MDEV-29742 heap number overflow

A previous fix in commit efd8af53
failed to cover ALTER TABLE.

PageBulk::isSpaceAvailable(): Check for record heap number overflow.

mysql-test/suite/innodb/r/innodb-64k.result

@@ -1081,9 +1081,11 @@ COMMIT;
 drop table t2;
 DROP TABLE t1;
 #
-# MDEV-19526 heap number overflow
+# MDEV-19526/MDEV-29742 heap number overflow
 #
 CREATE TABLE t1(a SMALLINT NOT NULL UNIQUE AUTO_INCREMENT, KEY(a))
 ENGINE=InnoDB;
 INSERT INTO t1 (a) SELECT seq FROM seq_1_to_8191;
+ALTER TABLE t1 FORCE, ALGORITHM=INPLACE;
 DROP TABLE t1;
+# End of 10.3 tests

mysql-test/suite/innodb/t/innodb-64k.test

@@ -641,9 +641,12 @@ drop table t2;
 DROP TABLE t1;
 
 --echo #
---echo # MDEV-19526 heap number overflow
+--echo # MDEV-19526/MDEV-29742 heap number overflow
 --echo #
 CREATE TABLE t1(a SMALLINT NOT NULL UNIQUE AUTO_INCREMENT, KEY(a))
 ENGINE=InnoDB;
 INSERT INTO t1 (a) SELECT seq FROM seq_1_to_8191;
+ALTER TABLE t1 FORCE, ALGORITHM=INPLACE;
 DROP TABLE t1;
+
+--echo # End of 10.3 tests

storage/innobase/btr/btr0bulk.cc

 /*****************************************************************************
 
 Copyright (c) 2014, 2019, Oracle and/or its affiliates. All Rights Reserved.
-Copyright (c) 2017, 2021, MariaDB Corporation.
+Copyright (c) 2017, 2022, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -597,6 +597,11 @@ bool
 PageBulk::isSpaceAvailable(
 	ulint		rec_size)
 {
+	if (m_rec_no >= 8190) {
+		ut_ad(srv_page_size == 65536);
+		return false;
+	}
+
 	ulint	slot_size;
 	ulint	required_space;