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Bug#961443: buster-pu: package perl/5.28.2



Control: retitle -1 buster-pu: package perl/5.28.3

On Sun, May 24, 2020 at 04:58:31PM +0100, Dominic Hargreaves wrote:
> The perl interpreter team would like to move to a model where we
> attempt to keep Debian stable releases more or less in sync with
> upstream maint branches - which are conservatively maintained along the
> lines of the policies here, which match pretty well with Debian's:
> 
> https://perldoc.perl.org/5.30.0/perlpolicy.html#MAINTENANCE-BRANCHES
> 
> In the past we have done a more or less complete import of new
> upstream releases (excluding patches which do not affect Debian) whilst
> keeping the previous version number intact[1]. This was done out of
> an abundance of caution (not knowing the risks of the upstream version
> number changing in stable) but, after a few more years of relatively
> pain free transitions in unstable, we think that the cost/risk of the
> manual cherry-picking procedure, together with the lack of transparency
> to users about which version they are running, outweighs the potential
> benefits of keeping the upstream version unchanged.
> 
> Therefore, we propose to apply the 5.28.2 release to buster at the next
> opportunity (is the next stable update scheduled?)
> 
> A tentative branch is at [2], and an abbreviated patch (excluding
> churn caused by version numbers and developer documentation) and
> separately, the upstream changelog, is attached.
> 
> One complicating factor would be the need to binnmu four packages
> that are sensitive to the upstream version number as part of the
> stable update, as we routinely do for updates in unstable. Beyond that,
> we don't anticipate any major issues. We would do a complete test
> rebuild of perl-related packages in advance to catch any other
> issues (an learning point from the update in [1]).
> 
> Thanks for your consideration.
> 
> [1] <https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=822336>
> [2] <https://salsa.debian.org/perl-team/interpreter/perl/-/tree/dom/buster-5.28.2>

Further to the above, we now have a no-dsa security issue to push out
to buster (and stretch, but we prefer a more traditional approach there
because of the relative size of changes and age of the release).

The security issues in question are tracked at #962005.

I attach the additional diff between 5.28.2 and 5.28.3 (which was
purely a security release) - again, excluding doc and version churn.

Please do let me know if you would be okay with this approach, and
we can get the ball rolling.
diff -urN perl-5.28.2/dist/Module-CoreList/Changes perl-5.28.3/dist/Module-CoreList/Changes
--- perl-5.28.2/dist/Module-CoreList/Changes	2019-03-28 22:14:50.000000000 +0000
+++ perl-5.28.3/dist/Module-CoreList/Changes	2020-05-14 16:50:06.000000000 +0100
@@ -1,3 +1,54 @@
+5.20200601_28
+  - Updated for v5.28.3
+
+5.20200428
+  - Updated for v5.31.11
+
+5.20200320
+  - Updated for v5.31.10
+
+5.20200314
+  - Updated for v5.30.2
+
+5.20200220
+  - Updated for v5.31.9
+
+5.20200120
+  - Updated for v5.31.8
+
+5.20191220
+  - Updated for v5.31.7
+
+5.20191120
+  - Updated for v5.31.6
+
+5.20191110
+  - Updated for v5.30.1
+
+5.20191020
+  - Updated for v5.31.5
+
+5.20190920
+  - Updated for v5.31.4
+
+5.20190820
+  - Updated for v5.31.3
+
+5.20190720
+  - Updated for v5.31.2
+
+5.20190620
+  - Updated for v5.31.1
+
+5.20190524
+  - Updated for v5.31.0
+
+5.20190522
+  - Updated for v5.30.0
+
+5.20190420
+  - Updated for v5.29.10
+
 5.20190419
   - Updated for v5.28.2
 
diff -urN perl-5.28.2/dist/Module-CoreList/lib/Module/CoreList/Utils.pm perl-5.28.3/dist/Module-CoreList/lib/Module/CoreList/Utils.pm
--- perl-5.28.2/dist/Module-CoreList/lib/Module/CoreList/Utils.pm	2019-04-04 21:14:49.000000000 +0100
+++ perl-5.28.3/dist/Module-CoreList/lib/Module/CoreList/Utils.pm	2020-05-14 17:01:48.000000000 +0100
@@ -4,7 +4,7 @@
 use warnings;
 use Module::CoreList;
 
-our $VERSION = '5.20190419';
+our $VERSION = '5.20200601_28';
 our %utilities;
 
 sub utilities {
@@ -1485,6 +1485,127 @@
         changed => {
         },
         removed => {
+        }
+    },
+    5.029010 => {
+        delta_from => 5.029009,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.030000 => {
+        delta_from => 5.029010,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031000 => {
+        delta_from => 5.03,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031001 => {
+        delta_from => 5.031,
+        changed => {
+        },
+        removed => {
+            'podselect'             => 1,
+        }
+    },
+    5.031002 => {
+        delta_from => 5.031001,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031003 => {
+        delta_from => 5.031002,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031004 => {
+        delta_from => 5.031003,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031005 => {
+        delta_from => 5.031004,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.030001 => {
+        delta_from => 5.03,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031006 => {
+        delta_from => 5.031005,
+        changed => {
+            'streamzip'             => '1',
+        },
+        removed => {
+        }
+    },
+    5.031007 => {
+        delta_from => 5.031006,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031008 => {
+        delta_from => 5.031007,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031009 => {
+        delta_from => 5.031008,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.030002 => {
+        delta_from => 5.030001,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031010 => {
+        delta_from => 5.031009,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031011 => {
+        delta_from => 5.031010,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.028003 => {
+        delta_from => 5.028002,
+        changed => {
+        },
+        removed => {
         }
     },
 );
diff -urN perl-5.28.2/dist/Module-CoreList/lib/Module/CoreList.pm perl-5.28.3/dist/Module-CoreList/lib/Module/CoreList.pm
--- perl-5.28.2/dist/Module-CoreList/lib/Module/CoreList.pm	2019-04-04 21:14:49.000000000 +0100
+++ perl-5.28.3/dist/Module-CoreList/lib/Module/CoreList.pm	2020-05-14 17:02:22.000000000 +0100
@@ -4,7 +4,7 @@
 our ( %released, %version, %families, %upstream, %bug_tracker, %deprecated, %delta );
 
 use version;
-our $VERSION = '5.20190419';
+our $VERSION = '5.20200601_28';
 
