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1 | =encoding utf8 |
2 | ||
59773fc7 | 3 | =for comment |
f853e70a | 4 | This has been completed up to a1fba7e, except for: |
c6008483 | 5 | d9a4b459f94297889956ac3adc42707365f274c2 |
d66e82e8 FC |
6 | bf5522a13a381257966e7ed6b731195a873b153e |
7 | 9cef83062267e94311e1fd8744396e440642738e | |
70bfa48a | 8 | 8e88cfee26d866223a6b3bfffce6270271de00db |
59773fc7 | 9 | |
3a5c9134 CBW |
10 | =head1 NAME |
11 | ||
12 | [ this is a template for a new perldelta file. Any text flagged as | |
13 | XXX needs to be processed before release. ] | |
14 | ||
15 | perldelta - what is new for perl v5.13.8 | |
16 | ||
17 | =head1 DESCRIPTION | |
18 | ||
19 | This document describes differences between the 5.13.8 release and | |
20 | the 5.13.7 release. | |
21 | ||
dbbe2d83 | 22 | If you are upgrading from an earlier release such as 5.13.6, first read |
3a5c9134 CBW |
23 | L<perl5137delta>, which describes differences between 5.13.6 and |
24 | 5.13.7. | |
25 | ||
26 | =head1 Notice | |
27 | ||
28 | XXX Any important notices here | |
29 | ||
30 | =head1 Core Enhancements | |
31 | ||
32 | XXX New core language features go here. Summarise user-visible core language | |
33 | enhancements. Particularly prominent performance optimisations could go | |
34 | here, but most should go in the L</Performance Enhancements> section. | |
35 | ||
36 | [ List each enhancement as a =head2 entry ] | |
37 | ||
b19934fb NC |
38 | =head2 C<-d:-foo> calls C<Devel::foo::unimport> |
39 | ||
40 | The syntax C<-dI<B<:>foo>> was extended in 5.6.1 to make C<-dI<:fooB<=bar>>> | |
6a8c8694 FC |
41 | equivalent to C<-MDevel::foo=bar>, which expands |
42 | internally to C<use Devel::foo 'bar';>. | |
b19934fb NC |
43 | F<perl> now allows prefixing the module name with C<->, with the same |
44 | semantics as C<-M>, I<i.e.> | |
45 | ||
46 | =over 4 | |
47 | ||
48 | =item C<-d:-foo> | |
49 | ||
6a8c8694 FC |
50 | Equivalent to C<-M-Devel::foo>, expands to |
51 | C<no Devel::foo;>, calls C<< Devel::foo->unimport() >> | |
b19934fb NC |
52 | if the method exists. |
53 | ||
54 | =item C<-d:-foo=bar> | |
55 | ||
6a8c8694 FC |
56 | Equivalent to C<-M-Devel::foo=bar>, expands to C<no Devel::foo 'bar';>, |
57 | calls C<< Devel::foo->unimport('bar') >> if the method exists. | |
b19934fb NC |
58 | |
59 | =back | |
60 | ||
61 | This is particularly useful to suppresses the default actions of a | |
62 | C<Devel::*> module's C<import> method whilst still loading it for debugging. | |
63 | ||
15e6cdd9 DG |
64 | =head2 Filehandle method calls load IO::File on demand |
65 | ||
66 | When a method call on a filehandle would die because the method can not | |
67 | be resolved and L<IO::File> has not been loaded, Perl now loads IO::File | |
68 | via C<require> and attempts method resolution again: | |
69 | ||
70 | open my $fh, ">", $file; | |
71 | $fh->binmode(":raw"); # loads IO::File and succeeds | |
72 | ||
73 | This also works for globs like STDOUT, STDERR and STDIN: | |
74 | ||
75 | STDOUT->autoflush(1); | |
76 | ||
77 | Because this on-demand load only happens if method resolution fails, the | |
78 | legacy approach of manually loading an IO::File parent class for partial | |
79 | method support still works as expected: | |
80 | ||
81 | use IO::Handle; | |
82 | open my $fh, ">", $file; | |
83 | $fh->autoflush(1); # IO::File not loaded | |
84 | ||
20db7501 KW |
85 | =head2 Full functionality for C<use feature 'unicode_strings'> |
86 | ||
87 | This release provides full functionality for C<use feature | |
88 | 'unicode_strings'>. Under its scope, all string operations executed and | |
89 | regular expressions compiled (even if executed outside its scope) have | |
90 | Unicode semantics. See L<feature>. | |
91 | ||
