Bug 1021161

Summary:	Perl mktime() still not Y2K38 compatible (even it should be)?
Product:	[Fedora] Fedora	Reporter:	Robert Scheck <redhat-bugzilla>
Component:	perl	Assignee:	Jitka Plesnikova <jplesnik>
Status:	CLOSED NOTABUG	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	18	CC:	cweyl, iarnell, jplesnik, kasal, perl-devel, ppisar, psabata, rc040203, tcallawa
Target Milestone:	---
Target Release:	---
Hardware:	i686
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-12-21 21:23:17 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1000912

Description Robert Scheck 2013-10-20 01:45:38 UTC

Description of problem:
According to http://search.cpan.org/~jesse/perl-5.12.0/pod/perl5120delta.pod,
Perl 5.12 (and later) should be Y2K38 compatible. However POSIX::mktime() for 
2040 is still returning undef. I am wondering about "Sizeof time_t = 4" in the
build log for i686 as well, shouldn't that be 8 when using -Duse64bitint and/
or -Duselongdouble? Or am I on the wrong path?

Version-Release number of selected component (if applicable):
perl-5.16.3-244.fc18

How reproducible:
Run the following on a 32 bit system:
perl -e 'use POSIX; print mktime(0, 0, 0, 1, 0, 140, 0, 0) . "\n"'

Actual results:
Perl mktime() still not Y2K38 compatible (even it should be)?

Expected results:
2208985200 :)

Comment 1 Petr Pisar 2013-10-21 07:50:00 UTC

Isn't time_t always 32-bit on 32-bit x86 architecture? This is what you get from kernel and glibc.

The -Duse64bitint is just to define perl's internal integer type to occupy 64-bits (i.e. typedef IV long). See config.h and perl.h:

#if defined(USE_64_BIT_INT) && defined(HAS_QUAD)
#  if QUADKIND == QUAD_IS_INT64_T && defined(INT64_MAX)
#    define IV_MAX INT64_MAX
[...]
#  else
#    define IV_MAX PERL_QUAD_MAX
[...]
#  endif
#  define IV_IS_QUAD
#  define UV_IS_QUAD
#else
#  if defined(INT32_MAX) && IVSIZE == 4
#    define IV_MAX INT32_MAX
[...]
#  else
#    define IV_MAX PERL_LONG_MAX
[...]
#  endif
#endif

Comment 2 Fedora End Of Life 2013-12-21 14:41:37 UTC

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