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1 | =encoding utf8 |
2 | ||
59773fc7 | 3 | =for comment |
7cdf3308 | 4 | This has been completed up to 26de4ac8, 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 | $fh->autoflush(1); # IO::File not loaded | |
84 | ||
20db7501 KW |
85 | =head2 Full functionality for C<use feature 'unicode_strings'> |
86 | ||
87 | This release provides full functionality for C<use feature | |
88 | 'unicode_strings'>. Under its scope, all string operations executed and | |
89 | regular expressions compiled (even if executed outside its scope) have | |
90 | Unicode semantics. See L<feature>. | |
91 | ||
92 | This feature avoids the "Unicode Bug" (See | |
93 | L<perlunicode/The "Unicode Bug"> for details.) If their is a | |
94 | possibility that your code will process Unicode strings, you are | |
95 | B<strongly> encouraged to use this subpragma to avoid nasty surprises. | |
96 | ||
07291fb1 KW |
97 | This availability of this should strongly affect the whole tone of |
98 | various documents, such as L<perlunicode> and L<perluniintro>, but this | |
99 | work has not been done yet. | |
100 | ||
ee076ba5 FR |
101 | =head2 Exception Handling Backcompat Hack |
102 | ||
103 | When an exception is thrown in an C<eval BLOCK>, C<$@> is now set before | |
104 | unwinding, as well as being set after unwinding as the eval block exits. This | |
105 | early setting supports code that has historically treated C<$@> during unwinding | |
106 | as an indicator of whether the unwinding was due to an exception. These modules | |
107 | had been broken by 5.13.1's change from setting C<$@> early to setting it late. | |
108 | This double setting arrangement is a stopgap until the reason for unwinding can | |
109 | be made properly introspectable. C<$@> has never been a reliable indicator of | |
110 | this. | |
111 | ||
3a5c9134 CBW |
112 | =head1 Security |
113 | ||
114 | XXX Any security-related notices go here. In particular, any security | |
115 | vulnerabilities closed should be noted here rather than in the | |
116 | L</Selected Bug Fixes> section. | |
117 | ||
118 | [ List each security issue as a =head2 entry ] | |
119 | ||
120 | =head1 Incompatible Changes | |
121 | ||
2dc78664 | 122 | =head2 Attempting to use C<:=> as an empty attribute list is now a syntax error |
3a5c9134 | 123 | |
2dc78664 NC |
124 | Previously C<my $pi := 4;> was exactly equivalent to C<my $pi : = 4;>, |
125 | with the C<:> being treated as the start of an attribute list, ending before | |
126 | the C<=>. The use of C<:=> to mean C<: => was deprecated in 5.12.0, and is now | |
127 | a syntax error. This will allow the future use of C<:=> as a new token. | |
3a5c9134 | 128 | |
2dc78664 NC |
129 | We find no Perl 5 code on CPAN using this construction, outside the core's |
130 | tests for it, so we believe that this change will have very little impact on | |
131 | real-world codebases. | |
132 | ||
133 | If it is absolutely necessary to have empty attribute lists (for example, | |
baed7a72 NC |
134 | because of a code generator) then avoid the error by adding a space before |
135 | the C<=>. | |
3a5c9134 | 136 | |
d66e82e8 FC |
137 | =head2 Run-time code block in regular expressions |
138 | ||
139 | Code blocks in regular expressions (C<(?{...})> and C<(??{...})>) used not | |
140 | to inherit any pragmata (strict, warnings, etc.) if the regular expression | |
141 | was compiled at run time as happens in cases like these two: | |
142 | ||
143 | use re 'eval'; | |
144 | $foo =~ $bar; # when $bar contains (?{...}) | |
145 | $foo =~ /$bar(?{ $finished = 1 })/; | |
146 | ||