92 | This feature avoids the "Unicode Bug" (See | |
93 | L<perlunicode/The "Unicode Bug"> for details.) If their is a | |
94 | possibility that your code will process Unicode strings, you are | |
95 | B<strongly> encouraged to use this subpragma to avoid nasty surprises. | |
96 | ||
ee076ba5 FR |
97 | =head2 Exception Handling Backcompat Hack |
98 | ||
99 | When an exception is thrown in an C<eval BLOCK>, C<$@> is now set before | |
100 | unwinding, as well as being set after unwinding as the eval block exits. This | |
101 | early setting supports code that has historically treated C<$@> during unwinding | |
102 | as an indicator of whether the unwinding was due to an exception. These modules | |
103 | had been broken by 5.13.1's change from setting C<$@> early to setting it late. | |
104 | This double setting arrangement is a stopgap until the reason for unwinding can | |
105 | be made properly introspectable. C<$@> has never been a reliable indicator of | |
106 | this. | |
107 | ||
3a5c9134 CBW |
108 | =head1 Security |
109 | ||
110 | XXX Any security-related notices go here. In particular, any security | |
111 | vulnerabilities closed should be noted here rather than in the | |
112 | L</Selected Bug Fixes> section. | |
113 | ||
114 | [ List each security issue as a =head2 entry ] | |
115 | ||
116 | =head1 Incompatible Changes | |
117 | ||
2dc78664 | 118 | =head2 Attempting to use C<:=> as an empty attribute list is now a syntax error |
3a5c9134 | 119 | |
2dc78664 NC |
120 | Previously C<my $pi := 4;> was exactly equivalent to C<my $pi : = 4;>, |
121 | with the C<:> being treated as the start of an attribute list, ending before | |
122 | the C<=>. The use of C<:=> to mean C<: => was deprecated in 5.12.0, and is now | |
123 | a syntax error. This will allow the future use of C<:=> as a new token. | |
3a5c9134 | 124 | |
2dc78664 NC |
125 | We find no Perl 5 code on CPAN using this construction, outside the core's |
126 | tests for it, so we believe that this change will have very little impact on | |
127 | real-world codebases. | |
128 | ||
129 | If it is absolutely necessary to have empty attribute lists (for example, | |
baed7a72 NC |
130 | because of a code generator) then avoid the error by adding a space before |
131 | the C<=>. | |
3a5c9134 | 132 | |
d66e82e8 FC |
133 | =head2 Run-time code block in regular expressions |
134 | ||
135 | Code blocks in regular expressions (C<(?{...})> and C<(??{...})>) used not | |
136 | to inherit any pragmata (strict, warnings, etc.) if the regular expression | |
137 | was compiled at run time as happens in cases like these two: | |
138 | ||
139 | use re 'eval'; | |
140 | $foo =~ $bar; # when $bar contains (?{...}) | |
141 | $foo =~ /$bar(?{ $finished = 1 })/; | |
142 | ||
143 | This was a bug, which has now been fixed. But it has the potential to break | |
144 | any code that was relying on this bug. | |
145 | ||
3a5c9134 CBW |
146 | =head1 Deprecations |
147 | ||
148 | XXX Any deprecated features, syntax, modules etc. should be listed here. | |
149 | In particular, deprecated modules should be listed here even if they are | |
150 | listed as an updated module in the L</Modules and Pragmata> section. | |
151 | ||
152 | [ List each deprecation as a =head2 entry ] | |
153 | ||
59773fc7 FC |
154 | =head2 C<?PATTERN?> is deprecated |
155 | ||
156 | C<?PATTERN?> (without the initial m) has been deprecated and now produces | |
157 | a warning. | |
158 | ||
d59a8b3e NC |
159 | =head2 C<sv_compile_2op> is now deprecated |
160 | ||
161 | The C<sv_compile_2op> is now deprecated, and will be removed. Searches suggest | |
162 | that nothing on CPAN is using it, so this should have zero impact. | |
163 | ||
164 | It attempted to provide an API to compile code down to an optree, but failed | |