 sub PKG_PATTERN () { q#\A[a-zA-Z_][0-9a-zA-Z_]*(?:(::|')[0-9a-zA-Z_]+)*\z# }
 sub _looks_like_invocant ($) { local $@; !!eval { $_[0]->isa(__PACKAGE__) } }
@@ -347,6 +347,23 @@
     5.029008 => '2019-02-20',
     5.029009 => '2019-03-20',
     5.028002 => '2019-04-19',
+    5.029010 => '2019-04-20',
+    5.030000 => '2019-05-22',
+    5.031000 => '2019-05-24',
+    5.031001 => '2019-06-20',
+    5.031002 => '2019-07-20',
+    5.031003 => '2019-08-20',
+    5.031004 => '2019-09-20',
+    5.031005 => '2019-10-20',
+    5.030001 => '2019-11-10',
+    5.031006 => '2019-11-20',
+    5.031007 => '2019-12-20',
+    5.031008 => '2020-01-20',
+    5.031009 => '2020-02-20',
+    5.030002 => '2020-03-14',
+    5.031010 => '2020-03-20',
+    5.031011 => '2020-04-28',
+    5.028003 => '2020-06-01',
   );
 
 for my $version ( sort { $a <=> $b } keys %released ) {
@@ -16231,6 +16248,1230 @@
         removed => {
         }
     },
+    5.029010 => {
+        delta_from => 5.029009,
+        changed => {
+            'B::Op_private'         => '5.029010',
+            'Config'                => '5.02901',
+            'Cwd'                   => '3.78',
+            'Data::Dumper'          => '2.174',
+            'ExtUtils::CBuilder'    => '0.280231',
+            'ExtUtils::CBuilder::Base'=> '0.280231',
+            'ExtUtils::CBuilder::Platform::Unix'=> '0.280231',
+            'ExtUtils::CBuilder::Platform::VMS'=> '0.280231',
+            'ExtUtils::CBuilder::Platform::Windows'=> '0.280231',
+            'ExtUtils::CBuilder::Platform::Windows::BCC'=> '0.280231',
+            'ExtUtils::CBuilder::Platform::Windows::GCC'=> '0.280231',
+            'ExtUtils::CBuilder::Platform::Windows::MSVC'=> '0.280231',
+            'ExtUtils::CBuilder::Platform::aix'=> '0.280231',
+            'ExtUtils::CBuilder::Platform::android'=> '0.280231',
+            'ExtUtils::CBuilder::Platform::cygwin'=> '0.280231',
+            'ExtUtils::CBuilder::Platform::darwin'=> '0.280231',
+            'ExtUtils::CBuilder::Platform::dec_osf'=> '0.280231',
+            'ExtUtils::CBuilder::Platform::os2'=> '0.280231',
+            'File::Spec'            => '3.78',
+            'File::Spec::AmigaOS'   => '3.78',
+            'File::Spec::Cygwin'    => '3.78',
+            'File::Spec::Epoc'      => '3.78',
+            'File::Spec::Functions' => '3.78',
+            'File::Spec::Mac'       => '3.78',
+            'File::Spec::OS2'       => '3.78',
+            'File::Spec::Unix'      => '3.78',
+            'File::Spec::VMS'       => '3.78',
+            'File::Spec::Win32'     => '3.78',
+            'I18N::Langinfo'        => '0.18',
+            'Module::CoreList'      => '5.20190420',
+            'Module::CoreList::Utils'=> '5.20190420',
+            'Module::Metadata'      => '1.000036',
+            'POSIX'                 => '1.88',
+            'Storable'              => '3.15',
+            'Unicode'               => '12.1.0',
+        },
+        removed => {
+        }
+    },
+    5.030000 => {
+        delta_from => 5.02901,
+        changed => {
+            'B::Op_private'         => '5.030000',
+            'Config'                => '5.03',
+            'Devel::PPPort'         => '3.52',
+            'Module::CoreList'      => '5.20190522',
+            'Module::CoreList::Utils'=> '5.20190522',
+            'XS::Typemap'           => '0.17',
+        },
+        removed => {
+        }
+    },
+    5.031000 => {
+        delta_from => 5.03,
+        changed => {
+            'B::Op_private'         => '5.031000',
+            'Config'                => '5.031',
+            'Module::CoreList'      => '5.20190524',
+            'Module::CoreList::Utils'=> '5.20190524',
+            'Pod::Simple'           => '3.36',
+            'Pod::Simple::BlackBox' => '3.36',
+            'Pod::Simple::Checker'  => '3.36',
+            'Pod::Simple::Debug'    => '3.36',
+            'Pod::Simple::DumpAsText'=> '3.36',
+            'Pod::Simple::DumpAsXML'=> '3.36',
+            'Pod::Simple::HTML'     => '3.36',
+            'Pod::Simple::HTMLBatch'=> '3.36',
+            'Pod::Simple::JustPod'  => undef,
+            'Pod::Simple::LinkSection'=> '3.36',
+            'Pod::Simple::Methody'  => '3.36',
+            'Pod::Simple::Progress' => '3.36',
+            'Pod::Simple::PullParser'=> '3.36',
+            'Pod::Simple::PullParserEndToken'=> '3.36',
+            'Pod::Simple::PullParserStartToken'=> '3.36',
+            'Pod::Simple::PullParserTextToken'=> '3.36',
+            'Pod::Simple::PullParserToken'=> '3.36',
+            'Pod::Simple::RTF'      => '3.36',
+            'Pod::Simple::Search'   => '3.36',
+            'Pod::Simple::SimpleTree'=> '3.36',
+            'Pod::Simple::Text'     => '3.36',
+            'Pod::Simple::TextContent'=> '3.36',
+            'Pod::Simple::TiedOutFH'=> '3.36',
+            'Pod::Simple::Transcode'=> '3.36',
+            'Pod::Simple::TranscodeDumb'=> '3.36',
+            'Pod::Simple::TranscodeSmart'=> '3.36',
+            'Pod::Simple::XHTML'    => '3.36',
+            'Pod::Simple::XMLOutStream'=> '3.36',
+            'Socket'                => '2.029',
+            'feature'               => '1.55',
+        },
+        removed => {
+        }
+    },
+    5.031001 => {
+        delta_from => 5.031000,
+        changed => {
+            'App::Cpan'             => '1.675',
+            'B::Op_private'         => '5.031001',
+            'CPAN'                  => '2.27',
+            'CPAN::Bundle'          => '5.5005',
+            'CPAN::Distribution'    => '2.27',
+            'CPAN::FTP'             => '5.5012',
+            'CPAN::FirstTime'       => '5.5314',
+            'CPAN::HandleConfig'    => '5.5011',
+            'CPAN::Mirrors'         => '2.27',
+            'CPAN::Queue'           => '5.5003',
+            'CPAN::Shell'           => '5.5009',
+            'CPAN::Tarzip'          => '5.5013',
+            'Class::Struct'         => '0.66',
+            'Compress::Raw::Bzip2'  => '2.086',
+            'Compress::Raw::Zlib'   => '2.086',
+            'Compress::Zlib'        => '2.086',
+            'Config'                => '5.031001',
+            'DB_File'               => '1.852',
+            'Devel::PPPort'         => '3.53',
+            'ExtUtils::CBuilder'    => '0.280232',
+            'ExtUtils::Command'     => '7.36',
+            'ExtUtils::Command::MM' => '7.36',
+            'ExtUtils::Liblist'     => '7.36',
+            'ExtUtils::Liblist::Kid'=> '7.36',
+            'ExtUtils::MM'          => '7.36',
+            'ExtUtils::MM_AIX'      => '7.36',
+            'ExtUtils::MM_Any'      => '7.36',
+            'ExtUtils::MM_BeOS'     => '7.36',
+            'ExtUtils::MM_Cygwin'   => '7.36',
+            'ExtUtils::MM_DOS'      => '7.36',
+            'ExtUtils::MM_Darwin'   => '7.36',
+            'ExtUtils::MM_MacOS'    => '7.36',
+            'ExtUtils::MM_NW5'      => '7.36',
+            'ExtUtils::MM_OS2'      => '7.36',
+            'ExtUtils::MM_QNX'      => '7.36',
+            'ExtUtils::MM_UWIN'     => '7.36',
+            'ExtUtils::MM_Unix'     => '7.36',
+            'ExtUtils::MM_VMS'      => '7.36',
+            'ExtUtils::MM_VOS'      => '7.36',
+            'ExtUtils::MM_Win32'    => '7.36',
+            'ExtUtils::MM_Win95'    => '7.36',
+            'ExtUtils::MY'          => '7.36',
+            'ExtUtils::MakeMaker'   => '7.36',
+            'ExtUtils::MakeMaker::Config'=> '7.36',
+            'ExtUtils::MakeMaker::Locale'=> '7.36',
+            'ExtUtils::MakeMaker::version'=> '7.36',
+            'ExtUtils::MakeMaker::version::regex'=> '7.36',
+            'ExtUtils::Mkbootstrap' => '7.36',
+            'ExtUtils::Mksymlists'  => '7.36',
+            'ExtUtils::testlib'     => '7.36',
+            'File::Spec::Win32'     => '3.79',
+            'I18N::LangTags'        => '0.44',
+            'IO'                    => '1.41',
+            'IO::Compress::Adapter::Bzip2'=> '2.086',
+            'IO::Compress::Adapter::Deflate'=> '2.086',
+            'IO::Compress::Adapter::Identity'=> '2.086',