147 | This was a bug, which has now been fixed. But it has the potential to break | |
148 | any code that was relying on this bug. | |
149 | ||
3a5c9134 CBW |
150 | =head1 Deprecations |
151 | ||
152 | XXX Any deprecated features, syntax, modules etc. should be listed here. | |
153 | In particular, deprecated modules should be listed here even if they are | |
154 | listed as an updated module in the L</Modules and Pragmata> section. | |
155 | ||
156 | [ List each deprecation as a =head2 entry ] | |
157 | ||
59773fc7 FC |
158 | =head2 C<?PATTERN?> is deprecated |
159 | ||
160 | C<?PATTERN?> (without the initial m) has been deprecated and now produces | |
161 | a warning. | |
162 | ||
d59a8b3e NC |
163 | =head2 C<sv_compile_2op> is now deprecated |
164 | ||
165 | The C<sv_compile_2op> is now deprecated, and will be removed. Searches suggest | |
166 | that nothing on CPAN is using it, so this should have zero impact. | |
167 | ||
168 | It attempted to provide an API to compile code down to an optree, but failed | |
169 | to bind correctly to lexicals in the enclosing scope. It's not possible to | |
170 | fix this problem within the constraints of its parameters and return value. | |
171 | ||
5609d5f9 FC |
172 | =head2 Tie functions on scalars holding typeglobs |
173 | ||
174 | Calling a tie function (C<tie>, C<tied>, C<untie>) with a scalar argument | |
175 | acts on a file handle if the scalar happens to hold a typeglob. | |
176 | ||
177 | This is a long-standing bug that will be removed in Perl 5.16, as | |
178 | there is currently no way to tie the scalar itself when it holds | |
179 | a typeglob, and no way to untie a scalar that has had a typeglob | |
180 | assigned to it. | |
181 | ||
182 | This bug was fixed in 5.13.7 but, because of the breakage it caused, the | |
183 | fix has been reverted. Now there is a deprecation warning whenever a tie | |
184 | function is used on a handle without an explicit C<*>. | |
185 | ||
3a5c9134 CBW |
186 | =head1 Performance Enhancements |
187 | ||
188 | XXX Changes which enhance performance without changing behaviour go here. There | |
189 | may well be none in a stable release. | |
190 | ||
191 | [ List each enhancement as a =item entry ] | |
192 | ||
193 | =over 4 | |
194 | ||
195 | =item * | |
196 | ||
197 | XXX | |
198 | ||
199 | =back | |
200 | ||
201 | =head1 Modules and Pragmata | |
202 | ||
203 | XXX All changes to installed files in F<cpan/>, F<dist/>, F<ext/> and F<lib/> | |
204 | go here. If Module::CoreList is updated, generate an initial draft of the | |
205 | following sections using F<Porting/corelist-perldelta.pl>, which prints stub | |
206 | entries to STDOUT. Results can be pasted in place of the '=head2' entries | |
207 | below. A paragraph summary for important changes should then be added by hand. | |
208 | In an ideal world, dual-life modules would have a F<Changes> file that could be | |
209 | cribbed. | |
210 | ||
211 | [ Within each section, list entries as a =item entry ] | |
212 | ||
213 | =head2 New Modules and Pragmata | |
214 | ||
215 | =over 4 | |
216 | ||
217 | =item * | |
218 | ||
219 | XXX | |
220 | ||
221 | =back | |
222 | ||
223 | =head2 Updated Modules and Pragmata | |
224 | ||
225 | =over 4 | |
226 | ||
227 | =item * | |
228 | ||
0a178734 CBW |
229 | C<Digest::SHA> has been upgraded from 5.48 to 5.49 |
230 | ||
231 | shasum now more closely mimics sha1sum/md5sum and Addfile | |
232 | accepts all POSIX filenames. | |
233 | ||
234 | =item * | |
235 | ||
d3413324 | 236 | C<ExtUtils::CBuilder> has been upgraded from 0.2703 to 0.2802 |
06e8058f CBW |
237 | |
238 | =item * | |
239 | ||
11f2b7f3 FR |
240 | C<if> has been upgraded from 0.06 to 0.0601. |
241 | ||