165 | to bind correctly to lexicals in the enclosing scope. It's not possible to | |
166 | fix this problem within the constraints of its parameters and return value. | |
167 | ||
5609d5f9 FC |
168 | =head2 Tie functions on scalars holding typeglobs |
169 | ||
170 | Calling a tie function (C<tie>, C<tied>, C<untie>) with a scalar argument | |
171 | acts on a file handle if the scalar happens to hold a typeglob. | |
172 | ||
173 | This is a long-standing bug that will be removed in Perl 5.16, as | |
174 | there is currently no way to tie the scalar itself when it holds | |
175 | a typeglob, and no way to untie a scalar that has had a typeglob | |
176 | assigned to it. | |
177 | ||
178 | This bug was fixed in 5.13.7 but, because of the breakage it caused, the | |
179 | fix has been reverted. Now there is a deprecation warning whenever a tie | |
180 | function is used on a handle without an explicit C<*>. | |
181 | ||
3a5c9134 CBW |
182 | =head1 Performance Enhancements |
183 | ||
184 | XXX Changes which enhance performance without changing behaviour go here. There | |
185 | may well be none in a stable release. | |
186 | ||
187 | [ List each enhancement as a =item entry ] | |
188 | ||
189 | =over 4 | |
190 | ||
191 | =item * | |
192 | ||
193 | XXX | |
194 | ||
195 | =back | |
196 | ||
197 | =head1 Modules and Pragmata | |
198 | ||
199 | XXX All changes to installed files in F<cpan/>, F<dist/>, F<ext/> and F<lib/> | |
200 | go here. If Module::CoreList is updated, generate an initial draft of the | |
201 | following sections using F<Porting/corelist-perldelta.pl>, which prints stub | |
202 | entries to STDOUT. Results can be pasted in place of the '=head2' entries | |
203 | below. A paragraph summary for important changes should then be added by hand. | |
204 | In an ideal world, dual-life modules would have a F<Changes> file that could be | |
205 | cribbed. | |
206 | ||
207 | [ Within each section, list entries as a =item entry ] | |
208 | ||
209 | =head2 New Modules and Pragmata | |
210 | ||
211 | =over 4 | |
212 | ||
213 | =item * | |
214 | ||
215 | XXX | |
216 | ||
217 | =back | |
218 | ||
219 | =head2 Updated Modules and Pragmata | |
220 | ||
221 | =over 4 | |
222 | ||
223 | =item * | |
224 | ||
06e8058f CBW |
225 | C<ExtUtils::CBuilder> has been upgraded from 0.2703 to 0.2800 |
226 | ||
227 | =item * | |
228 | ||
11f2b7f3 FR |
229 | C<if> has been upgraded from 0.06 to 0.0601. |
230 | ||
231 | =item * | |
232 | ||
39b09a1b CBW |
233 | C<IPC::Cmd> has been upgraded from 0.64 to 0.66 |
234 | ||
235 | Resolves an issue with splitting Win32 command lines | |
236 | and documentation enhancements. | |
237 | ||
238 | =item * | |
239 | ||
1245abf1 CBW |
240 | C<Locale::Codes> has been upgraded from version 3.14 to 3.15 |
241 | ||
242 | =item * | |
243 | ||
28502098 FR |
244 | C<Memoize> has been upgraded from version 1.01_03 to 1.02. |
245 | ||
246 | =item * | |
247 | ||
37fa6334 | 248 | C<MIME::Base64> has been upgraded from 3.10 to 3.13 |
2456140e CBW |
249 | |
250 | Now provides encode_base64url and decode_base64url functions to process | |
251 | the base64 scheme for "URL applications". | |
252 | ||
253 | =item * | |
254 | ||
ad033849 FC |
255 | C<mro> has been upgraded from version 1.05 to 1.06. |
256 | ||
257 | C<next::method> I<et al.> now take into account that every class inherits | |
258 | from UNIVERSAL | |
259 | L<[perl #68654]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=68654>. | |
260 | ||
261 | =item * | |
262 | ||
2638c0ff FC |
263 | C<overload> has been upgraded from 1.11 to 1.12. |
264 | ||
265 | =item * | |
266 | ||
267 | C<PerlIO::scalar> has been upgraded from 0.10 to 0.11. | |
268 | ||
269 | A C<read> after a C<seek> beyond the end of the string no longer thinks it | |