+            'IO::Compress::Base'    => '2.086',
+            'IO::Compress::Base::Common'=> '2.086',
+            'IO::Compress::Bzip2'   => '2.086',
+            'IO::Compress::Deflate' => '2.086',
+            'IO::Compress::Gzip'    => '2.086',
+            'IO::Compress::Gzip::Constants'=> '2.086',
+            'IO::Compress::RawDeflate'=> '2.086',
+            'IO::Compress::Zip'     => '2.086',
+            'IO::Compress::Zip::Constants'=> '2.086',
+            'IO::Compress::Zlib::Constants'=> '2.086',
+            'IO::Compress::Zlib::Extra'=> '2.086',
+            'IO::Dir'               => '1.41',
+            'IO::File'              => '1.41',
+            'IO::Handle'            => '1.41',
+            'IO::Pipe'              => '1.41',
+            'IO::Poll'              => '1.41',
+            'IO::Seekable'          => '1.41',
+            'IO::Select'            => '1.41',
+            'IO::Socket'            => '1.41',
+            'IO::Socket::INET'      => '1.41',
+            'IO::Socket::UNIX'      => '1.41',
+            'IO::Uncompress::Adapter::Bunzip2'=> '2.086',
+            'IO::Uncompress::Adapter::Identity'=> '2.086',
+            'IO::Uncompress::Adapter::Inflate'=> '2.086',
+            'IO::Uncompress::AnyInflate'=> '2.086',
+            'IO::Uncompress::AnyUncompress'=> '2.086',
+            'IO::Uncompress::Base'  => '2.086',
+            'IO::Uncompress::Bunzip2'=> '2.086',
+            'IO::Uncompress::Gunzip'=> '2.086',
+            'IO::Uncompress::Inflate'=> '2.086',
+            'IO::Uncompress::RawInflate'=> '2.086',
+            'IO::Uncompress::Unzip' => '2.086',
+            'Module::CoreList'      => '5.20190620',
+            'Module::CoreList::Utils'=> '5.20190620',
+            'POSIX'                 => '1.89',
+            'Pod::Man'              => '4.12',
+            'Pod::ParseLink'        => '4.12',
+            'Pod::Simple'           => '3.38',
+            'Pod::Simple::BlackBox' => '3.38',
+            'Pod::Simple::Checker'  => '3.38',
+            'Pod::Simple::Debug'    => '3.38',
+            'Pod::Simple::DumpAsText'=> '3.38',
+            'Pod::Simple::DumpAsXML'=> '3.38',
+            'Pod::Simple::HTML'     => '3.38',
+            'Pod::Simple::HTMLBatch'=> '3.38',
+            'Pod::Simple::LinkSection'=> '3.38',
+            'Pod::Simple::Methody'  => '3.38',
+            'Pod::Simple::Progress' => '3.38',
+            'Pod::Simple::PullParser'=> '3.38',
+            'Pod::Simple::PullParserEndToken'=> '3.38',
+            'Pod::Simple::PullParserStartToken'=> '3.38',
+            'Pod::Simple::PullParserTextToken'=> '3.38',
+            'Pod::Simple::PullParserToken'=> '3.38',
+            'Pod::Simple::RTF'      => '3.38',
+            'Pod::Simple::Search'   => '3.38',
+            'Pod::Simple::SimpleTree'=> '3.38',
+            'Pod::Simple::Text'     => '3.38',
+            'Pod::Simple::TextContent'=> '3.38',
+            'Pod::Simple::TiedOutFH'=> '3.38',
+            'Pod::Simple::Transcode'=> '3.38',
+            'Pod::Simple::TranscodeDumb'=> '3.38',
+            'Pod::Simple::TranscodeSmart'=> '3.38',
+            'Pod::Simple::XHTML'    => '3.38',
+            'Pod::Simple::XMLOutStream'=> '3.38',
+            'Pod::Text'             => '4.12',
+            'Pod::Text::Color'      => '4.12',
+            'Pod::Text::Overstrike' => '4.12',
+            'Pod::Text::Termcap'    => '4.12',
+            'SelfLoader'            => '1.26',
+            'Storable'              => '3.16',
+            'Sys::Hostname'         => '1.23',
+            'Test2'                 => '1.302164',
+            'Test2::API'            => '1.302164',
+            'Test2::API::Breakage'  => '1.302164',
+            'Test2::API::Context'   => '1.302164',
+            'Test2::API::Instance'  => '1.302164',
+            'Test2::API::Stack'     => '1.302164',
+            'Test2::Event'          => '1.302164',
+            'Test2::Event::Bail'    => '1.302164',
+            'Test2::Event::Diag'    => '1.302164',
+            'Test2::Event::Encoding'=> '1.302164',
+            'Test2::Event::Exception'=> '1.302164',
+            'Test2::Event::Fail'    => '1.302164',
+            'Test2::Event::Generic' => '1.302164',
+            'Test2::Event::Note'    => '1.302164',
+            'Test2::Event::Ok'      => '1.302164',
+            'Test2::Event::Pass'    => '1.302164',
+            'Test2::Event::Plan'    => '1.302164',
+            'Test2::Event::Skip'    => '1.302164',
+            'Test2::Event::Subtest' => '1.302164',
+            'Test2::Event::TAP::Version'=> '1.302164',
+            'Test2::Event::V2'      => '1.302164',
+            'Test2::Event::Waiting' => '1.302164',
+            'Test2::EventFacet'     => '1.302164',
+            'Test2::EventFacet::About'=> '1.302164',
+            'Test2::EventFacet::Amnesty'=> '1.302164',
+            'Test2::EventFacet::Assert'=> '1.302164',
+            'Test2::EventFacet::Control'=> '1.302164',
+            'Test2::EventFacet::Error'=> '1.302164',
+            'Test2::EventFacet::Hub'=> '1.302164',
+            'Test2::EventFacet::Info'=> '1.302164',
+            'Test2::EventFacet::Info::Table'=> '1.302164',
+            'Test2::EventFacet::Meta'=> '1.302164',
+            'Test2::EventFacet::Parent'=> '1.302164',
+            'Test2::EventFacet::Plan'=> '1.302164',
+            'Test2::EventFacet::Render'=> '1.302164',
+            'Test2::EventFacet::Trace'=> '1.302164',
+            'Test2::Formatter'      => '1.302164',
+            'Test2::Formatter::TAP' => '1.302164',
+            'Test2::Hub'            => '1.302164',
+            'Test2::Hub::Interceptor'=> '1.302164',
+            'Test2::Hub::Interceptor::Terminator'=> '1.302164',
+            'Test2::Hub::Subtest'   => '1.302164',
+            'Test2::IPC'            => '1.302164',
+            'Test2::IPC::Driver'    => '1.302164',
+            'Test2::IPC::Driver::Files'=> '1.302164',
+            'Test2::Tools::Tiny'    => '1.302164',
+            'Test2::Util'           => '1.302164',
+            'Test2::Util::ExternalMeta'=> '1.302164',
+            'Test2::Util::Facets2Legacy'=> '1.302164',
+            'Test2::Util::HashBase' => '1.302164',
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+            'Test2::Util'           => '1.302175',
+            'Test2::Util::ExternalMeta'=> '1.302175',
+            'Test2::Util::Facets2Legacy'=> '1.302175',
+            'Test2::Util::HashBase' => '1.302175',
+            'Test2::Util::Trace'    => '1.302175',
+            'Test::Builder'         => '1.302175',
+            'Test::Builder::Formatter'=> '1.302175',
+            'Test::Builder::Module' => '1.302175',
+            'Test::Builder::Tester' => '1.302175',
+            'Test::Builder::Tester::Color'=> '1.302175',
+            'Test::Builder::TodoDiag'=> '1.302175',
+            'Test::More'            => '1.302175',
+            'Test::Simple'          => '1.302175',
+            'Test::Tester'          => '1.302175',
+            'Test::Tester::Capture' => '1.302175',
+            'Test::Tester::CaptureRunner'=> '1.302175',
+            'Test::Tester::Delegate'=> '1.302175',
+            'Test::use::ok'         => '1.302175',
+            'Time::Piece'           => '1.3401',
+            'Time::Seconds'         => '1.3401',
+            'Unicode::UCD'          => '0.75',
+            'XS::APItest'           => '1.09',
+            '_charnames'            => '1.47',
+            'charnames'             => '1.47',
+            'ok'                    => '1.302175',
+            'open'                  => '1.12',
+            're'                    => '0.39',
+            'warnings'              => '1.47',
+        },
+        removed => {
+        }
+    },
+    5.028003 => {
+        delta_from => 5.028002,
+        changed => {
+            'B::Op_private'         => '5.028003',
+            'Config'                => '5.028003',
+            'Module::CoreList'      => '5.20200601_28',
+            'Module::CoreList::Utils'=> '5.20200601_28',
+        },
+        removed => {
+        }
+    },
 );
 
