Re: lib/49180: date -r cuts off a few seconds early

[David Holland <dholland-bugs%netbsd.org@localhost>]

The following reply was made to PR lib/49180; it has been noted by GNATS.

From: David Holland <dholland-bugs%netbsd.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: lib/49180: date -r cuts off a few seconds early
Date: Thu, 11 Sep 2014 19:01:12 +0000

 On Sun, Sep 07, 2014 at 12:05:01PM +0000, martin%NetBSD.org@localhost wrote:
  > Trying to print out the UTC date of the last seconds representable with
  > our 64 bit signed time_t fails.
  > 
  > >How-To-Repeat:
  > Try: date -u -r 922337206854775806
  > and watch: date: 922337206854775806: localtime: Value too large to be 
stored in data type
  > (which is incorrect, it is: 0x7ffffffffffffffe)
  > 
  > Strangely a simple C program doing the same strtoll() call seems to work
  > fine for me.
 
 That's because when it says "localtime:" it isn't just blowing smoke.
 It's not strtoll that's failing.
 
 Searching to find the last value that works shows the problem:
 
 valkyrie% date -u -r 67767976233532799
 Tue Dec 31 23:59:59 UTC 2147483647
                         ^^^^^^^^^^
 
 -- 
 David A. Holland
 dholland%netbsd.org@localhost