Broken fast index creation

Upstream bug 54330 was not fixed in 5.5 (that 5.5 claims to have it fixed is upstream bug 64432).

CREATE TABLE t1 (
       id BIGINT(20) AUTO_INCREMENT PRIMARY KEY,
       bar BIGINT(20)
) ENGINE=InnoDB;

--disable_query_log
SET @old_autocommit=@@AUTOCOMMIT;
SET AUTOCOMMIT=0;
let $1= 515641;
while ($1)
{
  eval INSERT INTO t1 (bar) VALUES (NULL);
  dec $1;
}
let $1= 2031;
while ($1)
{
  eval INSERT INTO t1 (bar) VALUES ($1);
  dec $1;
}
COMMIT;
SET AUTOCOMMIT=@old_autocommit;
--enable_query_log

SELECT COUNT(*) FROM t1;

ALTER TABLE t1 ADD INDEX baz (bar);

# With the bug present this will differ from the SELECT above!
SELECT COUNT(*) FROM t1 FORCE INDEX (baz);