 sub is_core
@@ -17219,6 +18460,125 @@
         removed => {
         }
     },
+    5.029010 => {
+        delta_from => 5.029009,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.030000 => {
+        delta_from => 5.02901,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031000 => {
+        delta_from => 5.030000,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031001 => {
+        delta_from => 5.031000,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031002 => {
+        delta_from => 5.031001,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031003 => {
+        delta_from => 5.031002,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031004 => {
+        delta_from => 5.031003,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031005 => {
+        delta_from => 5.031004,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.030001 => {
+        delta_from => 5.030000,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031006 => {
+        delta_from => 5.031005,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031007 => {
+        delta_from => 5.031006,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031008 => {
+        delta_from => 5.031007,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031009 => {
+        delta_from => 5.031008,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.030002 => {
+        delta_from => 5.030001,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031010 => {
+        delta_from => 5.031009,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.031011 => {
+        delta_from => 5.03101,
+        changed => {
+        },
+        removed => {
+        }
+    },
+    5.028003 => {
+        delta_from => 5.028002,
+        changed => {
+        },
+        removed => {
+        }
+    },
 );
 
 %deprecated = _undelta(\%deprecated);
@@ -18112,7 +19472,7 @@
     'Unicode::Collate::CJK::Stroke'=> undef,
     'Unicode::Collate::CJK::Zhuyin'=> undef,
     'Unicode::Collate::Locale'=> undef,
-    'Win32'                 => undef,
+    'Win32'                 => 'https://github.com/perl-libwin32/win32/issues',
     'Win32API::File'        => undef,
     'Win32API::File::inc::ExtUtils::Myconst2perl'=> undef,
     'autodie'               => 'http://rt.cpan.org/NoAuth/Bugs.html?Dist=autodie',
diff -urN perl-5.28.2/dist/Module-CoreList/lib/Module/CoreList.pod perl-5.28.3/dist/Module-CoreList/lib/Module/CoreList.pod
--- perl-5.28.2/dist/Module-CoreList/lib/Module/CoreList.pod	2018-11-01 22:07:44.000000000 +0000
+++ perl-5.28.3/dist/Module-CoreList/lib/Module/CoreList.pod	2020-05-14 14:20:54.000000000 +0100
@@ -215,10 +215,10 @@
 for each core module.
 
