PERL5281DELTA(1) Perl Programmers Reference Guide PERL5281DELTA(1) #

PERL5281DELTA(1) Perl Programmers Reference Guide PERL5281DELTA(1)

NNAAMMEE #

 perl5281delta - what is new for perl v5.28.1

DDEESSCCRRIIPPTTIIOONN #

 This document describes differences between the 5.28.0 release and the
 5.28.1 release.

 If you are upgrading from an earlier release such as 5.26.0, first read
 perl5280delta, which describes differences between 5.26.0 and 5.28.0.

SSeeccuurriittyy [[CCVVEE--22001188--1188331111]] IInntteeggeerr oovveerrffllooww lleeaaddiinngg ttoo bbuuffffeerr oovveerrffllooww aanndd sseeggmmeennttaattiioonn ffaauulltt Integer arithmetic in “Perl_my_setenv()” could wrap when the combined length of the environment variable name and value exceeded around 0x7fffffff. This could lead to writing beyond the end of an allocated buffer with attacker supplied data.

 [GH #16560] <https://github.com/Perl/perl5/issues/16560>

[[CCVVEE--22001188--1188331122]] HHeeaapp--bbuuffffeerr--oovveerrffllooww wwrriittee iinn SS__rreeggaattoomm ((rreeggccoommpp..cc)) A crafted regular expression could cause heap-buffer-overflow write during compilation, potentially allowing arbitrary code execution.

 [GH #16649] <https://github.com/Perl/perl5/issues/16649>

IInnccoommppaattiibbllee CChhaannggeess There are no changes intentionally incompatible with 5.28.0. If any exist, they are bugs, and we request that you submit a report. See “Reporting Bugs” below.

MMoodduulleess aanndd PPrraaggmmaattaa UUppddaatteedd MMoodduulleess aanndd PPrraaggmmaattaa • Module::CoreList has been upgraded from version 5.20180622 to 5.20181129_28.

SSeelleecctteedd BBuugg FFiixxeess • Perl 5.28 introduced an “index()” optimization when comparing to -1 (or indirectly, e.g. >= 0). When this optimization was triggered inside a “when” clause it caused a warning (“Argument %s isn’t numeric in smart match”). This has now been fixed. [GH #16626] https://github.com/Perl/perl5/issues/16626

 •   Matching of decimal digits in script runs, introduced in Perl 5.28,
     had a bug that led to "1\N{THAI DIGIT FIVE}" matching "/^(*sr:\d+)$/"
     when it should not.  This has now been fixed.

 •   The new in-place editing code no longer leaks directory handles.  [GH
     #16602] <https://github.com/Perl/perl5/issues/16602>

AAcckknnoowwlleeddggeemmeennttss Perl 5.28.1 represents approximately 5 months of development since Perl 5.28.0 and contains approximately 6,100 lines of changes across 44 files from 12 authors.

 Excluding auto-generated files, documentation and release tools, there
 were approximately 700 lines of changes to 12 .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 5.28.1:

 Aaron Crane, Abigail, Chris 'BinGOs' Williams, Dagfinn Ilmari Mannsåker,
 David Mitchell, James E Keenan, John SJ Anderson, Karen Etheridge, Karl
 Williamson, Sawyer X, Steve Hay, 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 _A_U_T_H_O_R_S file in the Perl source distribution.

RReeppoorrttiinngg BBuuggss If you find what you think is a bug, you might check the perl bug database at https://rt.perl.org/ . There may also be information at http://www.perl.org/ , the Perl Home Page.

 If you believe you have an unreported bug, please run the 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 "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
 "SECURITY VULNERABILITY CONTACT INFORMATION" in perlsec for details of
 how to report the issue.

GGiivvee TThhaannkkss 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 “perlthanks” program:

     perlthanks

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

SSEEEE AALLSSOO #

 The _C_h_a_n_g_e_s file for an explanation of how to view exhaustive details on
 what changed.

 The _I_N_S_T_A_L_L file for how to build Perl.

 The _R_E_A_D_M_E file for general stuff.

 The _A_r_t_i_s_t_i_c and _C_o_p_y_i_n_g files for copyright information.

perl v5.36.3 2023-02-15 PERL5281DELTA(1)