242 | =item * | |
243 | ||
92c0bb90 FR |
244 | C<Devel::SelfStubber> has been upgraded from version 1.03 to 1.04. |
245 | ||
246 | =item * | |
247 | ||
39b09a1b CBW |
248 | C<IPC::Cmd> has been upgraded from 0.64 to 0.66 |
249 | ||
250 | Resolves an issue with splitting Win32 command lines | |
251 | and documentation enhancements. | |
252 | ||
253 | =item * | |
254 | ||
1245abf1 CBW |
255 | C<Locale::Codes> has been upgraded from version 3.14 to 3.15 |
256 | ||
257 | =item * | |
258 | ||
28502098 FR |
259 | C<Memoize> has been upgraded from version 1.01_03 to 1.02. |
260 | ||
261 | =item * | |
262 | ||
37fa6334 | 263 | C<MIME::Base64> has been upgraded from 3.10 to 3.13 |
2456140e CBW |
264 | |
265 | Now provides encode_base64url and decode_base64url functions to process | |
266 | the base64 scheme for "URL applications". | |
267 | ||
268 | =item * | |
269 | ||
ad033849 FC |
270 | C<mro> has been upgraded from version 1.05 to 1.06. |
271 | ||
272 | C<next::method> I<et al.> now take into account that every class inherits | |
273 | from UNIVERSAL | |
274 | L<[perl #68654]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=68654>. | |
275 | ||
276 | =item * | |
277 | ||
2638c0ff FC |
278 | C<overload> has been upgraded from 1.11 to 1.12. |
279 | ||
280 | =item * | |
281 | ||
282 | C<PerlIO::scalar> has been upgraded from 0.10 to 0.11. | |
283 | ||
284 | A C<read> after a C<seek> beyond the end of the string no longer thinks it | |
285 | has data to read | |
286 | L<[perl #78716]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78716>. | |
287 | ||
288 | =item * | |
289 | ||
f295f417 FC |
290 | C<re> has been upgraded from 0.14 to 0.15. |
291 | ||
292 | =item * | |
293 | ||
5ebfb99c | 294 | C<Socket> has been upgraded from 1.91 to 1.92. |
b373eab8 FC |
295 | |
296 | It has several new functions for handling IPv6 addresses. | |
297 | ||
298 | =item * | |
299 | ||
b6ae81ab DL |
300 | C<Storable> has been upgraded from 2.24 to 2.25. |
301 | ||
302 | This adds support for serialising code references that contain UTF-8 strings | |
303 | correctly. The Storable minor version number changed as a result -- this means | |
304 | Storable users that set C<$Storable::accept_future_minor> to a C<FALSE> value | |
305 | will see errors (see L<Storable/FORWARD COMPATIBILITY> for more details). | |
306 | ||
307 | =item * | |
308 | ||
d4238815 FC |
309 | C<Time::HiRes> has been upgraded from 1.9721 to 1.9721_01. |
310 | ||
311 | =item * | |
312 | ||
68adb2b0 CBW |
313 | C<Unicode::Collate> has been upgraded from 0.67 to 0.68 |
314 | ||
315 | =item * | |
316 | ||
59773fc7 | 317 | C<Unicode::UCD> has been upgraded from 0.29 to 0.30. |
3a5c9134 | 318 | |
c2e0289e FC |
319 | =item * |
320 | ||
321 | C<version> has been upgraded from 0.82 to 0.86. | |
322 | ||
e6f1cc4d FC |
323 | =item * |
324 | ||
325 | C<Win32> has been upgraded from 0.039 to 0.040. | |
326 | ||
3a5c9134 CBW |
327 | =back |
328 | ||
329 | =head2 Removed Modules and Pragmata | |
330 | ||
331 | =over 4 | |
332 | ||
333 | =item * | |
334 | ||
335 | XXX | |
336 | ||
337 | =back | |
338 | ||
339 | =head1 Documentation | |
340 | ||
341 | XXX Changes to files in F<pod/> go here. Consider grouping entries by | |
342 | file and be sure to link to the appropriate page, e.g. L<perlfunc>. | |
343 | ||
344 | =head2 New Documentation | |
345 | ||
346 | XXX Changes which create B<new> files in F<pod/> go here. | |
347 | ||
348 | =head3 L<XXX> | |
349 | ||
350 | XXX Description of the purpose of the new file here | |
351 | ||
352 | =head2 Changes to Existing Documentation | |
353 | ||
354 | XXX Changes which significantly change existing files in F<pod/> go here. | |