 BUGS is an email or url to post bug reports.  For modules with
-UPSTREAM => 'blead', use perl5-porters@perl.org.  rt.cpan.org
+UPSTREAM => 'blead', use L<mailto:perl5-porters@perl.org>.  rt.cpan.org
 appears to automatically provide a URL for CPAN modules; any value
 given here overrides the default:
-http://rt.cpan.org/Public/Dist/Display.html?Name=$ModuleName
+L<http://rt.cpan.org/Public/Dist/Display.html?Name=$ModuleName>
 
 =back
 
diff -urN perl-5.28.2/dist/Module-CoreList/Makefile.PL perl-5.28.3/dist/Module-CoreList/Makefile.PL
--- perl-5.28.2/dist/Module-CoreList/Makefile.PL	2018-11-01 22:07:44.000000000 +0000
+++ perl-5.28.3/dist/Module-CoreList/Makefile.PL	2020-05-14 15:35:04.000000000 +0100
@@ -1,11 +1,15 @@
 use ExtUtils::MakeMaker;
 
+use strict;
+use warnings;
+
+my @extra;
 push @extra, 'INSTALLDIRS' => 'perl' if $] >= 5.008009 and $] < 5.012;
 
 push @extra, 'META_MERGE' => {
         resources => {
-            repository => 'git://perl5.git.perl.org/perl.git',
-            bugtracker => 'https://rt.perl.org/rt3/',
+            repository => 'git://github.com/Perl/perl5.git',
+            bugtracker => 'https://github.com/Perl/perl5/issues',
             homepage   => "http://dev.perl.org/";,
         },
     } unless $ExtUtils::MakeMaker::VERSION < 6.46;
diff -urN perl-5.28.2/embed.fnc perl-5.28.3/embed.fnc
--- perl-5.28.2/embed.fnc	2019-03-26 21:07:46.000000000 +0000
+++ perl-5.28.3/embed.fnc	2020-05-17 10:34:38.000000000 +0100
@@ -2476,7 +2476,8 @@
 				|NULLOK struct scan_data_t *data \
                                 |I32 stopparen|U32 recursed_depth \
 				|NULLOK regnode_ssc *and_withp \
-				|U32 flags|U32 depth
+				|U32 flags|U32 depth|bool was_mutate_ok
+Es	|void	|rck_elide_nothing|NN regnode *node
 EsR	|SV *	|get_ANYOFM_contents|NN const regnode * n
 EsRn	|U32	|add_data	|NN RExC_state_t* const pRExC_state \
 				|NN const char* const s|const U32 n
diff -urN perl-5.28.2/embed.h perl-5.28.3/embed.h
--- perl-5.28.2/embed.h	2019-03-26 21:07:46.000000000 +0000
+++ perl-5.28.3/embed.h	2020-05-17 10:34:38.000000000 +0100
@@ -1202,6 +1202,7 @@
 #define output_or_return_posix_warnings(a,b,c)	S_output_or_return_posix_warnings(aTHX_ a,b,c)
 #define parse_lparen_question_flags(a)	S_parse_lparen_question_flags(aTHX_ a)
 #define populate_ANYOF_from_invlist(a,b)	S_populate_ANYOF_from_invlist(aTHX_ a,b)
+#define rck_elide_nothing(a)	S_rck_elide_nothing(aTHX_ a)
 #define reg(a,b,c,d)		S_reg(aTHX_ a,b,c,d)
 #define reg2Lanode(a,b,c,d)	S_reg2Lanode(aTHX_ a,b,c,d)
 #define reg_node(a,b)		S_reg_node(aTHX_ a,b)
@@ -1231,7 +1232,7 @@
 #define ssc_is_cp_posixl_init	S_ssc_is_cp_posixl_init
 #define ssc_or(a,b,c)		S_ssc_or(aTHX_ a,b,c)
 #define ssc_union(a,b,c)	S_ssc_union(aTHX_ a,b,c)
-#define study_chunk(a,b,c,d,e,f,g,h,i,j,k)	S_study_chunk(aTHX_ a,b,c,d,e,f,g,h,i,j,k)
+#define study_chunk(a,b,c,d,e,f,g,h,i,j,k,l)	S_study_chunk(aTHX_ a,b,c,d,e,f,g,h,i,j,k,l)
 #  endif
 #  if defined(PERL_IN_REGCOMP_C) || defined (PERL_IN_DUMP_C)
 #define _invlist_dump(a,b,c,d)	Perl__invlist_dump(aTHX_ a,b,c,d)
diff -urN perl-5.28.2/lib/B/Op_private.pm perl-5.28.3/lib/B/Op_private.pm
--- perl-5.28.2/lib/B/Op_private.pm	2019-03-28 21:46:46.000000000 +0000
+++ perl-5.28.3/lib/B/Op_private.pm	2020-05-14 16:45:44.000000000 +0100
@@ -118,7 +118,7 @@
 our %bits;
 
 
-our $VERSION = "5.028002";
+our $VERSION = "5.028003";
 
 $bits{$_}{3} = 'OPpENTERSUB_AMPER' for qw(entersub rv2cv);
 $bits{$_}{6} = 'OPpENTERSUB_DB' for qw(entersub rv2cv);
diff -urN perl-5.28.2/perl.c perl-5.28.3/perl.c
--- perl-5.28.2/perl.c	2019-04-04 21:28:33.000000000 +0100
+++ perl-5.28.3/perl.c	2020-05-14 16:36:02.000000000 +0100
@@ -3,7 +3,7 @@
  *
  *    Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
  *    2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
- *    2013, 2014, 2015, 2016, 2017, 2018, 2019 by Larry Wall and others
+ *    2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 by Larry Wall and others
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -3760,7 +3760,7 @@
 #endif
 
