5 perl5143delta - what is new for perl v5.14.3
9 This document describes differences between the 5.14.2 release and
12 If you are upgrading from an earlier release such as 5.12.0, first read
13 L<perl5140delta>, which describes differences between 5.12.0 and
16 =head1 Core Enhancements
18 No changes since 5.14.0.
22 =head2 C<Digest> unsafe use of eval (CVE-2011-3597)
24 The C<Digest-E<gt>new()> function did not properly sanitize input before
25 using it in an eval() call, which could lead to the injection of arbitrary
28 In order to exploit this flaw, the attacker would need to be able to set
29 the algorithm name used, or be able to execute arbitrary Perl code already.
31 This problem has been fixed.
33 =head2 Heap buffer overrun in 'x' string repeat operator (CVE-2012-5195)
35 Poorly written perl code that allows an attacker to specify the count to
36 perl's 'x' string repeat operator can already cause a memory exhaustion
37 denial-of-service attack. A flaw in versions of perl before 5.15.5 can
38 escalate that into a heap buffer overrun; coupled with versions of glibc
39 before 2.16, it possibly allows the execution of arbitrary code.
41 This problem has been fixed.
43 =head1 Incompatible Changes
45 There are no changes intentionally incompatible with 5.14.0. If any
46 exist, they are bugs and reports are welcome.
50 There have been no deprecations since 5.14.0.
52 =head1 Modules and Pragmata
54 =head2 New Modules and Pragmata
58 =head2 Updated Modules and Pragmata
64 L<PerlIO::scalar> was updated to fix a bug in which opening a filehandle to
65 a glob copy caused assertion failures (under debugging) or hangs or other
66 erratic behaviour without debugging.
70 L<ODBM_File> and L<NDBM_File> were updated to allow building on GNU/Hurd.
74 L<IPC::Open3> has been updated to fix a regression introduced in perl
75 5.12, which broke C<IPC::Open3::open3($in, $out, $err, '-')>.
80 L<Digest> has been upgraded from version 1.16 to 1.16_01.
86 L<Module::CoreList> has been updated to version 2.49_04 to add data for
91 =head2 Removed Modules and Pragmata
97 =head2 New Documentation
101 =head2 Changes to Existing Documentation
109 L<perlcheat> was updated to 5.14.
113 =head1 Configuration and Compilation
119 h2ph was updated to search correctly gcc include directories on platforms
120 such as Debian with multi-architecture support.
124 In Configure, the test for procselfexe was refactored into a loop.
128 =head1 Platform Support
134 =head2 Discontinued Platforms
138 =head2 Platform-Specific Notes
144 The FreeBSD hints file was corrected to be compatible with FreeBSD 10.0.
146 =item Solaris and NetBSD
148 Configure was updated for "procselfexe" support on Solaris and NetBSD.
152 README.hpux was updated to note the existence of a broken header in
157 libutil is no longer used when compiling on Linux platforms, which avoids
158 warnings being emitted.
160 The system gcc (rather than any other gcc which might be in the compiling
161 user's path) is now used when searching for libraries such as C<-lm>.
165 The locale tests were updated to reflect the behaviour of locales in
170 Various build and test fixes were included for GNU/Hurd.
172 LFS support was enabled in GNU/Hurd.
176 The NetBSD hints file was corrected to be compatible with NetBSD 6.*
186 A regression has been fixed that was introduced in 5.14, in C</i>
187 regular expression matching, in which a match improperly fails if the
188 pattern is in UTF-8, the target string is not, and a Latin-1 character
189 precedes a character in the string that should match the pattern. [perl
194 In case-insensitive regular expression pattern matching, no longer on
195 UTF-8 encoded strings does the scan for the start of match only look at
196 the first possible position. This caused matches such as
197 C<"f\x{FB00}" =~ /ff/i> to fail.
201 The sitecustomize support was made relocatableinc aware, so that
202 -Dusesitecustomize and -Duserelocatableinc may be used together.
206 The smartmatch operator (C<~~>) was changed so that the right-hand side
207 takes precedence during C<Any ~~ Object> operations.
211 A bug has been fixed in the tainting support, in which an C<index()>
212 operation on a tainted constant would cause all other constants to become
213 tainted. [perl #64804]
217 A regression has been fixed that was introduced in perl 5.12, whereby
218 tainting errors were not correctly propagated through C<die()>.
223 A regression has been fixed that was introduced in perl 5.14, in which
224 C</[[:lower:]]/i> and C</[[:upper:]]/i> no longer matched the opposite case.
229 =head1 Acknowledgements
231 Perl 5.14.3 represents approximately 12 months of development since Perl 5.14.2
232 and contains approximately 2,300 lines of changes across 64 files from 22
235 Perl continues to flourish into its third decade thanks to a vibrant community
236 of users and developers. The following people are known to have contributed the
237 improvements that became Perl 5.14.3:
239 Abigail, Andy Dougherty, Carl Hayter, Chris 'BinGOs' Williams, Dave Rolsky,
240 David Mitchell, Dominic Hargreaves, Father Chrysostomos, Florian Ragwitz,
241 H.Merijn Brand, Jilles Tjoelker, Karl Williamson, Leon Timmermans, Michael G
242 Schwern, Nicholas Clark, Niko Tyni, Pino Toscano, Ricardo Signes, Salvador
243 FandiƱo, Samuel Thibault, Steve Hay, Tony Cook.
245 The list above is almost certainly incomplete as it is automatically generated
246 from version control history. In particular, it does not include the names of
247 the (very much appreciated) contributors who reported issues to the Perl bug
250 Many of the changes included in this version originated in the CPAN modules
251 included in Perl's core. We're grateful to the entire CPAN community for
252 helping Perl to flourish.
254 For a more complete list of all of Perl's historical contributors, please see
255 the F<AUTHORS> file in the Perl source distribution.
257 =head1 Reporting Bugs
259 If you find what you think is a bug, you might check the articles
260 recently posted to the comp.lang.perl.misc newsgroup and the perl
261 bug database at http://rt.perl.org/perlbug/ . There may also be
262 information at http://www.perl.org/ , the Perl Home Page.
264 If you believe you have an unreported bug, please run the L<perlbug>
265 program included with your release. Be sure to trim your bug down
266 to a tiny but sufficient test case. Your bug report, along with the
267 output of C<perl -V>, will be sent off to perlbug@perl.org to be
268 analysed by the Perl porting team.
270 If the bug you are reporting has security implications, which make it
271 inappropriate to send to a publicly archived mailing list, then please send
272 it to perl5-security-report@perl.org. This points to a closed subscription
273 unarchived mailing list, which includes all the core committers, who be able
274 to help assess the impact of issues, figure out a resolution, and help
275 co-ordinate the release of patches to mitigate or fix the problem across all
276 platforms on which Perl is supported. Please only use this address for
277 security issues in the Perl core, not for modules independently
282 The F<Changes> file for an explanation of how to view exhaustive details
285 The F<INSTALL> file for how to build Perl.
287 The F<README> file for general stuff.
289 The F<Artistic> and F<Copying> files for copyright information.