Repair possible failure to update hint bits on disk

Under rare circumstances this oversight could lead to “could not access transaction status” failures, which qualifies it as a potential-data-loss bug.

Ensure that hashed outer join does not miss tuples

Very large left joins using a hash join plan could fail to output unmatched left-side rows given just the right data distribution.

Disallow running pg_ctl as root

This is to guard against any possible security issues.

Avoid using temp files in /tmp in make_oidjoins_check

This has been reported as a security issue, though it's hardly worthy of concern since there is no reason for non-developers to use this script anyway.

Prevent forced backend shutdown from re-emitting prior command result

In rare cases, a client might think that its last command had succeeded when it really had been aborted by forced database shutdown.

Repair bug in pg_stat_get_backend_idset

This could lead to misbehavior in some of the system-statistics views.

Fix small memory leak in postmaster

Fix “expected both swapped tables to have TOAST tables” bug

This could arise in cases such as CLUSTER after ALTER TABLE DROP COLUMN.

Prevent pg_ctl restart from adding -D multiple times

Fix problem with NULL values in GiST indexes

:: is no longer interpreted as a variable in an ECPG prepare statement