| 1 | =encoding utf8 |
| 2 | |
| 3 | =head1 NAME |
| 4 | |
| 5 | perldelta - what is new for perl v5.15.0 |
| 6 | |
| 7 | =head1 DESCRIPTION |
| 8 | |
| 9 | This document describes differences between the 5.15.0 release and |
| 10 | the 5.14.0 release. |
| 11 | |
| 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 |
| 14 | 5.14.0. |
| 15 | |
| 16 | Some of the changes have been included in Perl 5.14.1. These are |
| 17 | indicated with a "(5.14.1)" marker. |
| 18 | |
| 19 | =head1 Core Enhancements |
| 20 | |
| 21 | =head2 C<CORE::> works on all keywords |
| 22 | |
| 23 | The C<CORE::> prefix can now be used on keywords enabled by |
| 24 | L<feature.pm|feature>, even outside the scope of C<use feature>. Relevant |
| 25 | documentation files L<CORE>, L<feature>, L<perlfunc>, L<perlsub>, and |
| 26 | L<perlsyn> have been updated. |
| 27 | |
| 28 | =head2 C<continue> no longer requires the "switch" feature |
| 29 | |
| 30 | The C<continue> keyword has two meanings. It can introduce a C<continue> |
| 31 | block after a loop, or it can exit the current C<when> block. Up till now, |
| 32 | the latter meaning was only valid with the "switch" feature enabled, and |
| 33 | was a syntax error otherwise. Since the main purpose of feature.pm is to |
| 34 | avoid conflicts with user-defined subroutines, there is no reason for |
| 35 | C<continue> to depend on it. |
| 36 | |
| 37 | =head2 C<$$> can be assigned to |
| 38 | |
| 39 | C<$$> was made read-only in Perl 5.8.0. But only sometimes: C<local $$> |
| 40 | would make it writable again. Some CPAN modules were using C<local $$> or |
| 41 | XS code to bypass the read-only check, so there is no reason to keep C<$$> |
| 42 | read-only. (This change also allowed a bug to be fixed while maintaining |
| 43 | backward compatibility.) |
| 44 | |
| 45 | =head2 Features inside the debugger |
| 46 | |
| 47 | The current Perl's feature bundle is now enabled for commands entered in |
| 48 | the interactive debugger. |
| 49 | |
| 50 | =head2 C<\N{...}> can now have Unicode loose name matching |
| 51 | |
| 52 | This is described in the C<charnames> item in |
| 53 | L</Updated Modules and Pragmata> below. |
| 54 | |
| 55 | =head2 Breakpoints with file names |
| 56 | |
| 57 | The debugger's "b" command for setting breakpoints now allows a line number |
| 58 | to be prefixed with a file name. See |
| 59 | L<perldebug/"b [file]:[line] [condition]">. |
| 60 | |
| 61 | =head1 Security |
| 62 | |
| 63 | No changes since 5.14.0. |
| 64 | |
| 65 | =head1 Incompatible Changes |
| 66 | |
| 67 | =head2 Tying scalars that hold typeglobs |
| 68 | |
| 69 | Attempting to tie a scalar after a typeglob was assigned to it would |
| 70 | instead tie the handle in the typeglob's IO slot. This meant that it was |
| 71 | impossible to tie the scalar itself. Similar problems affected C<tied> and |
| 72 | C<untie>: C<tied $scalar> would return false on a tied scalar if the last |
| 73 | thing returned was a typeglob, and C<untie $scalar> on such a tied scalar |
| 74 | would do nothing. |
| 75 | |
| 76 | We fixed this problem before Perl 5.14.0, but it caused problems with some |
| 77 | CPAN modules, so we put in a deprecation cycle instead. |