355 | However, any changes to F<pod/perldiag.pod> should go in the L</Diagnostics> | |
356 | section. | |
357 | ||
358 | =head3 L<XXX> | |
359 | ||
360 | =over 4 | |
361 | ||
362 | =item * | |
363 | ||
364 | XXX Description of the change here | |
365 | ||
366 | =back | |
367 | ||
368 | =head1 Diagnostics | |
369 | ||
370 | The following additions or changes have been made to diagnostic output, | |
371 | including warnings and fatal error messages. For the complete list of | |
372 | diagnostic messages, see L<perldiag>. | |
373 | ||
374 | XXX New or changed warnings emitted by the core's C<C> code go here. Also | |
375 | include any changes in L<perldiag> that reconcile it to the C<C> code. | |
376 | ||
377 | [ Within each section, list entries as a =item entry ] | |
378 | ||
379 | =head2 New Diagnostics | |
380 | ||
381 | XXX Newly added diagnostic messages go here | |
382 | ||
383 | =over 4 | |
384 | ||
385 | =item * | |
386 | ||
4d4ca6a5 | 387 | There is a new "Closure prototype called" error. |
3a5c9134 CBW |
388 | |
389 | =back | |
390 | ||
391 | =head2 Changes to Existing Diagnostics | |
392 | ||
393 | XXX Changes (i.e. rewording) of diagnostic messages go here | |
394 | ||
395 | =over 4 | |
396 | ||
397 | =item * | |
398 | ||
c6008483 FC |
399 | The "Found = in conditional" warning that is emitted when a constant is |
400 | assigned to a variable in a condition is now withheld if the constant is | |
401 | actually a subroutine or one generated by C<use constant>, since the value | |
402 | of the constant may not be known at the time the program is written | |
403 | L<[perl #77762]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=77762>. | |
3a5c9134 CBW |
404 | |
405 | =back | |
406 | ||
407 | =head1 Utility Changes | |
408 | ||
409 | XXX Changes to installed programs such as F<perlbug> and F<xsubpp> go | |
410 | here. Most of these are built within the directories F<utils> and F<x2p>. | |
411 | ||
412 | [ List utility changes as a =head3 entry for each utility and =item | |
413 | entries for each change | |
414 | Use L<XXX> with program names to get proper documentation linking. ] | |
415 | ||
416 | =head3 L<XXX> | |
417 | ||
418 | =over 4 | |
419 | ||
420 | =item * | |
421 | ||
422 | XXX | |
423 | ||
424 | =back | |
425 | ||
426 | =head1 Configuration and Compilation | |
427 | ||
428 | XXX Changes to F<Configure>, F<installperl>, F<installman>, and analogous tools | |
429 | go here. Any other changes to the Perl build process should be listed here. | |
430 | However, any platform-specific changes should be listed in the | |
431 | L</Platform Support> section, instead. | |
432 | ||
433 | [ List changes as a =item entry ]. | |
434 | ||
435 | =over 4 | |
436 | ||
437 | =item * | |
438 | ||
439 | XXX | |
440 | ||
441 | =back | |
442 | ||
443 | =head1 Testing | |
444 | ||
445 | XXX Any significant changes to the testing of a freshly built perl should be | |
446 | listed here. Changes which create B<new> files in F<t/> go here as do any | |
447 | large changes to the testing harness (e.g. when parallel testing was added). | |
448 | Changes to existing files in F<t/> aren't worth summarising, although the bugs | |
449 | that they represent may be covered elsewhere. | |
450 | ||
451 | [ List each test improvement as a =item entry ] | |
452 | ||
453 | =over 4 | |
454 | ||
455 | =item * | |
456 | ||
457 | XXX | |
458 | ||
459 | =back | |
460 | ||
461 | =head1 Platform Support | |
462 | ||
463 | XXX Any changes to platform support should be listed in the sections below. | |
464 | ||
465 | [ Within the sections, list each platform as a =item entry with specific | |
466 | changes as paragraphs below it. ] | |
