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diff --git a/pod/perl5296delta.pod b/pod/perl5296delta.pod deleted file mode 100644 index be63ed880e..0000000000 --- a/pod/perl5296delta.pod +++ /dev/null @@ -1,378 +0,0 @@ -=encoding utf8 - -=head1 NAME - -perl5296delta - what is new for perl v5.29.6 - -=head1 DESCRIPTION - -This document describes differences between the 5.29.5 release and the 5.29.6 -release. - -If you are upgrading from an earlier release such as 5.29.4, first read -L<perl5295delta>, which describes differences between 5.29.4 and 5.29.5. - -=head1 Security - -=head2 [CVE-2018-18312] Heap-buffer-overflow write in S_regatom (regcomp.c) - -A crafted regular expression could cause heap-buffer-overflow write during -compilation, potentially allowing arbitrary code execution. (This was -actually fixed in 5.29.4, but not announced as a security fix at the time). -L<[perl #133423]|https://rt.perl.org/Ticket/Display.html?id=133423> - -=head1 Performance Enhancements - -=over 4 - -=item * - -Optimization of C<IV> to C<UV> conversions. -L<[perl #133677]|https://rt.perl.org/Ticket/Display.html?id=133677>. - -=item * - -Speed up of the integer stringification algorithm by processing -two digits at a time instead of one. -L<[perl #133691]|https://rt.perl.org/Ticket/Display.html?id=133691>. - -=item * - -Improvements based on LGTM analysis and recommendation. -(L<https://lgtm.com/projects/g/Perl/perl5/alerts/?mode=tree>). -L<[perl #133686]|https://rt.perl.org/Ticket/Display.html?id=133686>. -L<[perl #133699]|https://rt.perl.org/Ticket/Display.html?id=133699>. - -=item * - -Code optimizations in F<regcomp.c>, F<regcomp.h>, F<regexec.c>. - -=back - -=head1 Modules and Pragmata - -=head2 Updated Modules and Pragmata - -=over 4 - -=item * - -L<Config::Perl::V>. has been upgraded from version 0.30 to 0.32. This was due -to a new configuration variable that has influence on binary compatibility: -C<USE_THREAD_SAFE_LOCALE>. - -=item * - -L<ExtUtils::ParseXS> has been upgraded from version 3.39 to 3.40. -C<OUTLIST> parameters are no longer incorrectly included in the -automatically generated function prototype. -L<[perl #133654]|https://rt.perl.org/Ticket/Display.html?id=133654>. - -=item * - -L<File::Find> has been upgraded from version 1.34 to 1.35. -C<$File::Find::dont_use_nlink> now defaults to 1 on all -platforms. -L<[perl #133673]|https://rt.perl.org/Ticket/Display.html?id=133673>. - -=item * - -L<Module::CoreList> has been upgraded from version 5.20181120 to 5.20181218. - -=item * - -L<POSIX> has been upgraded from version 1.85 to 1.86. - -=item * - -L<Storable> has been upgraded from version 3.13 to 3.14. - -Storable no longer probes for recursion limits at build time. -L<[perl #133708]|https://rt.perl.org/Ticket/Display.html?id=133708> -and others. - -Metasploit exploit code was included to test for CVE-2015-1992 -detection, this caused anti-virus detections on at least one AV suite. -The exploit code has been removed and replaced with a simple -functional test. -L<[perl #133706]|https://rt.perl.org/Ticket/Display.html?id=133706> - -=item * - -L<Test::Simple> has been upgraded from version 1.302140 to 1.302141. - -=item * - -L<threads::shared> has been upgraded from version 1.58 to 1.59. - -=back - -=head1 Documentation - -=head2 Changes to Existing Documentation - -We have attempted to update the documentation to reflect the changes -listed in this document. If you find any we have missed, send email -to L<perlbug@perl.org|mailto:perlbug@perl.org>. - -Additionally, the following selected changes have been made: - -=head3 L<perlfunc> - -=over 4 - -=item * - -Clarification of behaviour of C<reset EXPR>. - -=back - -=head3 L<perlreref> - -=over 4 - -=item * - -Clarification of the syntax of /(?(cond)yes)/. - -=back - -=head3 L<perlop> - -=over - -=item * - -We no longer have null (empty line) here doc terminators, so -L<perlop> should not refer to them. - -=back - -=head1 Diagnostics - -The following additions or changes have been made to diagnostic output, -including warnings and fatal error messages. For the complete list of -diagnostic messages, see L<perldiag>. - -=head2 Changes to Existing Diagnostics - -=over 4 - -=item * - -Under C<< -Dr >> (or C<< use re 'Debug' >>) the compiled regex engine -program is displayed. It used two different spellings for I<< infinity >>, -C<< INFINITY >>, and C<< INFTY >>. It now uses the latter exclusively, -as that spelling has been around the longest. - -=back - -=head1 Utility Changes - -=head2 L<xsubpp> - -=over 4 - -=item * - -The generated prototype (with C<< PROTOTYPES: ENABLE >>) would include -C<< OUTLIST >> parameters, but these aren't arguments to