From: Rafael Garcia-Suarez <rgarciasuarez@gmail.com>
Date: Tue, 15 Jul 2008 08:59:13 +0000 (+0000)
Subject: Upgrade to version 0.76 by John Peacock
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=219bf41872a28e4a469d4274a14dca87429a5a5e;p=p5sagit%2Fp5-mst-13.2.git

Upgrade to version 0.76 by John Peacock
Fix segfault in serialized version objects
(bug #56606)

p4raw-id: //depot/perl@34142
---

diff --git a/lib/version.pm b/lib/version.pm
index f05d20a..998180b 100644
--- a/lib/version.pm
+++ b/lib/version.pm
@@ -6,7 +6,7 @@ use strict;
 
 use vars qw(@ISA $VERSION $CLASS *qv);
 
-$VERSION = 0.74;
+$VERSION = 0.76;
 
 $CLASS = 'version';
 
diff --git a/lib/version.pod b/lib/version.pod
index dee652d..7f85ecb 100644
--- a/lib/version.pod
+++ b/lib/version.pod
@@ -22,8 +22,12 @@ version - Perl extension for Version Objects
 =head1 DESCRIPTION
 
 Overloaded version objects for all modern versions of Perl.  This module
-implements all of the features of version objects which will be part
-of Perl 5.10.0.
+implements all of the features of version objects which are part
+of Perl 5.10.0.  All previous releases (i.e. before 0.74) are deprecated
+and should not be used due to incompatible API changes.  If you 'use
+version' in your code, you are strongly urged to set a minimum, e.g. 
+
+  use version 0.74; # to remain compatible with Perl v5.10.0
 
 =head2 BEST PRACTICES
 
@@ -407,6 +411,31 @@ For example:
 See also L<UNIVERSAL::VERSION>, as this also returns the stringified form
 when used as a class method.
 
+IMPORTANT NOTE: There is one exceptional cases shown in the above table
+where the "initializer" is not stringwise equivalent to the stringified
+representation.  If you use the C<qv()> operator on a version without a
+leading 'v' B<and> with only a single decimal place, the stringified output
+will have a leading 'v', to preserve the sense.  See the L<qv()> operator
+for more details.
+
+IMPORTANT NOTE 2: Attempting to bypass the normal stringification rules by
+manually applying L<numify()> and L<normal()> will sometimes yield
+surprising results:
+
+  print version->new(version->new("v1.0")->numify)->normal; # v1.0.0
+
+The reason for this is that the L<numify()> operator will turn "v1.0"
+into the equivalent string "1.000000".  Forcing the outer version object
+to L<normal()> form will display the mathematically equivalent "v1.0.0".
+
+As the example in L<new()> shows, you can always create a copy of an
+existing version object with the same value by the very compact:
+
+  $v2 = $v1->new($v1);
+
+and be assured that both C<$v1> and C<$v2> will be completely equivalent,
+down to the same internal representation as well as stringification.
+
 =back
 
 =over 4
diff --git a/lib/version.t b/lib/version.t
index a839d5d..47989e3 100644
--- a/lib/version.t
+++ b/lib/version.t
@@ -551,7 +551,13 @@ SKIP: {
 	is $alpha2, $alpha1, "Don't fall for Data::Dumper's tricks";
     }
 
-
+    {
+	# http://rt.perl.org/rt3/Ticket/Display.html?id=56606
+	my $badv = bless { version => [1,2,3] }, "version";
+	is $badv, '1.002003', "Deal with badly serialized versions from YAML";	
+	my $badv2 = bless { qv => 1, version => [1,2,3] }, "version";
+	is $badv2, 'v1.2.3', "Deal with badly serialized versions from YAML ";	
+    }
 }
 
 1;
diff --git a/util.c b/util.c
index b59959c..18d3ed3 100644
--- a/util.c
+++ b/util.c
@@ -4814,21 +4814,28 @@ the original version contained 1 or more dots, respectively
 SV *
 Perl_vstringify(pTHX_ SV *vs)
 {
-    SV *pv;
-
     PERL_ARGS_ASSERT_VSTRINGIFY;
 
     if ( SvROK(vs) )
 	vs = SvRV(vs);
-    
+
     if ( !vverify(vs) )
 	Perl_croak(aTHX_ "Invalid version object");
 
-    pv = *hv_fetchs((HV*)vs, "original", FALSE);
-    if ( SvPOK(pv) ) 
-	return newSVsv(pv);
-    else
-	return &PL_sv_undef;
+    if (hv_exists((HV*)vs, "original",  sizeof("original") - 1)) {
+	SV *pv;
+	pv = *hv_fetchs((HV*)vs, "original", FALSE);
+	if ( SvPOK(pv) )
+	    return newSVsv(pv);
+	else
+	    return &PL_sv_undef;
+    }
+    else {
+	if ( hv_exists((HV *)vs, "qv", 2) )
+	    return vnormal(vs);
+	else
+	    return vnumify(vs);
+    }
 }
 
 /*