467 | ||
468 | =head2 New Platforms | |
469 | ||
470 | XXX List any platforms that this version of perl compiles on, that previous | |
471 | versions did not. These will either be enabled by new files in the F<hints/> | |
472 | directories, or new subdirectories and F<README> files at the top level of the | |
473 | source tree. | |
474 | ||
475 | =over 4 | |
476 | ||
477 | =item XXX-some-platform | |
478 | ||
479 | XXX | |
480 | ||
481 | =back | |
482 | ||
483 | =head2 Discontinued Platforms | |
484 | ||
485 | XXX List any platforms that this version of perl no longer compiles on. | |
486 | ||
487 | =over 4 | |
488 | ||
489 | =item XXX-some-platform | |
490 | ||
491 | XXX | |
492 | ||
493 | =back | |
494 | ||
495 | =head2 Platform-Specific Notes | |
496 | ||
497 | XXX List any changes for specific platforms. This could include configuration | |
498 | and compilation changes or changes in portability/compatibility. However, | |
499 | changes within modules for platforms should generally be listed in the | |
500 | L</Modules and Pragmata> section. | |
501 | ||
502 | =over 4 | |
503 | ||
085d0904 | 504 | =item NetBSD |
3a5c9134 | 505 | |
085d0904 FC |
506 | The NetBSD hints file has been changed to make the system's malloc the |
507 | default. | |
3a5c9134 CBW |
508 | |
509 | =back | |
510 | ||
511 | =head1 Internal Changes | |
512 | ||
513 | XXX Changes which affect the interface available to C<XS> code go here. | |
514 | Other significant internal changes for future core maintainers should | |
515 | be noted as well. | |
516 | ||
517 | [ List each test improvement as a =item entry ] | |
518 | ||
519 | =over 4 | |
520 | ||
521 | =item * | |
522 | ||
833f1b93 FR |
523 | C<mg_findext> and C<sv_unmagicext> have been added. |
524 | ||
525 | These new functions allow extension authors to find and remove magic attached to | |
526 | scalars based on both the magic type and the magic virtual table, similar to how | |
527 | C<sv_magicext> attaches magic of a certain type and with a given virtual table | |
528 | to a scalar. This eliminates the need for extensions to walk the list of | |
529 | C<MAGIC> pointers of an C<SV> to find the magic that belongs to them. | |
3a5c9134 | 530 | |
c61b6d0f FC |
531 | =item * |
532 | ||
533 | The C<parse_fullexpr()>, C<parse_listexpr(), C<parse_termexpr()> and | |
534 | C<parse_arithexpr()> functions have been added. | |
535 | ||
536 | These are for parsing expressions at various precedence levels. | |
537 | ||
3a5c9134 CBW |
538 | =back |
539 | ||
540 | =head1 Selected Bug Fixes | |
541 | ||
542 | XXX Important bug fixes in the core language are summarised here. | |
543 | Bug fixes in files in F<ext/> and F<lib/> are best summarised in | |
544 | L</Modules and Pragmata>. | |
545 | ||
546 | [ List each fix as a =item entry ] | |
547 | ||
548 | =over 4 | |
549 | ||
550 | =item * | |
551 | ||
88e9444c NC |
552 | C<BEGIN {require 5.12.0}> now behaves as documented, rather than behaving |
553 | identically to C<use 5.12.0;>. Previously, C<require> in a C<BEGIN> block | |
554 | was erroneously executing the C<use feature ':5.12.0'> and | |
555 | C<use strict; use warnings;> behaviour, which only C<use> was documented to | |
b373eab8 FC |
556 | provide |
557 | L<[perl #69050]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=69050>. | |
558 | ||
559 | =item * | |
560 | ||
561 | C<use 5.42> | |
562 | L<[perl #69050]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=69050>, | |
563 | C<use 6> and C<no 5> no longer leak memory. | |
564 | ||
565 | =item * | |
566 | ||
567 | C<eval "BEGIN{die}"> no longer leaks memory on non-threaded builds. | |
3a5c9134 | 568 | |