| 78 | |
| 79 | Now the deprecation has been removed and this bug has been fixed. So |
| 80 | C<tie $scalar> will always tie the scalar, not the handle it holds. To tie |
| 81 | the handle, use C<tie *$scalar> (with an explicit asterisk). The same |
| 82 | applies to C<tied *$scalar> and C<untie *$scalar>. |
| 83 | |
| 84 | =head2 IPC::Open3 no longer provides C<xfork()>, C<xclose_on_exec()> |
| 85 | and C<xpipe_anon()> |
| 86 | |
| 87 | All three functions were private, undocumented and unexported. They do |
| 88 | not appear to be used by any code on CPAN. Two have been inlined and one |
| 89 | deleted entirely. |
| 90 | |
| 91 | =head2 C<$$> no longer caches PID |
| 92 | |
| 93 | Previously, if one embeds Perl or uses XS and calls fork(3) from C, Perls |
| 94 | notion of C<$$> could go out of sync with what getpid() returns. By always |
| 95 | fetching the value of C<$$> via getpid(), this potential bug is eliminated. |
| 96 | Code that depends on the caching behavior will break. As described in |
| 97 | L</Core Enhancements>, C<$$> is now writable, but it will be reset during a |
| 98 | fork. |
| 99 | |
| 100 | =head1 Deprecations |
| 101 | |
| 102 | There have been no deprecations since 5.14.0. |
| 103 | |
| 104 | =head1 Performance Enhancements |
| 105 | |
| 106 | There are no benchmarked enhancements since 5.14.0. |
| 107 | |
| 108 | =head1 Modules and Pragmata |
| 109 | |
| 110 | =head2 New Modules and Pragmata |
| 111 | |
| 112 | None. |
| 113 | |
| 114 | =head2 Updated Modules and Pragmata |
| 115 | |
| 116 | =over 4 |
| 117 | |
| 118 | =item * |
| 119 | |
| 120 | L<charnames> has been updated from version 1.18 to version 1.22 |
| 121 | |
| 122 | L<charnames> can now be invoked with a new option, C<:loose>, |
| 123 | which is like the existing C<:full> option, but enables Unicode loose |
| 124 | name matching. Details are in L<charnames/LOOSE MATCHES>. |
| 125 | |
| 126 | =item * |
| 127 | |
| 128 | L<constant> has been updated from version 1.21 to 1.22. |
| 129 | |
| 130 | =item * |
| 131 | |
| 132 | L<Archive::Extract> has been upgraded from version 0.48 to version 0.52 |
| 133 | |
| 134 | Includes a fix for FreeBSD to only use C<unzip> if it is located in |
| 135 | C</usr/local/bin>, as FreeBSD 9.0 will ship with a limited C<unzip> in |
| 136 | C</usr/bin>. |
| 137 | |
| 138 | =item * |
| 139 | |
| 140 | L<Attribute::Handlers> updated from version 0.88 to 0.91 |
| 141 | |
| 142 | =item * |
| 143 | |
| 144 | L<B> has been upgraded from version 1.29 to version 1.30. |
| 145 | |
| 146 | =item * |
| 147 | |
| 148 | L<B::Deparse> has been upgraded from version 1.03 to 1.05. (Perl 5.14.1 |
| 149 | had version 1.04.) |
| 150 | |
| 151 | It addresses two regressions in Perl 5.14.0: |
| 152 | |
| 153 | =over |
| 154 | |
| 155 | =item * |
| 156 | |
| 157 | Deparsing of the C<glob> operator and its diamond (C<< <> >>) form now |
| 158 | works again [perl #90898] (5.14.1). |
| 159 | |
| 160 | =item * |
| 161 | |
| 162 | The presence of subroutines named C<::::> or C<::::::> no longer causes |
| 163 | B::Deparse to hang (5.14.1). |
| 164 | |
| 165 | =back |
| 166 | |
| 167 | Plus a few other bugs: |
| 168 | |
| 169 | =over |
| 170 | |
