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1=encoding utf8
2
c39f7439 3=for comment
9e2ac5d4 4This has been completed up to 7fd683ff3c3, except for:
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11=head1 NAME
12
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13[ this is a template for a new perldelta file. Any text flagged as
14XXX needs to be processed before release. ]
4c793fe3 15
8f97a47a 16perldelta - what is new for perl v5.13.7
a12cf05f 17
8f97a47a 18=head1 DESCRIPTION
fb121860 19
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20This document describes differences between the 5.13.6 release and
21the 5.13.7 release.
eb32ee41 22
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23If you are upgrading from an earlier release such as 5.13.5, first read
24L<perl5136delta>, which describes differences between 5.13.5 and
255.13.6.
eb32ee41 26
8f97a47a 27=head1 Notice
eb32ee41 28
8f97a47a 29XXX Any important notices here
5e26bbbe 30
8f97a47a 31=head1 Core Enhancements
5e26bbbe 32
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33XXX New core language features go here. Summarise user-visible core language
34enhancements. Particularly prominent performance optimisations could go
35here, but most should go in the L</Performance Enhancements> section.
5e26bbbe 36
8f97a47a 37[ List each enhancement as a =head2 entry ]
4f65bc30 38
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39=head2 Single term prototype
40
41The C<+> prototype is a special alternative to C<$> that will act like
42C<\[@%]> when given a literal array or hash variable, but will otherwise
43force scalar context on the argument. This is useful for functions which
44should accept either a literal array or an array reference as the argument:
45
46 sub smartpush (+@) {
47 my $aref = shift;
48 die "Not an array or arrayref" unless ref $aref eq 'ARRAY';
49 push @$aref, @_;
50 }
51
52When using the C<+> prototype, your function must check that the argument
53is of an acceptable type.
54
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55=head2 C<use re '/flags';>
56
57The C<re> pragma now has the ability to turn on regular expression flags
58till the end of the lexical scope:
59
60 use re '/x';
61 "foo" =~ / (.+) /; # /x implied
62
63See L<re/'/flags' mode> for details.
64
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65=head2 Statement labels can appear in more places
66
67Statement labels can now occur before any type of statement or declaration,
68such as C<package>.
69
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70=head2 C<use feature "unicode_strings"> now applies to more regex matching
71
72Another chunk of the L<perlunicode/The "Unicode Bug"> is fixed in this
73release. Now, regular expressions compiled within the scope of the
74"unicode_strings" feature (or under the "u" regex modifier (specifiable
75currently only with infix notation C<(?u:...)> or via C<use re '/u'>)
76will match the same whether or not the target string is encoded in utf8,
77with regard to C<[[:posix:]]> character classes
78
79Work is underway to add the case sensitive matching to the control of
80this feature, but was not complete in time for this dot release.
81
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82=head2 Array and hash container functions accept references
83
84All built-in functions that operate directly on array or hash
85containers now also accept hard references to arrays or hashes:
86
87 |----------------------------+---------------------------|
88 | Traditional syntax | Terse syntax |
89 |----------------------------+---------------------------|
90 | push @$arrayref, @stuff | push $arrayref, @stuff |
91 | unshift @$arrayref, @stuff | unshift $arrayref, @stuff |
92 | pop @$arrayref | pop $arrayref |
93 | shift @$arrayref | shift $arrayref |
94 | splice @$arrayref, 0, 2 | splice $arrayref, 0, 2 |
95 | keys %$hashref | keys $hashref |
96 | keys @$arrayref | keys $arrayref |
97 | values %$hashref | values $hashref |
98 | values @$arrayref | values $arrayref |
99 | ($k,$v) = each %$hashref | ($k,$v) = each $hashref |
100 | ($k,$v) = each @$arrayref | ($k,$v) = each $arrayref |
101 |----------------------------+---------------------------|
102
103This allows these built-in functions to act on long dereferencing chains
104or on the return value of subroutines without needing to wrap them in
105C<@{}> or C<%{}>:
106
107 push @{$obj->tags}, $new_tag; # old way
108 push $obj->tags, $new_tag; # new way
109
110 for ( keys %{$hoh->{genres}{artists}} ) {...} # old way
111 for ( keys $hoh->{genres}{artists} ) {...} # new way
112
113For C<push>, C<unshift> and C<splice>, the reference will auto-vivify
114if it is not defined, just as if it were wrapped with C<@{}>.