1428a560 FC |
569 | =item * |
570 | ||
571 | PerlIO no longer crashes when called recursively, e.g., from a signal | |
572 | handler. Now it just leaks memory | |
573 | L<[perl #75556]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=75556>. | |
574 | ||
11cd2234 FC |
575 | =item * |
576 | ||
577 | Defining a constant with the same name as one of perl's special blocks | |
578 | (e.g., INIT) stopped working in 5.12.0, but has now been fixed | |
579 | L<[perl #78634]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78634>. | |
580 | ||
e3ef43a5 FC |
581 | =item * |
582 | ||
583 | A reference to a literal value used as a hash key (C<$hash{\"foo"}>) used | |
584 | to be stringified, even if the hash was tied | |
585 | L<[perl #79178]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=79178>. | |
586 | ||
3ad6135d FC |
587 | =item * |
588 | ||
3ad6135d FC |
589 | A closure containing an C<if> statement followed by a constant or variable |
590 | is no longer treated as a constant | |
591 | L<[perl #63540]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=63540>. | |
592 | ||
4d4ca6a5 FC |
593 | =item * |
594 | ||
595 | Calling a closure prototype (what is passed to an attribute handler for a | |
7cdf3308 FC |
596 | closure) now results in a "Closure prototype called" error message instead |
597 | of a crash | |
4d4ca6a5 FC |
598 | L<[perl #68560]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=68560>. |
599 | ||
085d0904 FC |
600 | =item * |
601 | ||
602 | A regular expression optimisation would sometimes cause a match with a | |
603 | C<{n,m}> quantifier to fail when it should match | |
604 | L<[perl #79152]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=79152>. | |
605 | ||
20db7501 KW |
606 | =item * |
607 | ||
608 | What has become known as the "Unicode Bug" is resolved in this release. | |
609 | Under C<use feature 'unicode_strings'>, the internal storage format of a | |
610 | string no longer affects the external semantics. There are two known | |
611 | exceptions. User-defined case changing functions, which are planned to | |
612 | be deprecated in 5.14, require utf8-encoded strings to function; and the | |
613 | character C<LATIN SMALL LETTER SHARP S> in regular expression | |
614 | case-insensitive matching has a somewhat different set of bugs depending | |
615 | on the internal storage format. Case-insensitive matching of all | |
616 | characters that have multi-character matches, as this one does, is | |
617 | problematical in Perl. | |
618 | L<[perl #58182]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=58182>. | |
619 | ||
70bfa48a FC |
620 | =item * |
621 | ||
622 | Mentioning a read-only lexical variable from the enclosing scope in a | |
623 | string C<eval> would cause the variable to become writable | |
624 | L<[perl #19135]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=19135>. | |
625 | ||
f853e70a FC |
626 | =item * |
627 | ||
628 | C<state> can now be used with attributes. It used to mean the same thing as | |
629 | C<my> if attributes were present | |
630 | L<[perl #68658]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=68658>. | |
631 | ||
37079308 FC |
632 | =item * |
633 | ||
634 | Expressions like C<< @$a > 3 >> no longer cause C<$a> to be mentioned in | |
635 | the "Use of uninitialized value in numeric gt" warning when C<$a> is | |
636 | undefined (since it is not part of the C<E<gt>> expression, but the operand | |
637 | of the C<@>) | |
638 | L<[perl #72090]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=72090>. | |
639 | ||
4c9d53d5 FC |
640 | =item * |
641 | ||
642 | C<require> no longer causes C<caller> to return the wrong file name for | |
