File perl-fix2020.patch of Package perl.15357

submitted upstream

Author: Bernhard M. Wiedemann <bwiedemann suse de>
Date: 2018-03-18
Subject: fix calls of timelocal to work after 2019

because year 70 then starts to mean 2070

https://bugzilla.opensuse.org/show_bug.cgi?id=1102840 trackerbug: build fails at
 some time
https://rt.perl.org/Ticket/Display.html?id=132896 perl Net::NNTP 
https://rt.perl.org/Ticket/Display.html?id=132898 perl Net::FTP => https://rt.cp
an.org/Public/Bug/Display.html?id=124534
https://rt.perl.org/Ticket/Display.html?id=132897 perl doc

---
 cpan/Time-Local/t/Local.t |   14 ++++++--------
 cpan/libnet/Net/FTP.pm    |    2 +-
 cpan/libnet/Net/NNTP.pm   |    2 +-
 pod/perlport.pod          |    2 +-
 4 files changed, 9 insertions(+), 11 deletions(-)

--- ./cpan/Time-Local/t/Local.t
+++ ./cpan/Time-Local/t/Local.t
@@ -91,8 +91,7 @@ for (@time, @neg_time) {
 
         # Test timelocal()
         {
-            my $year_in = $year < 70 ? $year + 1900 : $year;
-            my $time = timelocal($sec,$min,$hour,$mday,$mon,$year_in);
+            my $time = timelocal($sec,$min,$hour,$mday,$mon,$year + 1900);
 
             my($s,$m,$h,$D,$M,$Y) = localtime($time);
 
@@ -107,8 +106,7 @@ for (@time, @neg_time) {
 
         # Test timegm()
         {
-            my $year_in = $year < 70 ? $year + 1900 : $year;
-            my $time = timegm($sec,$min,$hour,$mday,$mon,$year_in);
+            my $time = timegm($sec,$min,$hour,$mday,$mon,$year + 1900);
 
             my($s,$m,$h,$D,$M,$Y) = gmtime($time);
 
@@ -134,14 +132,14 @@ for (@bad_time) {
 }
 
 {
-    is(timelocal(0,0,1,1,0,90) - timelocal(0,0,0,1,0,90), 3600,
+    is(timelocal(0,0,1,1,0,1990) - timelocal(0,0,0,1,0,1990), 3600,
        'one hour difference between two calls to timelocal');
 
-    is(timelocal(1,2,3,1,0,100) - timelocal(1,2,3,31,11,99), 24 * 3600,
+    is(timelocal(1,2,3,1,0,2000) - timelocal(1,2,3,31,11,1999), 24 * 3600,
        'one day difference between two calls to timelocal');
 
     # Diff beween Jan 1, 1980 and Mar 1, 1980 = (31 + 29 = 60 days)
-    is(timegm(0,0,0, 1, 2, 80) - timegm(0,0,0, 1, 0, 80), 60 * 24 * 3600,
+    is(timegm(0,0,0, 1, 2, 1980) - timegm(0,0,0, 1, 0, 1980), 60 * 24 * 3600,
        '60 day difference between two calls to timegm');
 }
 
@@ -151,7 +149,7 @@ for (@bad_time) {
 # treated like 03:00:00 rather than 01:00:00 - negative zone offsets used
 # to do the latter
 {
-    my $hour = (localtime(timelocal(0, 0, 2, 7, 3, 102)))[2];
+    my $hour = (localtime(timelocal(0, 0, 2, 7, 3, 2002)))[2];
     # testers in US/Pacific should get 3,
     # other testers should get 2
     ok($hour == 2 || $hour == 3, 'hour should be 2 or 3');
--- ./cpan/libnet/Net/FTP.pm
+++ ./cpan/libnet/Net/FTP.pm
@@ -200,7 +200,7 @@ sub mdtm {
 
   $ftp->_MDTM($file)
     && $ftp->message =~ /((\d\d)(\d\d\d?))(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)/
-    ? timegm($8, $7, $6, $5, $4 - 1, $2 eq '19' ? $3 : ($1 - 1900))
+    ? timegm($8, $7, $6, $5, $4 - 1, $2 eq '19' ? ($3 + 1900) : $1)
     : undef;
 }
 
--- ./cpan/libnet/Net/NNTP.pm
+++ ./cpan/libnet/Net/NNTP.pm
@@ -536,7 +536,7 @@ sub date {
 
   $nntp->_DATE
     && $nntp->message =~ /(\d{4})(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)/
-    ? timegm($6, $5, $4, $3, $2 - 1, $1 - 1900)
+    ? timegm($6, $5, $4, $3, $2 - 1, $1)
     : undef;
 }
 
--- ./pod/perlport.pod
+++ ./pod/perlport.pod
@@ -635,7 +635,7 @@ When calculating specific times, such as
 it may be appropriate to calculate an offset for the epoch.
 
     require Time::Local;
-    my $offset = Time::Local::timegm(0, 0, 0, 1, 0, 70);
+    my $offset = Time::Local::timegm(0, 0, 0, 1, 0, 1970);
 
 The value for C<$offset> in Unix will be C<0>, but in Mac OS Classic
 will be some large number.  C<$offset> can then be added to a Unix time