115
116Calling C<keys> or C<values> directly on a reference gives a substantial
117performance improvement over explicit dereferencing.
118
119For C<keys>, C<values>, C<each>, when overloaded dereferencing is
120present, the overloaded dereference is used instead of dereferencing the
121underlying reftype. Warnings are issued about assumptions made in the
122following three ambiguous cases:
123
124 (a) If both %{} and @{} overloading exists, %{} is used
125 (b) If %{} overloading exists on a blessed arrayref, %{} is used
126 (c) If @{} overloading exists on a blessed hashref, @{} is used
127
8f97a47a 128=head1 Security
4f65bc30 129
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130XXX Any security-related notices go here. In particular, any security
131vulnerabilities closed should be noted here rather than in the
132L</Selected Bug Fixes> section.
0eec0a4c 133
8f97a47a 134[ List each security issue as a =head2 entry ]
0eec0a4c 135
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136=head1 Incompatible Changes
137
8f97a47a 138XXX For a release on a stable branch, this section aspires to be:
9de15fec 139
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140 There are no changes intentionally incompatible with 5.XXX.XXX. If any
141 exist, they are bugs and reports are welcome.
9de15fec 142
8f97a47a 143[ List each incompatible change as a =head2 entry ]
9de15fec 144
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145=head2 Dereferencing typeglobs
146
147If you assign a typeglob to a scalar variable:
148
149 $glob = *foo;
150
151the glob that is copied to C<$glob> is marked with a special flag
152indicating that the glob is just a copy. This allows subsequent assignments
153to C<$glob> to overwrite the glob. The original glob, however, is
154immutable.
155
156Many Perl operators did not distinguish between these two types of globs.
157This would result in strange behaviour in edge cases: C<untie $scalar>
158would do nothing if the last thing assigned to the scalar was a glob
159(because it treated it as C<untie *$scalar>, which unties a handle).
0b6a3b5a 160Assignment to a glob slot (e.g., C<(*$glob) = \@some_array>) would simply
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161assign C<\@some_array> to C<$glob>.
162
163To fix this, the C<*{}> operator (including the C<*foo> and C<*$foo> forms)
164has been modified to make a new immutable glob if its operand is a glob
165copy. Various operators that make a distinction between globs and scalars
166have been modified to treat only immutable globs as globs.
167
168This causes an incompatible change in code that assigns a glob to the
169return value of C<*{}> when that operator was passed a glob copy. Take the
170following code, for instance:
171
172 $glob = *foo;
173 *$glob = *bar;
174
175The C<*$glob> on the second line returns a new immutable glob. That new
176glob is made an alias to C<*bar>. Then it is discarded.
177
178The upside to this incompatible change is that bugs
179L<[perl #77496]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=77496>,
180L<[perl #77502]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=77502>,
181L<[perl #77508]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=77508>,
182L<[perl #77688]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=77688>,
183and
184L<[perl #77812]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=77812>,
185and maybe others, too, have been fixed.
186
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187See L<http://rt.perl.org/rt3/Public/Bug/Display.html?id=77810> for even
188more detail.
a638ba6f 189
8f97a47a 190=head1 Deprecations
6904a83f 191
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192XXX Any deprecated features, syntax, modules etc. should be listed here.
193In particular, deprecated modules should be listed here even if they are
194listed as an updated module in the L</Modules and Pragmata> section.
6904a83f 195
8f97a47a 196[ List each deprecation as a =head2 entry ]
afa74577 197
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198=head1 Performance Enhancements
199
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200XXX Changes which enhance performance without changing behaviour go here. There
201may well be none in a stable release.