270 | has data to read | |
271 | L<[perl #78716]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78716>. | |
272 | ||
273 | =item * | |
274 | ||
f295f417 FC |
275 | C<re> has been upgraded from 0.14 to 0.15. |
276 | ||
277 | =item * | |
278 | ||
5ebfb99c | 279 | C<Socket> has been upgraded from 1.91 to 1.92. |
b373eab8 FC |
280 | |
281 | It has several new functions for handling IPv6 addresses. | |
282 | ||
283 | =item * | |
284 | ||
b6ae81ab DL |
285 | C<Storable> has been upgraded from 2.24 to 2.25. |
286 | ||
287 | This adds support for serialising code references that contain UTF-8 strings | |
288 | correctly. The Storable minor version number changed as a result -- this means | |
289 | Storable users that set C<$Storable::accept_future_minor> to a C<FALSE> value | |
290 | will see errors (see L<Storable/FORWARD COMPATIBILITY> for more details). | |
291 | ||
292 | =item * | |
293 | ||
d4238815 FC |
294 | C<Time::HiRes> has been upgraded from 1.9721 to 1.9721_01. |
295 | ||
296 | =item * | |
297 | ||
68adb2b0 CBW |
298 | C<Unicode::Collate> has been upgraded from 0.67 to 0.68 |
299 | ||
300 | =item * | |
301 | ||
59773fc7 | 302 | C<Unicode::UCD> has been upgraded from 0.29 to 0.30. |
3a5c9134 | 303 | |
c2e0289e FC |
304 | =item * |
305 | ||
306 | C<version> has been upgraded from 0.82 to 0.86. | |
307 | ||
e6f1cc4d FC |
308 | =item * |
309 | ||
310 | C<Win32> has been upgraded from 0.039 to 0.040. | |
311 | ||
3a5c9134 CBW |
312 | =back |
313 | ||
314 | =head2 Removed Modules and Pragmata | |
315 | ||
316 | =over 4 | |
317 | ||
318 | =item * | |
319 | ||
320 | XXX | |
321 | ||
322 | =back | |
323 | ||
324 | =head1 Documentation | |
325 | ||
326 | XXX Changes to files in F<pod/> go here. Consider grouping entries by | |
327 | file and be sure to link to the appropriate page, e.g. L<perlfunc>. | |
328 | ||
329 | =head2 New Documentation | |
330 | ||
331 | XXX Changes which create B<new> files in F<pod/> go here. | |
332 | ||
333 | =head3 L<XXX> | |
334 | ||
335 | XXX Description of the purpose of the new file here | |
336 | ||
337 | =head2 Changes to Existing Documentation | |
338 | ||
339 | XXX Changes which significantly change existing files in F<pod/> go here. | |
340 | However, any changes to F<pod/perldiag.pod> should go in the L</Diagnostics> | |
341 | section. | |
342 | ||
343 | =head3 L<XXX> | |
344 | ||
345 | =over 4 | |
346 | ||
347 | =item * | |
348 | ||
349 | XXX Description of the change here | |
350 | ||
351 | =back | |
352 | ||
353 | =head1 Diagnostics | |
354 | ||
355 | The following additions or changes have been made to diagnostic output, | |
356 | including warnings and fatal error messages. For the complete list of | |
357 | diagnostic messages, see L<perldiag>. | |
358 | ||
359 | XXX New or changed warnings emitted by the core's C<C> code go here. Also | |
360 | include any changes in L<perldiag> that reconcile it to the C<C> code. | |
361 | ||
362 | [ Within each section, list entries as a =item entry ] | |
363 | ||
364 | =head2 New Diagnostics | |
365 | ||
366 | XXX Newly added diagnostic messages go here | |
367 | ||
368 | =over 4 | |
369 | ||
370 | =item * | |
371 | ||
4d4ca6a5 | 372 | There is a new "Closure prototype called" error. |
3a5c9134 CBW |
373 | |
374 | =back | |
375 | ||
376 | =head2 Changes to Existing Diagnostics | |
377 | ||
378 | XXX Changes (i.e. rewording) of diagnostic messages go here | |
379 | ||
380 | =over 4 | |
381 | ||
382 | =item * | |
383 | ||
c6008483 FC |
384 | The "Found = in conditional" warning that is emitted when a constant is |
385 | assigned to a variable in a condition is now withheld if the constant is | |
386 | actually a subroutine or one generated by C<use constant>, since the value | |