| 171 | =item * |
| 172 | |
| 173 | Deparsing of handle C<keys>, C<each> and C<value> with a scalar argument |
| 174 | now works [perl #91008]. |
| 175 | |
| 176 | =item * |
| 177 | |
| 178 | C<readpipe> followed by a complex expression (as opposed to a simple scalar |
| 179 | variable) now works. |
| 180 | |
| 181 | =item * |
| 182 | |
| 183 | It now puts C<CORE::> in front of overridable core keywords if they |
| 184 | conflict with user-defined subroutines. |
| 185 | |
| 186 | =item * |
| 187 | |
| 188 | Deparsing assignment to an lvalue method specified as a variable |
| 189 | (C<< $obj->$method = ... >>) used not to work [perl #62498]. |
| 190 | |
| 191 | =back |
| 192 | |
| 193 | =item * |
| 194 | |
| 195 | L<CGI> has been upgraded from version 3.52 to version 3.54 |
| 196 | |
| 197 | The DELETE HTTP verb is now supported. |
| 198 | |
| 199 | =item * |
| 200 | |
| 201 | L<Compress::Zlib> has been upgraded from version 2.033 to version 2.035 |
| 202 | |
| 203 | =item * |
| 204 | |
| 205 | L<Compress::Raw::Bzip2> has been upgraded from version 2.033 to version 2.035 |
| 206 | |
| 207 | =item * |
| 208 | |
| 209 | L<Compress::Raw::Zlib> has been upgraded from version 2.033 to version 2.035 |
| 210 | |
| 211 | =item * |
| 212 | |
| 213 | L<CPAN::Meta> has been upgraded from version 2.110440 to version 2.110930 |
| 214 | |
| 215 | =item * |
| 216 | |
| 217 | L<CPANPLUS> has been upgraded from version 0.9103 to version 0.9105 |
| 218 | |
| 219 | Now understands specifying modules to install in the format 'Module/Type.pm' |
| 220 | |
| 221 | =item * |
| 222 | |
| 223 | L<CPANPLUS::Dist::Build> has been upgraded from version 0.54 to version 0.56 |
| 224 | |
| 225 | =item * |
| 226 | |
| 227 | L<Data::Dumper> has been upgraded from version 2.128 to 2.131. |
| 228 | |
| 229 | =item * |
| 230 | |
| 231 | L<DB_File> has been upgraded from version 1.821 to version 1.822 |
| 232 | |
| 233 | Warnings are now in sync with perl's |
| 234 | |
| 235 | =item * |
| 236 | |
| 237 | L<Digest::SHA> has been upgraded from version 5.61 to version 5.62 |
| 238 | |
| 239 | No longer loads L<MIME::Base64> as this was unnecessary. |
| 240 | |
| 241 | =item * |
| 242 | |
| 243 | L<Devel::Peek> has been upgraded from version 1.07 to 1.08. |
| 244 | |
| 245 | Its C<fill_mstats> function no longer refuses to write to copy-on-write |
| 246 | scalars. |
| 247 | |
| 248 | =item * |
| 249 | |
| 250 | L<Encode> has been upgraded from version 2.42 to version 2.43 |
| 251 | |
| 252 | Missing aliases added, a deep recursion error fixed and various |
| 253 | documentation updates. |
| 254 | |
| 255 | =item * |
| 256 | |
| 257 | L<ExtUtils::CBuilder> updated from version 0.280203 to 0.280204. |
| 258 | |
| 259 | The new version appends CFLAGS and LDFLAGS to their Config.pm |
| 260 | counterparts. |
| 261 | |
| 262 | =item * |
| 263 | |
| 264 | L<Filter::Util::Call> has been upgraded from version 1.08 to version 1.39 |
| 265 | |
| 266 | C<decrypt> fixed to work with v5.14.0 |
| 267 | |
| 268 | =item * |
| 269 | |
| 270 | L<Filter::Simple> updated from version 0.85 to 0.87 |
| 271 | |
| 272 | =item * |
| 273 | |
| 274 | L<FindBin> updated from version 1.50 to 1.51. |
| 275 | |