4c793fe3 202
8f97a47a 203[ List each enhancement as a =item entry ]
e2babdfb 204
8f97a47a 205=over 4
e2babdfb 206
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207=item *
208
8f97a47a 209XXX
b141c43c 210
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211=back
212
213=head1 Modules and Pragmata
214
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215XXX All changes to installed files in F<cpan/>, F<dist/>, F<ext/> and F<lib/>
216go here. If Module::CoreList is updated, generate an initial draft of the
217following sections using F<Porting/corelist-perldelta.pl>, which prints stub
218entries to STDOUT. Results can be pasted in place of the '=head2' entries
219below. A paragraph summary for important changes should then be added by hand.
220In an ideal world, dual-life modules would have a F<Changes> file that could be
221cribbed.
e2941eb0 222
8f97a47a 223[ Within each section, list entries as a =item entry ]
e2941eb0 224
8f97a47a 225=head2 New Modules and Pragmata
25e68b8b 226
8f97a47a 227=over 4
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228
229=item *
230
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231C<Unicode::Collate::CJK::JISX0208> module was added by the C<Unicode::Collate>
232upgrade from 0.63 to 0.64. See below.
6481ebaf 233
8f97a47a 234=back
6481ebaf 235
8f97a47a 236=head2 Updated Modules and Pragmata
6481ebaf 237
8f97a47a 238=over 4
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239
240=item *
241
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242C<Archive::Extract> has been upgraded from 0.44 to 0.46
243
244Resolves an issue with NetBSD-current and its new unzip
245executable.
246
247=item *
248
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249C<B> has been upgraded from 1.24 to 1.25.
250
251=item *
252
b293762b 253C<B::Deparse> has been upgraded from 0.99 to 1.01.
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254
255It fixes deparsing of C<our> followed by a variable with funny characters
256(as permitted under the C<utf8> pragma)
257L<[perl #33752]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=33752>.
258
259=item *
260
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261C<CPAN> has been upgraded from 1.94_61 to 1.94_62
262
263=item *
264
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265C<CPANPLUS> has been upgraded from 0.9007 to 0.9010
266
267Fixes for the SQLite source engine and resolving of issues with the
268testsuite when run under local::lib and/or cpanminus
269
270=item *
271
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272C<CPANPLUS::Dist::Build> has been upgraded from 0.48 to 0.50
273
274=item *
275
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276C<DynaLoader> has been upgraded from 1.10 to 1.11.
277
278It fixes a buffer overflow when passed a very long file name.
279
280=item *
281
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282C<ExtUtils::Constant> has been upgraded from 0.22 to 0.23.
283
284=item *
285
286C<Fcntl> has been upgraded from 1.09 to 1.10.
287
288=item *
289
290C<File::Glob> has been upgraded from 1.09 to 1.10.
291
292=item *
293
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294C<GDBM_File> has been upgraded from 1.11 to 1.12.
295
296This fixes a memory leak when DBM filters are used.
297
298=item *
299
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300C<Hash::Util> has been upgraded from 0.09 to 0.10.
301
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302=item *
303
304C<Hash::Util::FieldHash> has been upgraded from 1.05 to 1.06.
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305
306=item *
307
308C<I18N::Langinfo> has been upgraded from 0.06 to 0.07.
309
310=item *
311
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312C<Locale::Maketext> has been upgraded from 1.16 to 1.17
313
314=item *
315
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316C<Math::BigInt::FastCalc> has been upgraded from 0.22 to 0.23.
317
318=item *
319
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320C<mro> has been upgraded from 1.04 to 1.05.
321
322=item *
323
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324C<NDBM_File> has been upgraded from 1.09 to 1.10.
325
326This fixes a memory leak when DBM filters are used.
327
328=item *
329
330C<ODBM_File> has been upgraded from 1.08 to 1.09.
331
332This fixes a memory leak when DBM filters are used.
333
334=item *
335
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336C<parent> has been upgraded from 0.223 to 0.224
337
338=item *
339
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340C<POSIX> has been upgraded from 1.21 to 1.22.
341
342=item *
343
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344C<re> has been upgraded from 0.13 to 0.14, for the sake of the new
345C<use re "/flags"> pragma.
dfa4c013 346
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347=item *
348
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349C<Safe> has been upgraded from 2.28 to 2.29.