the perl function. -This has been rectified. -L<[perl #133654]|https://rt.perl.org/Ticket/Display.html?id=133654>. - -=back - -=head1 Testing - -Tests were added and changed to reflect the other additions and -changes in this release. Furthermore, these significant changes were -made: - -=over 4 - -=item * - -Some tests in F<< t/io/eintr.t >> caused the process to hang on -pre-16 Darwin. These tests are skipped for those version of Darwin. - -=back - -=head1 Platform Support - -=head2 Platform-Specific Notes - -=over 4 - -=item Cygwin - -Cygwin doesn't make C<< cuserid >> visible. - -=item Win32 Mingw - -C99 math functions are now available. - -=back - -=head1 Internal Changes - -=over 4 - -=item * - -Two new regnodes have been introduced C<< EXACT_ONLY8 >>, and -C<< EXACTFU_ONLY8 >>. They're equivalent to C<< EXACT >> and C<< EXACTFU >>, -except that they contain a code point which requires UTF-8 to -represent/match. Hence, if the target string isn't UTF-8, we know -it can't possibly match, without needing to try. - -=item * - -C<< print_bytes_for_locale() >> is now defined if C<< DEBUGGING >>, -Prior, it didn't get defined unless C<< LC_COLLATE >> was defined -on the platform. - -=back - -=head1 Selected Bug Fixes - -=over 4 - -=item * - -If an in-place edit is still in progress during global destruction and -the process exit code (as stored in C<$?>) is zero, perl will now -treat the in-place edit as successful, replacing the input file with -any output produced. - -This allows code like: - - perl -i -ne 'print "Foo"; last' - -to replace the input file, while code like: - - perl -i -ne 'print "Foo"; die' - -will not. Partly resolves -L<[perl #133659]|https://rt.perl.org/Ticket/Display.html?id=133659>. - -=item * - -A regression in 5.28 caused the following code to fail - - close(STDIN); open(CHILD, "|wc -l")' - -because the child's stdin would be closed on exec. This has now been fixed. - -=item * - -Fixed an issue where compiling a regexp containing both compile-time -and run-time code blocks could lead to trying to compile something -which is invalid syntax. - -=item * - -Fixed build failures with C<< -DNO_LOCALE_NUMERIC >> and -C<< -DNO_LOCALE_COLLATE >>. -L<[perl #133696]|https://rt.perl.org/Ticket/Display.html?id=133696>. - -=item * - -Prevent the tests in F<< ext/B/t/strict.t >> from being skipped. -L<[perl #133713]|https://rt.perl.org/Ticket/Display.html?id=133713>. - -=item * - -C<< /di >> nodes ending or beginning in I<s> are now C<< EXACTF >>. We do not -want two C<< EXACTFU >> to be joined together during optimization, -and to form a C<< ss >>, C<< sS >>, C<< Ss >> or C<< SS >> sequence; -they are the only multi-character sequences which may match differently -under C<< /ui >> and C<< /di >>. - -=back - -=head1 Errata From Previous Releases - -=over 4 - -=item * - -The upper limit C<"n"> specifiable in a regular expression -quantifier of the form C<"{m,n}"> has been doubled to 65534. - -The meaning of an unbounded upper quantifier C<"{m,}"> remains unchanged. -It matches 2**31 - 1 times on most platforms, and more on ones where a C -language short variable is more than 4 bytes long. - -The text above is what perl5294delta should have said. Instead it said -"The maximum number of times a pattern can match has been doubled to 65535" -That statement was wrong. Try to forget you ever saw it. - -=back - -=head1 Acknowledgements - -Perl 5.29.6 represents approximately 4 weeks of development since Perl -5.29.5 and contains approximately 5,000 lines of changes across 230 files -from 19 authors. - -Excluding auto-generated files, documentation and release tools, there were -approximately 2,600 lines of changes to 150 .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 5.29.6: - -Aaron Crane, Abigail, Dagfinn Ilmari Mannsåker, David Mitchell, Dominic -Hargreaves, E. Choroba, Eugen Konkov, H.Merijn Brand, James E Keenan, Jerry -D. Hedden, Karen Etheridge, Karl Williamson, Leon Timmermans, Niko Tyni, -Petr Písař, Sisyphus, Steve Hay, Tomasz Konojacki, Tony Cook. - -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://rt.perl.org/>. There may also be information at -L<http://www.perl.org/>, the Perl Home Page. - -If you believe you have an unreported bug, please run the L<perlbug> program -included with your release. Be sure to trim your bug down to a tiny but -sufficient test case. Your bug report, along with the output of C<perl -V>, -will be sent off to perlbug@perl.org to be analysed by the Perl porting team. - -If the bug you are reporting has security implications which make it -inappropriate to send to a publicly archived mailing list, 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 |