 	PerlIO_printf(PIO_stdout,
-		      "\n\nCopyright 1987-2019, Larry Wall\n");
+		      "\n\nCopyright 1987-2020, Larry Wall\n");
 #ifdef MSDOS
 	PerlIO_printf(PIO_stdout,
 		      "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
diff -urN perl-5.28.2/proto.h perl-5.28.3/proto.h
--- perl-5.28.2/proto.h	2019-03-26 21:07:46.000000000 +0000
+++ perl-5.28.3/proto.h	2020-05-17 10:34:38.000000000 +0100
@@ -5485,6 +5485,9 @@
 STATIC void	S_populate_ANYOF_from_invlist(pTHX_ regnode *node, SV** invlist_ptr);
 #define PERL_ARGS_ASSERT_POPULATE_ANYOF_FROM_INVLIST	\
 	assert(node); assert(invlist_ptr)
+STATIC void	S_rck_elide_nothing(pTHX_ regnode *node);
+#define PERL_ARGS_ASSERT_RCK_ELIDE_NOTHING	\
+	assert(node)
 PERL_STATIC_NO_RET void	S_re_croak2(pTHX_ bool utf8, const char* pat1, const char* pat2, ...)
 			__attribute__noreturn__;
 #define PERL_ARGS_ASSERT_RE_CROAK2	\
@@ -5593,7 +5596,7 @@
 #define PERL_ARGS_ASSERT_SSC_UNION	\
 	assert(ssc); assert(invlist)
 #endif
-STATIC SSize_t	S_study_chunk(pTHX_ RExC_state_t *pRExC_state, regnode **scanp, SSize_t *minlenp, SSize_t *deltap, regnode *last, struct scan_data_t *data, I32 stopparen, U32 recursed_depth, regnode_ssc *and_withp, U32 flags, U32 depth);
+STATIC SSize_t	S_study_chunk(pTHX_ RExC_state_t *pRExC_state, regnode **scanp, SSize_t *minlenp, SSize_t *deltap, regnode *last, struct scan_data_t *data, I32 stopparen, U32 recursed_depth, regnode_ssc *and_withp, U32 flags, U32 depth, bool was_mutate_ok);
 #define PERL_ARGS_ASSERT_STUDY_CHUNK	\
 	assert(pRExC_state); assert(scanp); assert(minlenp); assert(deltap); assert(last)
 #endif
diff -urN perl-5.28.2/regcomp.c perl-5.28.3/regcomp.c
--- perl-5.28.2/regcomp.c	2019-03-28 20:15:26.000000000 +0000
+++ perl-5.28.3/regcomp.c	2020-05-17 10:34:38.000000000 +0100
@@ -110,6 +110,7 @@
     regnode *next_regnode;      /* next node to process when last is reached */
     U32 prev_recursed_depth;
     I32 stopparen;              /* what stopparen do we use */
+    bool in_gosub;              /* this or an outer frame is for GOSUB */
 
     struct scan_frame *this_prev_frame; /* this previous frame */
     struct scan_frame *prev_frame;      /* previous frame */
@@ -4178,6 +4179,44 @@
     } while (f);
 }
 
+/* Follow the next-chain of the current node and optimize away
+   all the NOTHINGs from it.
+ */
+STATIC void
+S_rck_elide_nothing(pTHX_ regnode *node)
+{
+    dVAR;
+
+    PERL_ARGS_ASSERT_RCK_ELIDE_NOTHING;
+
+    if (OP(node) != CURLYX) {
+        const int max = (reg_off_by_arg[OP(node)]
+                        ? I32_MAX
+                          /* I32 may be smaller than U16 on CRAYs! */
+                        : (I32_MAX < U16_MAX ? I32_MAX : U16_MAX));
+        int off = (reg_off_by_arg[OP(node)] ? ARG(node) : NEXT_OFF(node));
+        int noff;
+        regnode *n = node;
+
+        /* Skip NOTHING and LONGJMP. */
+        while (
+            (n = regnext(n))
+            && (
+                (PL_regkind[OP(n)] == NOTHING && (noff = NEXT_OFF(n)))
+                || ((OP(n) == LONGJMP) && (noff = ARG(n)))
+            )
+            && off + noff < max
+        ) {
+            off += noff;
+        }
+        if (reg_off_by_arg[OP(node)])
+            ARG(node) = off;
+        else
+            NEXT_OFF(node) = off;
+    }
+    return;
+}
+
 /* the return from this sub is the minimum length that could possibly match */
 STATIC SSize_t
 S_study_chunk(pTHX_ RExC_state_t *pRExC_state, regnode **scanp,
@@ -4187,7 +4226,7 @@
 			I32 stopparen,
                         U32 recursed_depth,
 			regnode_ssc *and_withp,
-			U32 flags, U32 depth)
+			U32 flags, U32 depth, bool was_mutate_ok)
 			/* scanp: Start here (read-write). */
 			/* deltap: Write maxlen-minlen here. */
 			/* last: Stop before this one. */
@@ -4265,6 +4304,10 @@
                                    node length to get a real minimum (because
                                    the folded version may be shorter) */
 	bool unfolded_multi_char = FALSE;
+        /* avoid mutating ops if we are anywhere within the recursed or
+         * enframed handling for a GOSUB: the outermost level will handle it.
+         */
+        bool mutate_ok = was_mutate_ok && !(frame && frame->in_gosub);
 	/* Peephole optimizer: */
         DEBUG_STUDYDATA("Peep", data, depth, is_inf);
         DEBUG_PEEP("Peep", scan, depth, flags);
@@ -4275,30 +4318,13 @@
          * parsing code, as each (?:..) is handled by a different invocation of
          * reg() -- Yves
          */
-        JOIN_EXACT(scan,&min_subtract, &unfolded_multi_char, 0);
+        if (mutate_ok)
+            JOIN_EXACT(scan,&min_subtract, &unfolded_multi_char, 0);
 
-	/* Follow the next-chain of the current node and optimize
-	   away all the NOTHINGs from it.  */
-	if (OP(scan) != CURLYX) {
-	    const int max = (reg_off_by_arg[OP(scan)]
-		       ? I32_MAX
-		       /* I32 may be smaller than U16 on CRAYs! */
-		       : (I32_MAX < U16_MAX ? I32_MAX : U16_MAX));
-	    int off = (reg_off_by_arg[OP(scan)] ? ARG(scan) : NEXT_OFF(scan));
-	    int noff;
-	    regnode *n = scan;
-
-	    /* Skip NOTHING and LONGJMP. */
-	    while ((n = regnext(n))
-		   && ((PL_regkind[OP(n)] == NOTHING && (noff = NEXT_OFF(n)))
-		       || ((OP(n) == LONGJMP) && (noff = ARG(n))))
-		   && off + noff < max)
-		off += noff;
-	    if (reg_off_by_arg[OP(scan)])
-		ARG(scan) = off;
-	    else
-		NEXT_OFF(scan) = off;
-	}
+        /* Follow the next-chain of the current node and optimize
+           away all the NOTHINGs from it.
+         */
+        rck_elide_nothing(scan);
 