| 276 | It no longer returns a wrong result if a script of the same name as the |
| 277 | current one exists in the path and is executable. |
| 278 | |
| 279 | =item * |
| 280 | |
| 281 | L<JSON::PP> has been upgraded from version 2.27105 to version 2.27200 |
| 282 | |
| 283 | Fixed C<incr_parse> decoding string more correctly. |
| 284 | |
| 285 | =item * |
| 286 | |
| 287 | L<I18N::LangTags> has been upgraded from version 0.35_01 to version 0.36. |
| 288 | |
| 289 | Fix broken URLs for RFCs. |
| 290 | |
| 291 | =item * |
| 292 | |
| 293 | L<IPC::Open3> has been upgraded from version 1.10 to version 1.11. |
| 294 | |
| 295 | =over 4 |
| 296 | |
| 297 | =item * |
| 298 | |
| 299 | Fixes a bug which prevented use of C<open3> on Windows when C<*STDIN>, |
| 300 | C<*STDOUT> or C<*STDERR> had been localized. |
| 301 | |
| 302 | =item * |
| 303 | |
| 304 | Fixes a bug which prevented duplicating numeric file descriptors on Windows. |
| 305 | |
| 306 | =back |
| 307 | |
| 308 | =item * |
| 309 | |
| 310 | L<Math::BigFloat> has been upgraded from version 1.993 to 1.994. |
| 311 | |
| 312 | The C<numify> method has been corrected to return a normalised Perl number |
| 313 | (the result of C<0 + $thing>), instead of a string [rt.cpan.org #66732]. |
| 314 | |
| 315 | =item * |
| 316 | |
| 317 | L<Math::BigInt> has been upgraded from version 1.994 to 1.995. |
| 318 | |
| 319 | It provides a new C<bsgn> method that complements the C<babs> method. |
| 320 | |
| 321 | It fixes the internal C<objectify> function's handling of "foreign objects" |
| 322 | so they are converted to the appropriate class (Math::BigInt or |
| 323 | Math::BigFloat). |
| 324 | |
| 325 | =item * |
| 326 | |
| 327 | L<Math::Complex> has been upgraded from version 1.56 to version 1.57 |
| 328 | and L<Math::Trig> has been upgraded from version 1.20 to version 1.21. |
| 329 | |
| 330 | Fixes include: correct copy constructor usage; fix polarwise formatting with |
| 331 | numeric format specifier; and more stable C<great_circle_direction> algorithm. |
| 332 | |
| 333 | =item * |
| 334 | |
| 335 | L<Module::CoreList> has been upgraded from version 2.49 to 2.51. |
| 336 | |
| 337 | Updated for v5.12.4, v5.14.1 and v5.15.0 |
| 338 | |
| 339 | =item * |
| 340 | |
| 341 | L<mro> has been updated to remove two broken URLs in the documentation. |
| 342 | |
| 343 | =item * |
| 344 | |
| 345 | L<Object::Accessor> has been upgraded from version 0.38 to version 0.42 |
| 346 | |
| 347 | Eliminated use of C<exists> on array elements which has been deprecated. |
| 348 | |
| 349 | =item * |
| 350 | |
| 351 | L<ODBM_File> has been upgraded from version 1.10 to version 1.11. |
| 352 | |
| 353 | The XS code is now compiled with C<PERL_NO_GET_CONTEXT>, which will aid |
| 354 | performance under ithreads. |
| 355 | |
| 356 | =item * |
| 357 | |
| 358 | L<PerlIO::encoding> has been upgraded from version 0.14 to 0.15 |
| 359 | |
| 360 | =item * |
| 361 | |
| 362 | L<PerlIO::scalar> has been upgraded from version 0.11 to 0.12. |
| 363 | |
| 364 | It fixes a problem with C<< open my $fh, ">", \$scalar >> not working if |
| 365 | C<$scalar> is a copy-on-write scalar. |
| 366 | |
| 367 | It also fixes a hang that occurs with C<readline> or C<< <$fh> >> if a |