350
351It adds C<&version::vxs::VCMP> to the default share.
352
353=item *
354
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355C<SDBM_File> has been upgraded from 1.07 to 1.08.
356
357=item *
358
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359C<SelfLoader> has been upgraded from 1.17 to 1.18.
360
361It now works in taint mode
362L<[perl #72062]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=72062>.
363
364=item *
365
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366C<Socket> has been upgraded from 1.90 to 1.91.
367
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368=item *
369
370C<Sys::Hostname> has been upgraded from 1.13 to 1.14.
371
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372=item *
373
374C<Unicode::Collate> has been upgraded from 0.63 to 0.64
375
376This release newly adds locale C<ja> and the module
377C<Unicode::Collate::CJK::JISX0208> which makes tailoring of 6355 kanji
378(CJK Unified Ideographs) in the JIS X 0208 order.
379
8f97a47a 380=back
dfa4c013 381
8f97a47a 382=head2 Removed Modules and Pragmata
c02ee425 383
8f97a47a 384=over 4
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385
386=item *
387
8f97a47a 388XXX
c9a84c8b 389
8f97a47a 390=back
918184d1 391
8f97a47a 392=head1 Documentation
918184d1 393
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394XXX Changes to files in F<pod/> go here. Consider grouping entries by
395file and be sure to link to the appropriate page, e.g. L<perlfunc>.
918184d1 396
570c3caa 397L<perlvar> reorders the variables and groups them by topic. Each variable
398introduced after Perl 5.000 notes the first version in which it is
399available. L<perlvar> also has a new section for deprecated variables to
400note when they were removed.
401
8f97a47a 402=head2 New Documentation
dca41e57 403
8f97a47a 404XXX Changes which create B<new> files in F<pod/> go here.
dca41e57 405
8f97a47a 406=head3 L<XXX>
c9a84c8b 407
8f97a47a 408XXX Description of the purpose of the new file here
4c793fe3 409
ee0887a9 410=head2 Changes to Existing Documentation
fc1418b7 411
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412XXX Changes which significantly change existing files in F<pod/> go here.
413However, any changes to F<pod/perldiag.pod> should go in the L</Diagnostics>
414section.
415
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416=over
417
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418=item *
419
a5e71717 420Array and hash slices in scalar context are now documented in L<perldata>.
48ea5431 421
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422=item *
423
424L<perlform> and L<perllocale> have been corrected to state that
425C<use locale> affects formats.
426
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427=back
428
8f97a47a 429=head3 L<XXX>
e2babdfb 430
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431=over 4
432
433=item *
434
8f97a47a 435XXX Description of the change here
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436
437=back
e2babdfb 438
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439=head1 Diagnostics
440
441The following additions or changes have been made to diagnostic output,
442including warnings and fatal error messages. For the complete list of
443diagnostic messages, see L<perldiag>.
444
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445XXX New or changed warnings emitted by the core's C<C> code go here. Also
446include any changes in L<perldiag> that reconcile it to the C<C> code.
4c793fe3 447
8f97a47a 448[ Within each section, list entries as a =item entry ]
4c793fe3 449
8f97a47a 450=head2 New Diagnostics
4c793fe3 451
8f97a47a 452XXX Newly added diagnostic messages go here
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453
454=over 4
455
456=item *
457
8f97a47a 458XXX
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459
460=back
461
8f97a47a 462=head2 Changes to Existing Diagnostics
4c793fe3 463
8f97a47a 464XXX Changes (i.e. rewording) of diagnostic messages go here
0c692eed 465
ee0887a9 466=over 4
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467
468=item *
469
8f97a47a 470XXX
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471
472=back
473
8f97a47a 474=head1 Utility Changes
810f3b7c 475
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476XXX Changes to installed programs such as F<perlbug> and F<xsubpp> go
477here. Most of these are built within the directories F<utils> and F<x2p>.
a9e68e41 478
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479[ List utility changes as a =head3 entry for each utility and =item
480entries for each change
481Use L<XXX> with program names to get proper documentation linking. ]
a9e68e41 482
8f97a47a 483=head3 L<XXX>
85318b69 484
ee0887a9 485=over 4
80b6a949 486
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487=item *
488
8f97a47a 489XXX
9ae8c3d9 490
ee0887a9 491=back
e2babdfb 492
8f97a47a 493=head1 Configuration and Compilation
e2babdfb 494
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495XXX Changes to F<Configure>, F<installperl>, F<installman>, and analogous tools
496go here. Any other changes to the Perl build process should be listed here.
