BUG #8702: psql \df+ translate_columns[] overflow and unexpected gettext translation

The following bug has been logged on the website:

Bug reference:      8702
Logged by:          Sergey Burladyan
Email address:      eshkinkot@gmail.com
PostgreSQL version: 9.3.1
Operating system:   Debian testing
Description:

I get this result from \df+ foo:
--- echo $LANG
--- ru_RU.UTF-8
---
--- create function foo() returns void language plpgsql as $$ begin end $$;


Список функций
-[ RECORD 1

]----------+---------------------------------------------------------------------------------------------------------------------
Схема                  | public
Имя                    | foo
Тип данных результата  | void
Типы данных аргументов |
Тип                    | обычная
Безопасность           | вызывающего
Изменчивость           | volatile
Владелец               | seb
Язык                   | plpgsql
Исходный код           |  begin end
Описание               | Project-Id-Version: PostgreSQL 9 current
                       | Report-Msgid-Bugs-To: pgsql-bugs@postgresql.org
                       | POT-Creation-Date: 2013-05-20 02:16+0000
                       | PO-Revision-Date: 2013-05-20 20:02+0400
                       | Last-Translator: Alexander Lakhin
<exclusion@gmail.com>
                       | Language-Team: Russian
<pgtranslation-translators@pgfoundry.org>
                       | Language: ru
                       | MIME-Version: 1.0
                       | Content-Type: text/plain; charset=UTF-8
                       | Content-Transfer-Encoding: 8bit
                       | X-Poedit-Language: Russian
                       | X-Poedit-Country: RUSSIAN FEDERATION
                       | X-Generator: Lokalize 1.5
                       | Plural-Forms: nplurals=3; plural=(n%10==1 &&
n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);
                       |


looks like "Description" field contains header from ru.mo messages file.


src/bin/psql/describe.c:describeFunctions translate_columns[] array size
is less than the maximum number of columns in query and it overflowed in
src/bin/psql/print.c:printQuery at
...
            translate = (opt->translate_columns &&
opt->translate_columns[c]);
...
so in my case opt->translate_columns[10] have garbage == true and
"Description" field
content translated unexpectedly.