<sect1 id="release-9-2-24">

<title>Release 9.2.24</title>

<formalpara>

<title>Release date:</title>

<para>2017-11-09</para>

</formalpara>

<para>

This release contains a variety of fixes from 9.2.23.

For information about new features in the 9.2 major release, see

<xref linkend="release-9-2">.

</para>

<para>

This is expected to be the last <productname>PostgreSQL</productname>

release in the 9.2.X series. Users are encouraged to update to a newer

release branch soon.

</para>

<sect2>

<title>Migration to Version 9.2.24</title>

<para>

A dump/restore is not required for those running 9.2.X.

</para>

<para>

However, if you are upgrading from a version earlier than 9.2.22,

see <xref linkend="release-9-2-22">.

</para>

</sect2>

<sect2>

<title>Changes</title>

<itemizedlist>

<listitem>

<para>

Properly reject attempts to convert infinite float values to

type <type>numeric</type> (Tom Lane, KaiGai Kohei)

</para>

<para>

Previously the behavior was platform-dependent.

</para>

</listitem>

<listitem>

<para>

Fix corner-case crashes when columns have been added to the end of a

view (Tom Lane)

</para>

</listitem>

<listitem>

<para>

Record proper dependencies when a view or rule

contains <structname>FieldSelect</structname>

or <structname>FieldStore</structname> expression nodes (Tom Lane)

</para>

<para>

Lack of these dependencies could allow a column or data

type <command>DROP</command> to go through when it ought to fail,

thereby causing later uses of the view or rule to get errors.

This patch does not do anything to protect existing views/rules,

only ones created in the future.

</para>

</listitem>

<listitem>

<para>

Correctly detect hashability of range data types (Tom Lane)

</para>

<para>

The planner mistakenly assumed that any range type could be hashed

for use in hash joins or hash aggregation, but actually it must check

whether the range's subtype has hash support. This does not affect any

of the built-in range types, since they're all hashable anyway.

</para>

</listitem>

<listitem>

<para>

Fix low-probability loss of <command>NOTIFY</command> messages due to

XID wraparound (Marko Tiikkaja, Tom Lane)

</para>

<para>

If a session executed no queries, but merely listened for

notifications, for more than 2 billion transactions, it started to miss

some notifications from concurrently-committing transactions.

</para>

</listitem>

<listitem>

<para>

Prevent low-probability crash in processing of nested trigger firings

(Tom Lane)

</para>

</listitem>

<listitem>

<para>

Correctly restore the umask setting when file creation fails

in <command>COPY</command> or <function>lo_export()</function>

(Peter Eisentraut)

</para>

</listitem>

<listitem>

<para>

Give a better error message for duplicate column names

in <command>ANALYZE</command> (Nathan Bossart)

</para>

</listitem>

<listitem>

<para>

Fix <application>libpq</application> to not require user's home

directory to exist (Tom Lane)

</para>

<para>

In v10, failure to find the home directory while trying to

read <filename>~/.pgpass</filename> was treated as a hard error,

but it should just cause that file to not be found. Both v10 and

previous release branches made the same mistake when

reading <filename>~/.pg_service.conf</filename>, though this was less

obvious since that file is not sought unless a service name is

specified.

</para>

</listitem>

<listitem>

<para>

Fix <application>libpq</application> to guard against integer

overflow in the row count of a <structname>PGresult</structname>

(Michael Paquier)

</para>

</listitem>

<listitem>

<para>

Sync our copy of the timezone library with IANA release tzcode2017c

(Tom Lane)

</para>

<para>

This fixes various issues; the only one likely to be user-visible

is that the default DST rules for a POSIX-style zone name, if

no <filename>posixrules</filename> file exists in the timezone data

directory, now match current US law rather than what it was a dozen

years ago.

</para>

</listitem>

<listitem>

<para>

Update time zone data files to <application>tzdata</application>

release 2017c for DST law changes in Fiji, Namibia, Northern Cyprus,

Sudan, Tonga, and Turks &amp; Caicos Islands, plus historical

corrections for Alaska, Apia, Burma, Calcutta, Detroit, Ireland,

Namibia, and Pago Pago.

</para>

</listitem>

</itemizedlist>

</sect2>

</sect1>