time: Parse does not handle negative years

[gopherbot]

by achun.SHX:

look this:

fmt.Println(time.Parse("2006", "-0001"))

output:

0001-01-01 00:00:00 +0000 UTC parsing time "-0001" as "2006": cannot
parse "-0001"

http://play.golang.org/p/noXxxdh6hR

[robpike]

Comment 1:

Since Format prints negative years, Parse should handle them.

[robpike]

Comment 2:

There are many time values that fall outside the range that Parse can handle. It's
unfortunate but also unimportant, since they will arise only in very exceptional
circumstances.

Status changed to Unfortunate.