX f2 ON t2;
+SET FOREIGN_KEY_CHECKS=1;
+--error ER_NO_REFERENCED_ROW_2
+INSERT INTO t2 VALUES('G', 3);
+DROP TABLE t2, t1;
+SET FOREIGN_KEY_CHECKS=DEFAULT;