387 | of the constant may not be known at the time the program is written | |
388 | L<[perl #77762]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=77762>. | |
3a5c9134 CBW |
389 | |
390 | =back | |
391 | ||
392 | =head1 Utility Changes | |
393 | ||
394 | XXX Changes to installed programs such as F<perlbug> and F<xsubpp> go | |
395 | here. Most of these are built within the directories F<utils> and F<x2p>. | |
396 | ||
397 | [ List utility changes as a =head3 entry for each utility and =item | |
398 | entries for each change | |
399 | Use L<XXX> with program names to get proper documentation linking. ] | |
400 | ||
401 | =head3 L<XXX> | |
402 | ||
403 | =over 4 | |
404 | ||
405 | =item * | |
406 | ||
407 | XXX | |
408 | ||
409 | =back | |
410 | ||
411 | =head1 Configuration and Compilation | |
412 | ||
413 | XXX Changes to F<Configure>, F<installperl>, F<installman>, and analogous tools | |
414 | go here. Any other changes to the Perl build process should be listed here. | |
415 | However, any platform-specific changes should be listed in the | |
416 | L</Platform Support> section, instead. | |
417 | ||
418 | [ List changes as a =item entry ]. | |
419 | ||
420 | =over 4 | |
421 | ||
422 | =item * | |
423 | ||
424 | XXX | |
425 | ||
426 | =back | |
427 | ||
428 | =head1 Testing | |
429 | ||
430 | XXX Any significant changes to the testing of a freshly built perl should be | |
431 | listed here. Changes which create B<new> files in F<t/> go here as do any | |
432 | large changes to the testing harness (e.g. when parallel testing was added). | |
433 | Changes to existing files in F<t/> aren't worth summarising, although the bugs | |
434 | that they represent may be covered elsewhere. | |
435 | ||
436 | [ List each test improvement as a =item entry ] | |
437 | ||
438 | =over 4 | |
439 | ||
440 | =item * | |
441 | ||
442 | XXX | |
443 | ||
444 | =back | |
445 | ||
446 | =head1 Platform Support | |
447 | ||
448 | XXX Any changes to platform support should be listed in the sections below. | |
449 | ||
450 | [ Within the sections, list each platform as a =item entry with specific | |
451 | changes as paragraphs below it. ] | |
452 | ||
453 | =head2 New Platforms | |
454 | ||
455 | XXX List any platforms that this version of perl compiles on, that previous | |
456 | versions did not. These will either be enabled by new files in the F<hints/> | |
457 | directories, or new subdirectories and F<README> files at the top level of the | |
458 | source tree. | |
459 | ||
460 | =over 4 | |
461 | ||
462 | =item XXX-some-platform | |
463 | ||
464 | XXX | |
465 | ||
466 | =back | |
467 | ||
468 | =head2 Discontinued Platforms | |
469 | ||
470 | XXX List any platforms that this version of perl no longer compiles on. | |
471 | ||
472 | =over 4 | |
473 | ||
474 | =item XXX-some-platform | |
475 | ||
476 | XXX | |
477 | ||
478 | =back | |
479 | ||
480 | =head2 Platform-Specific Notes | |
481 | ||
482 | XXX List any changes for specific platforms. This could include configuration | |
483 | and compilation changes or changes in portability/compatibility. However, | |
484 | changes within modules for platforms should generally be listed in the | |
485 | L</Modules and Pragmata> section. | |
486 | ||
487 | =over 4 | |
488 | ||
085d0904 | 489 | =item NetBSD |
3a5c9134 | 490 | |
085d0904 FC |
491 | The NetBSD hints file has been changed to make the system's malloc the |
492 | default. | |
3a5c9134 CBW |
493 | |
494 | =back | |
495 | ||
496 | =head1 Internal Changes | |
497 | ||
498 | XXX Changes which affect the interface available to C<XS> code go here. | |
499 | Other significant internal changes for future core maintainers should | |
500 | be noted as well. | |
501 | ||
502 | [ List each test improvement as a =item entry ] | |
