collector's time is wrong.(year 2038 problem)

Dear PostgreSQL Developers.

This problem occurs at ver. 9.3 or later.

Test environment

Windows 7 Ultimate (64bit)

Language:Japanese

PostgreSQL 9.3.6 and 9.6.1

Windows 8 Embedded (64bit).

Language:English

PostgreSQL 9.3.5

Steps

1.     Change current time. (e.g. Sep. 1st 2040)

2.     Start PostgreSQL Service.

If someone change the current time after than January 9th 2038.

pgstat_recv_inquiry() method was wrong behavior, because GetCurrentTimestamp() returned wrong timestamp.

Could you see following logs.(Winows7 x64 PostgreSQL ver.9.6.1)

2040-11-01 14:32:29 JST LOG:  database system was shut down at 2016-11-01 14:29:15 JST

2040-11-01 14:32:29 JST LOG:  MultiXact member wraparound protections are now enabled

2040-11-01 14:32:29 JST LOG:  database system is ready to accept connections

2040-11-01 14:32:29 JST LOG:  autovacuum launcher started

2040-11-01 14:32:29 JST LOG:  stats_timestamp 2016-11-01 14:29:15.049209+09 is later than collector's time 1904-09-26 08:04:13.934251+09 for database 0

2040-11-01 14:33:30 JST LOG:  stats collector's time 2016-11-01 14:29:15.049209+09 is later than backend local time 1904-09-26 08:05:14.025556+09

2040-11-01 14:33:30 JST LOG:  stats_timestamp 2016-11-01 14:29:15.049209+09 is later than collector's time 1904-09-26 08:05:14.025556+09 for database 12401

And I don't know whether this causes, but the state of the PostgreSQL service in the Service Manager won't be "starting".

Could you investigating these problem.

best regards.

/*------------------------------------------------

Kazuki Ishihara

Mail: Kazuki.Ishihara@keisetsu.jp

------------------------------------------------*/