497However, any platform-specific changes should be listed in the
498L</Platform Support> section, instead.
346e4e56 499
8f97a47a 500[ List changes as a =item entry ].
78846812 501
8f97a47a 502=over 4
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503
504=item *
505
8f97a47a 506XXX
e54f3f30 507
8f97a47a 508=back
a5763045 509
8f97a47a 510=head1 Testing
5a9a79a4 511
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512XXX Any significant changes to the testing of a freshly built perl should be
513listed here. Changes which create B<new> files in F<t/> go here as do any
514large changes to the testing harness (e.g. when parallel testing was added).
515Changes to existing files in F<t/> aren't worth summarising, although the bugs
516that they represent may be covered elsewhere.
5a9a79a4 517
8f97a47a 518[ List each test improvement as a =item entry ]
a7e93501 519
8f97a47a 520=over 4
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521
522=item *
523
8f97a47a 524XXX
a7e93501 525
8f97a47a 526=back
a7e93501 527
8f97a47a 528=head1 Platform Support
a7e93501 529
8f97a47a 530XXX Any changes to platform support should be listed in the sections below.
a7e93501 531
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532[ Within the sections, list each platform as a =item entry with specific
533changes as paragraphs below it. ]
a7e93501 534
8f97a47a 535=head2 New Platforms
d4a59e54 536
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537XXX List any platforms that this version of perl compiles on, that previous
538versions did not. These will either be enabled by new files in the F<hints/>
539directories, or new subdirectories and F<README> files at the top level of the
540source tree.
d4a59e54 541
8f97a47a 542=over 4
dc08898c 543
8f97a47a 544=item XXX-some-platform
dc08898c 545
8f97a47a 546XXX
dc08898c 547
8f97a47a 548=back
6904a83f 549
8f97a47a 550=head2 Discontinued Platforms
6904a83f 551
8f97a47a 552XXX List any platforms that this version of perl no longer compiles on.
6904a83f 553
8f97a47a 554=over 4
cffb3698 555
8f97a47a 556=item XXX-some-platform
ab4c2c27 557
8f97a47a 558XXX
ab4c2c27 559
8f97a47a 560=back
be1cc451 561
8f97a47a 562=head2 Platform-Specific Notes
be1cc451 563
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564XXX List any changes for specific platforms. This could include configuration
565and compilation changes or changes in portability/compatibility. However,
566changes within modules for platforms should generally be listed in the
567L</Modules and Pragmata> section.
b20c4ee1 568
8f97a47a 569=over 4
b20c4ee1 570
b293762b 571=item Windows
afa74577 572
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573Directory handles are now properly cloned when threads are created. In perl
5745.13.6, child threads simply stopped inheriting directory handles. In
575previous versions, threads would share handles, resulting in crashes.
afa74577 576
8f97a47a 577=back
c8bbf675 578
8f97a47a 579=head1 Internal Changes
c8bbf675 580
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581XXX Changes which affect the interface available to C<XS> code go here.
582Other significant internal changes for future core maintainers should
583be noted as well.
07d5f7aa 584
8f97a47a 585[ List each test improvement as a =item entry ]
07d5f7aa 586
8f97a47a 587=over 4
07d5f7aa 588
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589=item *
590
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591C<lex_start> has been added to the API, but is considered experimental.
592
593=item *
594
595A new C<parse_block> function has been added to the API
596L<[perl #78222]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78222>.
597
598=item *
599
c678e617 600A new, experimental API has been added for accessing the internal
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601structure that Perl uses for C<%^H>. See the functions beginning with
602C<cophh_> in L<perlapi>.
