NetBSD Problem Report #7493

Received: (qmail 23086 invoked from network); 29 Apr 1999 03:07:54 -0000
Message-Id: <199904290313.XAA20270@duhnet.net>
Date: Wed, 28 Apr 1999 23:13:13 -0400 (EDT)
From: tv@pobox.com
Reply-To: tv@pobox.com
To: gnats-bugs@gnats.netbsd.org
Subject: strptime(3) does not implement %U and %W
X-Send-Pr-Version: 3.95

>Number:         7493
>Category:       lib
>Synopsis:       strptime(3) does not implement %U and %W
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    lib-bug-people
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 28 20:20:00 +0000 1999
>Closed-Date:    Sat Aug 12 03:33:09 +0000 2017
>Last-Modified:  Sat Aug 12 03:33:09 +0000 2017
>Originator:     Todd Vierling
>Release:        1.4
>Organization:
	DuhNet: Pointing out the obvious since 1994.

>Environment:

>Description:

The %U and %W qualifiers for strptime(3) aren't implemented.  The UNIX 98
spec is vague on what happens on the borderline weeks, so we probably need
to survey other OS behavior.

>How-To-Repeat:

>Fix:

This PR is here mainly to remind myself to address this at a later date.  
But if someone wants to do the grunt work, be my guest.  :)
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback 
State-Changed-By: mycroft 
State-Changed-When: Tue Jul 6 20:01:44 UTC 2004 
State-Changed-Why:  
AFAICT, this was implemented in 1997. 


Responsible-Changed-From-To: lib-bug-people->mycroft 
Responsible-Changed-By: mycroft 
Responsible-Changed-When: Tue Jul 6 20:01:44 UTC 2004 
Responsible-Changed-Why:  
. 
State-Changed-From-To: feedback->open 
State-Changed-By: tv 
State-Changed-When: Fri Aug 20 13:57:30 UTC 2004 
State-Changed-Why:  
No, it's still not implemented.  From src/lib/libc/strptime.c rev 1.22: 

case 'U':       /* The week of year, beginning on sunday. */ 
case 'W':       /* The week of year, beginning on monday. */ 
LEGAL_ALT(ALT_O); 
/* 
* XXX This is bogus, as we can not assume any valid 
* information present in the tm structure at this 
* point to calculate a real value, so just check the 
* range for now. 
*/ 
if (!(conv_num(&bp, &i, 0, 53))) 
return (0); 
break; 

From: "Charles M. Hannum" <mycroft@netbsd.org>
To: gnats-bugs@gnats.netbsd.org
Cc: tv@pobox.com, tv@NetBSD.org
Subject: Re: lib/7493
Date: Fri, 20 Aug 2004 14:21:25 +0000

 On Friday 20 August 2004 13:58, tv@NetBSD.org wrote:
 > Synopsis: strptime(3) does not implement %U and %W
 >
 > State-Changed-From-To: feedback->open
 > State-Changed-By: tv
 > State-Changed-When: Fri Aug 20 13:57:30 UTC 2004
 > State-Changed-Why:
 > No, it's still not implemented.  From src/lib/libc/strptime.c rev 1.22:

 Uh, it sure seems to me that it outputs a valid week number, e.g. when used 
 via date(1).  It just doesn't range-check carefully.

From: Todd Vierling <tv@duh.org>
To: "Charles M. Hannum" <mycroft@netbsd.org>
Cc: gnats-bugs@gnats.netbsd.org
Subject: Re: lib/7493
Date: Fri, 20 Aug 2004 10:34:45 -0400 (EDT)

 On Fri, 20 Aug 2004, Charles M. Hannum wrote:

 > > State-Changed-From-To: feedback->open
 > > State-Changed-By: tv
 > > State-Changed-When: Fri Aug 20 13:57:30 UTC 2004
 > > State-Changed-Why:
 > > No, it's still not implemented.  From src/lib/libc/strptime.c rev 1.22:
 >
 > Uh, it sure seems to me that it outputs a valid week number, e.g. when used
 > via date(1).  It just doesn't range-check carefully.

 strftime(3) != strptime(3).

 -- 
 -- Todd Vierling <tv@duh.org> <tv@pobox.com>
Responsible-Changed-From-To: mycroft->lib-bug-people
Responsible-Changed-By: wiz@netbsd.org
Responsible-Changed-When: Sun, 03 Sep 2006 01:17:18 +0000
Responsible-Changed-Why:
Back to role account, mycroft doesn't have commit access any longer.


State-Changed-From-To: open->closed
State-Changed-By: christos@NetBSD.org
State-Changed-When: Fri, 19 Dec 2008 14:58:13 -0500
State-Changed-Why:
fixed a long time ago


State-Changed-From-To: closed->open
State-Changed-By: dholland@NetBSD.org
State-Changed-When: Sat, 14 Feb 2009 20:59:23 +0000
State-Changed-Why:
The code cited by tv@ in 2004 is still there, and as far as I can tell the
comment that says it doesn't work is still valid.

(sigh)


State-Changed-From-To: open->closed
State-Changed-By: ginsbach@NetBSD.org
State-Changed-When: Sat, 12 Aug 2017 03:33:09 +0000
State-Changed-Why:
Changes committed by ginsbach in 2015 make %U and %W work.


>Unformatted:

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