643 | the scope that called C<require> and other scopes higher up that had the | |
644 | same file name | |
645 | L<[perl #68712]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=68712>. | |
646 | ||
0c7420e7 FC |
647 | =item * |
648 | ||
7cdf3308 | 649 | The ref types in the typemap for XS bindings now support magical variables |
0c7420e7 FC |
650 | L<[perl #72684]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=72684>. |
651 | ||
460c4bfb FC |
652 | =item * |
653 | ||
654 | Match variables (e.g., C<$1>) no longer persist between calls to a sort | |
655 | subroutine | |
656 | L<[perl #76026]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=76026>. | |
657 | ||
26de4ac8 FC |
658 | =item * |
659 | ||
660 | The C<B> module was returning B::OPs instead of B::LOGOPs for C<entertry> | |
661 | L<[perl #80622]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=80622>. | |
662 | ||
663 | This was due to a bug in the perl core, not in C<B> itself. | |
664 | ||
3a5c9134 CBW |
665 | =back |
666 | ||
667 | =head1 Known Problems | |
668 | ||
669 | XXX Descriptions of platform agnostic bugs we know we can't fix go here. Any | |
670 | tests that had to be C<TODO>ed for the release would be noted here, unless | |
671 | they were specific to a particular platform (see below). | |
672 | ||
673 | This is a list of some significant unfixed bugs, which are regressions | |
674 | from either 5.XXX.XXX or 5.XXX.XXX. | |
675 | ||
676 | [ List each fix as a =item entry ] | |
677 | ||
678 | =over 4 | |
679 | ||
680 | =item * | |
681 | ||
3ad6135d | 682 | XXX |
3a5c9134 CBW |
683 | |
684 | =back | |
685 | ||
686 | =head1 Obituary | |
687 | ||
688 | XXX If any significant core contributor has died, we've added a short obituary | |
689 | here. | |
690 | ||
691 | =head1 Acknowledgements | |
692 | ||
693 | XXX The list of people to thank goes here. | |
694 | ||
695 | =head1 Reporting Bugs | |
696 | ||
697 | If you find what you think is a bug, you might check the articles | |
698 | recently posted to the comp.lang.perl.misc newsgroup and the perl | |
699 | bug database at http://rt.perl.org/perlbug/ . There may also be | |
700 | information at http://www.perl.org/ , the Perl Home Page. | |
701 | ||
702 | If you believe you have an unreported bug, please run the L<perlbug> | |
703 | program included with your release. Be sure to trim your bug down | |
704 | to a tiny but sufficient test case. Your bug report, along with the | |
705 | output of C<perl -V>, will be sent off to perlbug@perl.org to be | |
706 | analysed by the Perl porting team. | |
707 | ||
708 | If the bug you are reporting has security implications, which make it | |
709 | inappropriate to send to a publicly archived mailing list, then please send | |
710 | it to perl5-security-report@perl.org. This points to a closed subscription | |
711 | unarchived mailing list, which includes all the core committers, who be able | |
712 | to help assess the impact of issues, figure out a resolution, and help | |
713 | co-ordinate the release of patches to mitigate or fix the problem across all | |
714 | platforms on which Perl is supported. Please only use this address for | |
715 | security issues in the Perl core, not for modules independently | |
716 | distributed on CPAN. | |
717 | ||
718 | =head1 SEE ALSO | |
719 | ||
720 | The F<Changes> file for an explanation of how to view exhaustive details | |
721 | on what changed. | |
722 | ||
723 | The F<INSTALL> file for how to build Perl. | |
724 | ||
725 | The F<README> file for general stuff. | |
726 | ||
727 | The F<Artistic> and F<Copying> files for copyright information. | |
728 | ||
729 | =cut |