 	/* The principal pseudo-switch.  Cannot be a switch, since we
 	   look into several different things.  */
@@ -4325,7 +4351,7 @@
             /* DEFINEP study_chunk() recursion */
             (void)study_chunk(pRExC_state, &scan, &minlen,
                               &deltanext, next, &data_fake, stopparen,
-                              recursed_depth, NULL, f, depth+1);
+                              recursed_depth, NULL, f, depth+1, mutate_ok);
 
             scan = next;
         } else
@@ -4393,7 +4419,8 @@
                     /* recurse study_chunk() for each BRANCH in an alternation */
 		    minnext = study_chunk(pRExC_state, &scan, minlenp,
                                       &deltanext, next, &data_fake, stopparen,
-                                      recursed_depth, NULL, f,depth+1);
+                                      recursed_depth, NULL, f, depth+1,
+                                      mutate_ok);
 
 		    if (min1 > minnext)
 			min1 = minnext;
@@ -4460,9 +4487,10 @@
 		    }
 		}
 
-                if (PERL_ENABLE_TRIE_OPTIMISATION &&
-                        OP( startbranch ) == BRANCH )
-                {
+                if (PERL_ENABLE_TRIE_OPTIMISATION
+                    && OP(startbranch) == BRANCH
+                    && mutate_ok
+                ) {
 		/* demq.
 
                    Assuming this was/is a branch we are dealing with: 'scan'
@@ -4913,6 +4941,9 @@
                 newframe->stopparen = stopparen;
                 newframe->prev_recursed_depth = recursed_depth;
                 newframe->this_prev_frame= frame;
+                newframe->in_gosub = (
+                    (frame && frame->in_gosub) || OP(scan) == GOSUB
+                );
 
                 DEBUG_STUDYDATA("frame-new", data, depth, is_inf);
                 DEBUG_PEEP("fnew", scan, depth, flags);
@@ -5133,7 +5164,7 @@
                                   (mincount == 0
                                    ? (f & ~SCF_DO_SUBSTR)
                                    : f)
-                                  ,depth+1);
+                                  , depth+1, mutate_ok);
 
 		if (flags & SCF_DO_STCLASS)
 		    data->start_class = oclass;
@@ -5181,6 +5212,12 @@
 		    (void)ReREFCNT_inc(RExC_rx_sv);
 		}
 
+                if ( ( minnext > 0 && mincount >= SSize_t_MAX / minnext )
+                    || min >= SSize_t_MAX - minnext * mincount )
+                {
+                    FAIL("Regexp out of space");
+                }
+
 		min += minnext * mincount;
 		is_inf_internal |= deltanext == SSize_t_MAX
                          || (maxcount == REG_INFTY && minnext + deltanext > 0);
@@ -5195,7 +5232,9 @@
 		if (  OP(oscan) == CURLYX && data
 		      && data->flags & SF_IN_PAR
 		      && !(data->flags & SF_HAS_EVAL)
-		      && !deltanext && minnext == 1 ) {
+		      && !deltanext && minnext == 1
+                      && mutate_ok
+                ) {
 		    /* Try to optimize to CURLYN.  */
 		    regnode *nxt = NEXTOPER(oscan) + EXTRA_STEP_2ARGS;
 		    regnode * const nxt1 = nxt;
@@ -5241,10 +5280,10 @@
 		      && !(data->flags & SF_HAS_EVAL)
 		      && !deltanext	/* atom is fixed width */
 		      && minnext != 0	/* CURLYM can't handle zero width */
-
                          /* Nor characters whose fold at run-time may be
                           * multi-character */
                       && ! (RExC_seen & REG_UNFOLDED_MULTI_SEEN)
+                      && mutate_ok
 		) {
 		    /* XXXX How to optimize if data == 0? */
 		    /* Optimize to a simpler form.  */
@@ -5292,7 +5331,8 @@
 			/* Optimize again: */
                         /* recurse study_chunk() on optimised CURLYX => CURLYM */
 			study_chunk(pRExC_state, &nxt1, minlenp, &deltanext, nxt,
-                                    NULL, stopparen, recursed_depth, NULL, 0,depth+1);
+                                    NULL, stopparen, recursed_depth, NULL, 0,
+                                    depth+1, mutate_ok);
 		    }
 		    else
 			oscan->flags = 0;
@@ -5419,11 +5459,7 @@
 		if (data && (fl & SF_HAS_EVAL))
 		    data->flags |= SF_HAS_EVAL;
 	      optimize_curly_tail:
-		if (OP(oscan) != CURLYX) {
-		    while (PL_regkind[OP(next = regnext(oscan))] == NOTHING
-			   && NEXT_OFF(next))
-			NEXT_OFF(oscan) += NEXT_OFF(next);
-		}
+		rck_elide_nothing(oscan);
 		continue;
 
 	    default:
@@ -5713,7 +5749,8 @@
                 /* recurse study_chunk() for lookahead body */
                 minnext = study_chunk(pRExC_state, &nscan, minlenp, &deltanext,
                                       last, &data_fake, stopparen,
-                                      recursed_depth, NULL, f, depth+1);
+                                      recursed_depth, NULL, f, depth+1,
+                                      mutate_ok);
                 if (scan->flags) {
                     if (deltanext) {
 			FAIL("Variable length lookbehind not implemented");
@@ -5805,7 +5842,7 @@
                 *minnextp = study_chunk(pRExC_state, &nscan, minnextp,
                                         &deltanext, last, &data_fake,
                                         stopparen, recursed_depth, NULL,
-                                        f,depth+1);
+                                        f, depth+1, mutate_ok);
                 if (scan->flags) {
                     if (deltanext) {
 			FAIL("Variable length lookbehind not implemented");
@@ -5966,7 +6003,8 @@
                         /* optimise study_chunk() for TRIE */
                         minnext = study_chunk(pRExC_state, &scan, minlenp,
                             &deltanext, (regnode *)nextbranch, &data_fake,
-                            stopparen, recursed_depth, NULL, f,depth+1);
+                            stopparen, recursed_depth, NULL, f, depth+1,
+                            mutate_ok);
                     }
                     if (nextbranch && PL_regkind[OP(nextbranch)]==BRANCH)
                         nextbranch= regnext((regnode*)nextbranch);
@@ -7651,7 +7689,7 @@
             &data, -1, 0, NULL,
             SCF_DO_SUBSTR | SCF_WHILEM_VISITED_POS | stclass_flag
                           | (restudied ? SCF_TRIE_DOING_RESTUDY : 0),
-            0);
+            0, TRUE);
 
 
         CHECK_RESTUDY_GOTO_butfirst(LEAVE_with_name("study_chunk"));
@@ -7780,7 +7818,7 @@
             SCF_DO_STCLASS_AND|SCF_WHILEM_VISITED_POS|(restudied
                                                       ? SCF_TRIE_DOING_RESTUDY
                                                       : 0),
-            0);
+            0, TRUE);
 
