Re^2: How to format dates prior to 1970?

Thanks for the response. But that is bizarre. I get a Windows pop-up that says

Perl interpreter has stopped working

A problem caused the program to stop working correctly. Windows will c
+lose the program and notify you if a solution is available.
[download]

What system are you running the code on? If I click "Debug" and open this with Microsoft Visual Studio, I get

Unhandled exception at 0x000000006F4C230B (Piece.xs.dll) in perl.exe: 
+0xC0000005: Access violation reading location 0x0000000000000000.

If there is a handler for this exception, the program may be safely co
+ntinued.
[download]

Comment on Re^2: How to format dates prior to 1970? Select or Download Code

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Re^3: How to format dates prior to 1970? by ww (Archbishop) on Jul 10, 2017 at 14:14 UTC
Just FWIW: problem occurs with with AS 5.24 on Win 7-64: C:\>perl -v * This is perl 5, version 24, subversion 0 (v5.24.0) built for MSWin32-x86-multi-thread-64int on Win 7 pro, 64bit `#!/usr/bin/perl use v5.10; # (OP's code, verbatim) use strict; use warnings; use Data::Dumper; use DateTime::Format::Strptime; use Time::Piece; $Data::Dumper::Sortkeys = 1; my $date = '05/10/1969'; my $ymd = '%Y-%m-%d'; my $mdy = '%m/%d/%Y'; my $t = Time::Piece->strptime($date,$mdy); say $t->ymd; # Prints as normal say $t->strftime($ymd); # Segmentation fault` [download] Execution: C:\>F:\_Perl_\PMonks\1194689.pl 1969-05-10 C:\> And, the same popup as cited above with the following content: Problem signature: Problem Event Name: APPCRASH Application Name: perl.exe Application Version: 5.24.0.2400 Application Timestamp: 578689b9 Fault Module Name: Piece.dll Fault Module Version: 0.0.0.0 Fault Module Timestamp: 57868a01 Exception Code: c0000005 Exception Offset: 00002398 OS Version: 6.1.7601.2.1.0.256.48 Locale ID: 1033 Additional Information 1: 0a9e Additional Information 2: 0a9e372d3b4ad19135b953a78882e789 Additional Information 3: 0a9e Additional Information 4: 0a9e372d3b4ad19135b953a78882e789 [download] Spirit of the Monastery	[reply] [d/l] [select]
Re^4: How to format dates prior to 1970? by Hanfresco (Novice) on Jul 10, 2017 at 15:57 UTC
What version of Time::Piece are you using?	[reply]
Re^5: How to format dates prior to 1970? by ww (Archbishop) on Jul 10, 2017 at 23:10 UTC
`C:>perl -MDateTime::Format::Strptime -wE "say $DateTime::Format::Strpt +ime::VERSION;" 1.73` [download] Spirit of the Monastery	[reply] [d/l]
Re^3: How to format dates prior to 1970? by 1nickt (Canon) on Jul 10, 2017 at 13:52 UTC
Well, since the exception is apparently caused by `Time::Piece` (even though it's a core module), try using something else: `use strict; use warnings; use feature 'say'; use DateTime::Format::Strptime; my $parser = DateTime::Format::Strptime->new(pattern => '%m/%d/%Y', on +_error => 'croak'); my $date = '05/10/1969'; my $dt = $parser->parse_datetime( $date ); say $dt->ymd;` [download] What does that do on your Windows system? The way forward always starts with a minimal test.	[reply] [d/l] [select]
Re^4: How to format dates prior to 1970? by Hanfresco (Novice) on Jul 10, 2017 at 16:11 UTC
`#!/usr/bin/perl use v5.10; use strict; use warnings; use Data::Dumper; use DateTime::Format::Strptime; $Data::Dumper::Sortkeys = 1; my $parser = DateTime::Format::Strptime->new(pattern => '%m/%d/%Y', on +_error => 'croak'); my $date = '05/10/1969'; my $dt = $parser->parse_datetime($date); say $dt->ymd; say $dt->strftime('%Y-%m-%d');` [download] Interesting! This seems to work even with strftime; no seg faults!	[reply] [d/l]
Re^5: How to format dates prior to 1970? by ikegami (Patriarch) on Jul 10, 2017 at 16:24 UTC
DateTime isn't based around epoch times, so it will indeed work with older-than-epoch times without problem.	[reply]