503 | ||
504 | =over 4 | |
505 | ||
506 | =item * | |
507 | ||
833f1b93 FR |
508 | C<mg_findext> and C<sv_unmagicext> have been added. |
509 | ||
510 | These new functions allow extension authors to find and remove magic attached to | |
511 | scalars based on both the magic type and the magic virtual table, similar to how | |
512 | C<sv_magicext> attaches magic of a certain type and with a given virtual table | |
513 | to a scalar. This eliminates the need for extensions to walk the list of | |
514 | C<MAGIC> pointers of an C<SV> to find the magic that belongs to them. | |
3a5c9134 CBW |
515 | |
516 | =back | |
517 | ||
518 | =head1 Selected Bug Fixes | |
519 | ||
520 | XXX Important bug fixes in the core language are summarised here. | |
521 | Bug fixes in files in F<ext/> and F<lib/> are best summarised in | |
522 | L</Modules and Pragmata>. | |
523 | ||
524 | [ List each fix as a =item entry ] | |
525 | ||
526 | =over 4 | |
527 | ||
528 | =item * | |
529 | ||
88e9444c NC |
530 | C<BEGIN {require 5.12.0}> now behaves as documented, rather than behaving |
531 | identically to C<use 5.12.0;>. Previously, C<require> in a C<BEGIN> block | |
532 | was erroneously executing the C<use feature ':5.12.0'> and | |
533 | C<use strict; use warnings;> behaviour, which only C<use> was documented to | |
b373eab8 FC |
534 | provide |
535 | L<[perl #69050]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=69050>. | |
536 | ||
537 | =item * | |
538 | ||
539 | C<use 5.42> | |
540 | L<[perl #69050]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=69050>, | |
541 | C<use 6> and C<no 5> no longer leak memory. | |
542 | ||
543 | =item * | |
544 | ||
545 | C<eval "BEGIN{die}"> no longer leaks memory on non-threaded builds. | |
3a5c9134 | 546 | |
1428a560 FC |
547 | =item * |
548 | ||
549 | PerlIO no longer crashes when called recursively, e.g., from a signal | |
550 | handler. Now it just leaks memory | |
551 | L<[perl #75556]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=75556>. | |
552 | ||
11cd2234 FC |
553 | =item * |
554 | ||
555 | Defining a constant with the same name as one of perl's special blocks | |
556 | (e.g., INIT) stopped working in 5.12.0, but has now been fixed | |
557 | L<[perl #78634]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78634>. | |
558 | ||
e3ef43a5 FC |
559 | =item * |
560 | ||
561 | A reference to a literal value used as a hash key (C<$hash{\"foo"}>) used | |
562 | to be stringified, even if the hash was tied | |
563 | L<[perl #79178]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=79178>. | |
564 | ||
3ad6135d FC |
565 | =item * |
566 | ||
3ad6135d FC |
567 | A closure containing an C<if> statement followed by a constant or variable |
568 | is no longer treated as a constant | |
569 | L<[perl #63540]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=63540>. | |
570 | ||
4d4ca6a5 FC |
571 | =item * |
572 | ||
573 | Calling a closure prototype (what is passed to an attribute handler for a | |
574 | closure) now results in a "Closure prototype called" error message | |
575 | L<[perl #68560]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=68560>. | |
576 | ||
085d0904 FC |
577 | =item * |
578 | ||
579 | A regular expression optimisation would sometimes cause a match with a | |
580 | C<{n,m}> quantifier to fail when it should match | |
581 | L<[perl #79152]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=79152>. | |
582 | ||
20db7501 KW |
583 | =item * |
584 | ||
585 | What has become known as the "Unicode Bug" is resolved in this release. | |
586 | Under C<use feature 'unicode_strings'>, the internal storage format of a | |
587 | string no longer affects the external semantics. There are two known | |
588 | exceptions. User-defined case changing functions, which are planned to | |