9ae8c3d9 603
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604=item *
605
606A stash can now have a list of effective names in addition to its usual
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607name. The first effective name can be accessed via the C<HvENAME> macro,
608which is now the recommended name to use in MRO linearisations (C<HvNAME>
609being a fallback if there is no C<HvENAME>).
610
611These names are added and deleted via C<hv_ename_add> and
612C<hv_ename_delete>. These two functions are I<not> part of the API.
a5e71717 613
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614=item *
615
616The way the parser handles labels has been cleaned up and refactored. As a
617result, the C<newFOROP()> constructor function no longer takes a parameter
618stating what label is to go in the state op.
619
620=item *
621
622The C<newWHILEOP()> and C<newFOROP()> functions no longer accept a line
623number as a parameter.
624
625=item *
626
627A new C<parse_barestmt()> function has been added, for parsing a statement
628without a label.
629
630=item *
631
632A new C<parse_label()> function has been added, that parses a statement
633labels, separate from statements.
634
635=item *
636
637The C<CvSTASH()> macro can now only be used as an rvalue. C<CvSTASH_set()>
638has been added to replace assignment to C<CvSTASH()>. This is to ensure
639that backreferences are handled properly. These macros are not part of the
640API.
641
642=item *
643
644The C<op_scope()> and C<op_lvalue()> functions have been added to the API,
645but are considered experimental.
646
8f97a47a 647=back
825563b9 648
8f97a47a 649=head1 Selected Bug Fixes
825563b9 650
8f97a47a
TM
651XXX Important bug fixes in the core language are summarised here.
652Bug fixes in files in F<ext/> and F<lib/> are best summarised in
653L</Modules and Pragmata>.
825563b9 654
8f97a47a 655[ List each fix as a =item entry ]
825563b9 656
8f97a47a 657=over 4
825563b9 658
020fe755
AB
659=item *
660
b7bd32cc
FC
661The C<parse_stmt> C function added in earlier in the 5.13.x series has been
662fixed to work with statements ending with C<}>
663L<[perl #78222]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78222>.
664
665=item *
666
667The C<parse_fullstmt> C function added in 5.13.5 has been fixed to work
668when called while an expression is being parsed.
669
670=item *
671
672Characters in the Latin-1 non-ASCII range (0x80 to 0xFF) used not to match
673themselves if the string happened to be UTF8-encoded internally, the
674regular expression was not, and the character in the regular expression was
675inside a repeated group (e.g.,
c678e617 676C<Encode::decode_utf8("\303\200") =~ /(\xc0)+/>)
b7bd32cc
FC
677L<[perl #78464]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78464>.
678
679=item *
680
681The C<(?d)> regular expression construct now overrides a previous C<(?u)>
682or C<use feature "unicode_string">
683L<[perl #78508]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78508>.
684
685=item *
686
687A memory leak in C<do "file">, introduced in perl 5.13.6, has been fixed
688L<[perl #78488]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78488>.
020fe755 689
b293762b
FC
690=item *
691
692Various bugs related to typeglob dereferencing have been fixed. See
693L</Dereferencing typeglobs>, above.
694
695=item *
696
697The C<SvPVbyte> function available to XS modules now calls magic before
698downgrading the SV, to avoid warnings about wide characters
699L<[perl #72398]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=72398>.
700
701=item *
702
703The C<=> operator used to ignore magic (e.g., tie methods) on its
704right-hand side if the scalar happened to hold a typeglob. This could
705happen if a typeglob was the last thing returned from or assigned to a tied
706scalar
707L<[perl #77498]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=77498>.
708
709=item *
710
711C<sprintf> was ignoring locales when called with constant arguments
712L<[perl #78632]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78632>.
713
9b7c43ba
KW
714=item *
715
716A non-ASCII character in the Latin-1 range could match both a Posix
717class, such as C<[[:alnum:]]>, and its inverse C<[[:^alnum:]]>. This is
718now fixed for regular expressions compiled under the C<"u"> modifier.
719See L</C<use feature "unicode_strings"> now applies to more regex matching>.
