Bug 16207

Summary:	y2k problem in troff (e.g. 'man hosts.equiv')
Product:	Base System	Reporter:	emon <emon>
Component:	bin	Assignee:	Jeroen Ruigrok van der Werven <asmodai>
Status:	Closed FIXED
Severity:	Affects Only Me
Priority:	Normal
Version:	3.3-RELEASE
Hardware:	Any
OS:	Any

Description emon 2000-01-19 16:07:33 UTC

>Number:         16207
>Category:       bin
>Synopsis:       y2k problem in troff (e.g. 'man hosts.equiv')
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jan 19 08:10:01 PST 2000
>Closed-Date:
>Last-Modified:
>Originator:     KOMURA Takaaki
>Release:        3.3-RELEASE
>Organization:
Kyoto University (student)
>Environment:
FreeBSD beat.kuis.kyoto-u.ac.jp 3.3-RELEASE FreeBSD 3.3-RELEASE #0: Thu Sep 16 23:40:35 GMT 1999     jkh@highwing.cdrom.com:/usr/src/sys/compile/GENERIC  i386
>Description:
When I invoked 'man host.equiv' at January 20 2000,
I found following in the man page:
----
FreeBSD                        January 20, 1900                              1
----
>How-To-Repeat:
# rm /usr/share/man/cat5/hosts.equiv
% man hosts.equiv

The following may be printed on the last of man page:
----
FreeBSD                        January 20, 1900                              1
----
>Fix:
/usr/src/contrib/groff/troff/input.cc, line 5546

-  set_number_reg("yr", int(tt->tm_year)%100);
+  set_number_reg("yr", int(tt->tm_year));


>Release-Note:
>Audit-Trail:
>Unformatted:


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Comment 1 emon 2000-01-19 16:10:01 UTC

When I invoked 'man host.equiv' at January 20 2000,
I found following in the man page:
----
FreeBSD                        January 20, 1900                              1
----

Fix: 

/usr/src/contrib/groff/troff/input.cc, line 5546

-  set_number_reg("yr", int(tt->tm_year)%100);
+  set_number_reg("yr", int(tt->tm_year));
How-To-Repeat: # rm /usr/share/man/cat5/hosts.equiv
% man hosts.equiv

The following may be printed on the last of man page:
----
FreeBSD                        January 20, 1900                              1
----

Comment 2 Bill Fenner 2000-01-21 01:46:10 UTC

Also see PRs gnu/4930, gnu/8321, bin/9502, and the *roff documentation
(which documents that yr is the last 2 digits of the year), and groff
v1.15 (which keeps it years since 1900 and adds Y2K fixes to the mandoc
and me macros based upon this.  ms didn't need fixing and orig_me
(from /usr/src/share/me) is not part of groff but also expects yr to be
years-since-1900).

\(yr holding "the last 2 digits of the year" is broken as designed,
since then there is no way for *roff macros to know the century.
The fix for bin/9502 made FreeBSD incompatible with everything else;
I think it should be reverted.

  Bill

Comment 3 Jeroen Ruigrok van der Werven freebsd_committer

2000-01-30 20:54:04 UTC

Responsible Changed
From-To: freebsd-bugs->asmodai

I am working on this.

Comment 4 Jeroen Ruigrok van der Werven freebsd_committer

2000-03-27 20:53:36 UTC

State Changed
From-To: open->closed

This was fixed a while ago.