589 | be deprecated in 5.14, require utf8-encoded strings to function; and the | |
590 | character C<LATIN SMALL LETTER SHARP S> in regular expression | |
591 | case-insensitive matching has a somewhat different set of bugs depending | |
592 | on the internal storage format. Case-insensitive matching of all | |
593 | characters that have multi-character matches, as this one does, is | |
594 | problematical in Perl. | |
595 | L<[perl #58182]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=58182>. | |
596 | ||
70bfa48a FC |
597 | =item * |
598 | ||
599 | Mentioning a read-only lexical variable from the enclosing scope in a | |
600 | string C<eval> would cause the variable to become writable | |
601 | L<[perl #19135]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=19135>. | |
602 | ||
f853e70a FC |
603 | =item * |
604 | ||
605 | C<state> can now be used with attributes. It used to mean the same thing as | |
606 | C<my> if attributes were present | |
607 | L<[perl #68658]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=68658>. | |
608 | ||
3a5c9134 CBW |
609 | =back |
610 | ||
611 | =head1 Known Problems | |
612 | ||
613 | XXX Descriptions of platform agnostic bugs we know we can't fix go here. Any | |
614 | tests that had to be C<TODO>ed for the release would be noted here, unless | |
615 | they were specific to a particular platform (see below). | |
616 | ||
617 | This is a list of some significant unfixed bugs, which are regressions | |
618 | from either 5.XXX.XXX or 5.XXX.XXX. | |
619 | ||
620 | [ List each fix as a =item entry ] | |
621 | ||
622 | =over 4 | |
623 | ||
624 | =item * | |
625 | ||
3ad6135d | 626 | XXX |
3a5c9134 CBW |
627 | |
628 | =back | |
629 | ||
630 | =head1 Obituary | |
631 | ||
632 | XXX If any significant core contributor has died, we've added a short obituary | |
633 | here. | |
634 | ||
635 | =head1 Acknowledgements | |
636 | ||
637 | XXX The list of people to thank goes here. | |
638 | ||
639 | =head1 Reporting Bugs | |
640 | ||
641 | If you find what you think is a bug, you might check the articles | |
642 | recently posted to the comp.lang.perl.misc newsgroup and the perl | |
643 | bug database at http://rt.perl.org/perlbug/ . There may also be | |
644 | information at http://www.perl.org/ , the Perl Home Page. | |
645 | ||
646 | If you believe you have an unreported bug, please run the L<perlbug> | |
647 | program included with your release. Be sure to trim your bug down | |
648 | to a tiny but sufficient test case. Your bug report, along with the | |
649 | output of C<perl -V>, will be sent off to perlbug@perl.org to be | |
650 | analysed by the Perl porting team. | |
651 | ||
652 | If the bug you are reporting has security implications, which make it | |
653 | inappropriate to send to a publicly archived mailing list, then please send | |
654 | it to perl5-security-report@perl.org. This points to a closed subscription | |
655 | unarchived mailing list, which includes all the core committers, who be able | |
656 | to help assess the impact of issues, figure out a resolution, and help | |
657 | co-ordinate the release of patches to mitigate or fix the problem across all | |
658 | platforms on which Perl is supported. Please only use this address for | |
659 | security issues in the Perl core, not for modules independently | |
660 | distributed on CPAN. | |
661 | ||
662 | =head1 SEE ALSO | |
663 | ||
664 | The F<Changes> file for an explanation of how to view exhaustive details | |
665 | on what changed. | |
666 | ||
667 | The F<INSTALL> file for how to build Perl. | |
668 | ||
669 | The F<README> file for general stuff. | |
670 | ||
671 | The F<Artistic> and F<Copying> files for copyright information. | |
672 | ||
673 | =cut |