720L<[perl #18281]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=18281>.
721
8ff01ef0
FC
722=item *
723
724Concatenating long strings under C<use encoding> no longer causes perl to
725crash
726L<[perl #78674]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78674>.
727
728=item *
729
730Typeglob assignments would crash if the glob's stash no longer existed, if
731the glob assigned to was named 'ISA' or the glob on either side of the
732assignment contained a subroutine.
733
734=item *
735
736Calling C<< ->import >> on a class lacking an import method could corrupt the stack result in strange behaviour. For instance,
737
738 push @a, "foo", $b = bar->import;
739
740would assign 'foo' to C<$b>
741L<[perl #63790]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=63790>.
742
743=item *
744
745Creating an alias to a package when that package had been detached from the
746symbol table would result in corrupted isa caches
747L<[perl #77358]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=77358>.
748
749=item *
750
751C<.=> followed by C<< <> >> or C<readline> would leak memory if C<$/>
752contained characters beyond the octet range and the scalar assigned to
753happened to be encoded as UTF8 internally
754L<[perl #72246]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=72246>.
755
756=item *
757
758The C<recv> function could crash when called with the MSG_TRUNC flag
759L<[perl #75082]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=75082>.
760
9e2ac5d4
FC
761=item *
762
763Evaluating a simple glob (like C<*a>) was calling get-magic on the glob,
764even when its contents were not being used
765L<[perl #78580]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78580>.
766
767This bug was introduced in 5.13.2 and did not affect earlier perl versions.
768
8f97a47a 769=back
020fe755 770
8f97a47a 771=head1 Known Problems
020fe755 772
8f97a47a
TM
773XXX Descriptions of platform agnostic bugs we know we can't fix go here. Any
774tests that had to be C<TODO>ed for the release would be noted here, unless
775they were specific to a particular platform (see below).
62ff64ce 776
8f97a47a
TM
777This is a list of some significant unfixed bugs, which are regressions
778from either 5.XXX.XXX or 5.XXX.XXX.
62ff64ce 779
8f97a47a 780[ List each fix as a =item entry ]
62ff64ce 781
8f97a47a 782=over 4
62ff64ce
FC
783
784=item *
785
8f97a47a 786XXX
62ff64ce 787
4c793fe3
FR
788=back
789
8f97a47a 790=head1 Obituary
405fd67e 791
8f97a47a
TM
792XXX If any significant core contributor has died, we've added a short obituary
793here.
405fd67e 794
ee0887a9 795=head1 Acknowledgements
0195fb5f 796
8f97a47a 797XXX The list of people to thank goes here.
4c793fe3
FR
798
799=head1 Reporting Bugs
800
801If you find what you think is a bug, you might check the articles
802recently posted to the comp.lang.perl.misc newsgroup and the perl
803bug database at http://rt.perl.org/perlbug/ . There may also be
804information at http://www.perl.org/ , the Perl Home Page.
805
806If you believe you have an unreported bug, please run the B<perlbug>
807program included with your release. Be sure to trim your bug down
808to a tiny but sufficient test case. Your bug report, along with the
809output of C<perl -V>, will be sent off to perlbug@perl.org to be
810analysed by the Perl porting team.
811
812If the bug you are reporting has security implications, which make it
813inappropriate to send to a publicly archived mailing list, then please send
ee0887a9 814it to perl5-security-report@perl.org. This points to a closed subscription
4c793fe3
FR
815unarchived mailing list, which includes all the core committers, who be able
816to help assess the impact of issues, figure out a resolution, and help
817co-ordinate the release of patches to mitigate or fix the problem across all
ee0887a9 818platforms on which Perl is supported. Please only use this address for
4c793fe3
FR
819security issues in the Perl core, not for modules independently
820distributed on CPAN.
821
822=head1 SEE ALSO
823
824The F<Changes> file for an explanation of how to view exhaustive details
825on what changed.
826
827The F<INSTALL> file for how to build Perl.
828
829The F<README> file for general stuff.
830
831The F<Artistic> and F<Copying> files for copyright information.
832
833=cut