1 files changed, 34 insertions, 0 deletions
diff --git a/mysql-test/suite/innodb/t/innodb-fk.test b/mysql-test/suite/innodb/t/innodb-fk.test
index 8809dc55966..6d5307a1f84 100644
--- a/mysql-test/suite/innodb/t/innodb-fk.test
+++ b/mysql-test/suite/innodb/t/innodb-fk.test
@@ -226,3 +226,37 @@ ADD FOREIGN KEY (`b`) REFERENCES `bor#oda`(`id`);
 
 SHOW CREATE TABLE `bor#oda`;
 DROP TABLE `bor#oda`;
+
+--echo #
+--echo # MDEV-21127 Assertion `(size_t)(ptr - buf) < MAX_TEXT - 4' failed in key_text::key_text
+--echo #
+--error ER_CANT_CREATE_TABLE
+CREATE TABLE t1 (
+    a012345678901234567890123456789012345678901 char(255),
+    b char(255),
+    FOREIGN KEY ( a012345678901234567890123456789012345678901, b ) REFERENCES tx (ax, bx)
+) ENGINE=InnoDB;
+
+--error ER_CANT_CREATE_TABLE
+CREATE TABLE t1 (
+    a012345678901234567 int,
+    b int,
+    c0123456789012345678 int,
+    FOREIGN KEY (a012345678901234567,c0123456789012345678,b) REFERENCES tx (x1,x2,x3)
+) ENGINE=InnoDB;
+
+--echo #
+--echo # MDEV-25642 InnoDB rename table copy DDL fails
+--echo #	while dropping the table
+--echo #
+call mtr.add_suppression("InnoDB: In ALTER TABLE `test`.`t1` has or is referenced in foreign key constraints which are not compatible with the new table definition.");
+
+CREATE TABLE t1 (a VARCHAR(10) NOT NULL PRIMARY KEY) ENGINE=InnoDB;
+CREATE TABLE t1_fk (a VARCHAR(40), KEY a (a), FULLTEXT KEY(a), CONSTRAINT fk FOREIGN KEY(a) REFERENCES t1 (a) ON UPDATE CASCADE) ENGINE=InnoDB;
+ALTER TABLE t1 RENAME TO tm1, ALGORITHM=COPY;
+SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_FOREIGN;
+# Enable SET FOREIGN_KEY_CHECKS after fixing MDEV-25885
+SET FOREIGN_KEY_CHECKS=0;
+CREATE TABLE t1 (c1 BIGINT NOT NULL, c2 BIGINT NOT NULL, PRIMARY KEY(c1), UNIQUE KEY(c2)) ENGINE=MEMORY;
+ALTER TABLE t1 ENGINE=InnoDB, ALGORITHM=COPY;
+DROP TABLE t1, tm1, t1_fk;