         CHECK_RESTUDY_GOTO_butfirst(NOOP);
 
diff -urN perl-5.28.2/t/re/pat.t perl-5.28.3/t/re/pat.t
--- perl-5.28.2/t/re/pat.t	2018-11-01 22:08:01.000000000 +0000
+++ perl-5.28.3/t/re/pat.t	2020-05-17 10:34:38.000000000 +0100
@@ -23,7 +23,7 @@
     skip_all('no re module') unless defined &DynaLoader::boot_DynaLoader;
     skip_all_without_unicode_tables();
 
-plan tests => 848;  # Update this when adding/deleting tests.
+plan tests => 852;  # Update this when adding/deleting tests.
 
 run_tests() unless caller;
 
@@ -1948,6 +1948,30 @@
         fresh_perl_is('m m0*0+\Rm', "",{},"Undefined behavior in address sanitizer");
     }
 
+    # gh16947: test regexp corruption (GOSUB)
+    {
+        fresh_perl_is(q{
+            'xy' =~ /x(?0)|x(?|y|y)/ && print 'ok'
+        }, 'ok', {}, 'gh16947: test regexp corruption (GOSUB)');
+    }
+    # gh16947: test fix doesn't break SUSPEND
+    {
+        fresh_perl_is(q{ 'sx' =~ m{ss++}i; print 'ok' },
+                'ok', {}, "gh16947: test fix doesn't break SUSPEND");
+    }
+
+    # gh17743: more regexp corruption via GOSUB
+    {
+        fresh_perl_is(q{
+            "0" =~ /((0(?0)|000(?|0000|0000)(?0))|)/; print "ok"
+        }, 'ok', {}, 'gh17743: test regexp corruption (1)');
+
+        fresh_perl_is(q{
+            "000000000000" =~ /(0(())(0((?0)())|000(?|\x{ef}\x{bf}\x{bd}|\x{ef}\x{bf}\x{bd}))|)/;
+            print "ok"
+        }, 'ok', {}, 'gh17743: test regexp corruption (2)');
+    }
+
 } # End of sub run_tests
 
 1;
=encoding utf8

=head1 NAME

perldelta - what is new for perl v5.28.3

=head1 DESCRIPTION

This document describes differences between the 5.28.2 release and the 5.28.3
release.

If you are upgrading from an earlier release such as 5.28.1, first read
L<perl5282delta>, which describes differences between 5.28.1 and 5.28.2.

=head1 Security

=head2 [CVE-2020-10543] Buffer overflow caused by a crafted regular expression

A signed C<size_t> integer overflow in the storage space calculations for
nested regular expression quantifiers could cause a heap buffer overflow in
Perl's regular expression compiler that overwrites memory allocated after the
regular expression storage space with attacker supplied data.

The target system needs a sufficient amount of memory to allocate partial
expansions of the nested quantifiers prior to the overflow occurring.  This
requirement is unlikely to be met on 64-bit systems.

Discovered by: ManhND of The Tarantula Team, VinCSS (a member of Vingroup).

=head2 [CVE-2020-10878] Integer overflow via malformed bytecode produced by a crafted regular expression

Integer overflows in the calculation of offsets between instructions for the
regular expression engine could cause corruption of the intermediate language
state of a compiled regular expression.  An attacker could abuse this behaviour
to insert instructions into the compiled form of a Perl regular expression.

Discovered by: Hugo van der Sanden and Slaven Rezic.

=head2 [CVE-2020-12723] Buffer overflow caused by a crafted regular expression

Recursive calls to C<S_study_chunk()> by Perl's regular expression compiler to
optimize the intermediate language representation of a regular expression could
cause corruption of the intermediate language state of a compiled regular
expression.

Discovered by: Sergey Aleynikov.

=head2 Additional Note

An application written in Perl would only be vulnerable to any of the above
flaws if it evaluates regular expressions supplied by the attacker.  Evaluating
regular expressions in this fashion is known to be dangerous since the regular
expression engine does not protect against denial of service attacks in this
usage scenario.

=head1 Incompatible Changes

There are no changes intentionally incompatible with Perl 5.28.2.  If any
exist, they are bugs, and we request that you submit a report.  See
L</Reporting Bugs> below.

=head1 Modules and Pragmata

=head2 Updated Modules and Pragmata

=over 4

=item *

L<Module::CoreList> has been upgraded from version 5.20190419 to 5.20200601_28.

=back

=head1 Testing

Tests were added and changed to reflect the other additions and changes in this
release.

=head1 Acknowledgements

Perl 5.28.3 represents approximately 13 months of development since Perl 5.28.2
and contains approximately 3,100 lines of changes across 48 files from 16
authors.

Excluding auto-generated files, documentation and release tools, there were
approximately 1,700 lines of changes to 9 .pm, .t, .c and .h files.

Perl continues to flourish into its fourth decade thanks to a vibrant community
of users and developers.  The following people are known to have contributed
the improvements that became Perl 5.28.3:

Chris 'BinGOs' Williams, Dan Book, Hugo van der Sanden, James E Keenan, John
Lightsey, Karen Etheridge, Karl Williamson, Matthew Horsfall, Max Maischein,
Nicolas R., Renee Baecker, Sawyer X, Steve Hay, Tom Hukins, Tony Cook, Zak B.
Elep.

The list above is almost certainly incomplete as it is automatically generated
from version control history.  In particular, it does not include the names of
the (very much appreciated) contributors who reported issues to the Perl bug
tracker.

Many of the changes included in this version originated in the CPAN modules
included in Perl's core.  We're grateful to the entire CPAN community for
helping Perl to flourish.

For a more complete list of all of Perl's historical contributors, please see
the F<AUTHORS> file in the Perl source distribution.

=head1 Reporting Bugs

If you find what you think is a bug, you might check the perl bug database at
L<https://github.com/Perl/perl5/issues>.  There may also be information at
L<https://www.perl.org/>, the Perl Home Page.

If you believe you have an unreported bug, please open an issue at
L<https://github.com/Perl/perl5/issues>.  Be sure to trim your bug down to a
tiny but sufficient test case.

If the bug you are reporting has security implications which make it
inappropriate to send to a public issue tracker, then see
L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION> for details of how to
report the issue.

=head1 Give Thanks

If you wish to thank the Perl 5 Porters for the work we had done in Perl 5, you
can do so by running the C<perlthanks> program:

    perlthanks

This will send an email to the Perl 5 Porters list with your show of thanks.

=head1 SEE ALSO

The F<Changes> file for an explanation of how to view exhaustive details on
what changed.

The F<INSTALL> file for how to build Perl.

The F<README> file for general stuff.

The F<Artistic> and F<Copying> files for copyright information.

=cut

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