| 368 | typeglob has been assigned to $scalar [perl #92258]. |
| 369 | |
| 370 | =item * |
| 371 | |
| 372 | L<Pod::Perldoc> has been upgraded from version 3.15_03 to 3.15_05. |
| 373 | |
| 374 | It corrects the search paths on VMS [perl #90640]. (5.14.1) |
| 375 | |
| 376 | =item * |
| 377 | |
| 378 | L<Storable> has been upgraded from version 2.27 to version 2.28. |
| 379 | |
| 380 | It no longer turns copy-on-write scalars into read-only scalars when |
| 381 | freezing and thawing. |
| 382 | |
| 383 | =item * |
| 384 | |
| 385 | L<Sys::Syslog> has been upgraded from version 0.27 to version 0.29 |
| 386 | |
| 387 | Large number of Request Tickets resolved. |
| 388 | |
| 389 | =item * |
| 390 | |
| 391 | L<Time::HiRes> has been upgraded from version 1.9721_01 to version 1.9722. |
| 392 | |
| 393 | Portability fix, and avoiding some compiler warnings. |
| 394 | |
| 395 | =item * |
| 396 | |
| 397 | L<Unicode::Collate> has been upgraded from version 0.73 to version 0.76 |
| 398 | |
| 399 | Updated to CLDR 1.9.1 |
| 400 | |
| 401 | =item * |
| 402 | |
| 403 | L<Unicode::Normalize> has been upgraded from version 1.10 to version 1.12 |
| 404 | |
| 405 | Fixes for the removal of F<unicore/CompositionExclusions.txt> from core. |
| 406 | |
| 407 | =item * |
| 408 | |
| 409 | L<XSLoader> has been upgraded from version 0.13 to version 0.15 |
| 410 | |
| 411 | =back |
| 412 | |
| 413 | =head2 Removed Modules and Pragmata |
| 414 | |
| 415 | As promised in Perl 5.14.0's release notes, the following modules have |
| 416 | been removed from the core distribution, and if needed should be installed |
| 417 | from CPAN instead. |
| 418 | |
| 419 | =over |
| 420 | |
| 421 | =item * |
| 422 | |
| 423 | C<Devel::DProf> has been removed from the Perl core. Prior version was 20110228.00. |
| 424 | |
| 425 | =item * |
| 426 | |
| 427 | C<Shell> has been removed from the Perl core. Prior version was 0.72_01. |
| 428 | |
| 429 | =back |
| 430 | |
| 431 | =head1 Documentation |
| 432 | |
| 433 | =head2 New Documentation |
| 434 | |
| 435 | None. |
| 436 | |
| 437 | =head2 Changes to Existing Documentation |
| 438 | |
| 439 | =head3 L<perlfork> |
| 440 | |
| 441 | =over |
| 442 | |
| 443 | =item * |
| 444 | |
| 445 | Added portability caveats related to using C<kill> on forked process. |
| 446 | |
| 447 | =back |
| 448 | |
| 449 | =head3 L<perlfunc> |
| 450 | |
| 451 | =over |
| 452 | |
| 453 | =item * |
| 454 | |
| 455 | Documentation for C<use> now includes a pointer to F<if.pm> (5.14.1) |
| 456 | |
| 457 | =item * |
| 458 | |
| 459 | C<given>, C<when> and C<default> are now listed in L<perlfunc> (5.14.1). |
| 460 | |
| 461 | =item * |
| 462 | |
| 463 | The examples for the C<select> function no longer use strings for file |
| 464 | handles. |
| 465 | |
| 466 | =back |
| 467 | |
| 468 | =head3 L<perlguts> |
| 469 | |
| 470 | =over |
| 471 | |
| 472 | =item * |
| 473 | |
| 474 | Some of the function descriptions in L<perlguts> were confusing, as it was |
| 475 | not clear whether they referred to the function above or below the |
| 476 | description. This has been clarified [perl #91790]. |
| 477 | |
| 478 | =back |
| 479 | |
| 480 | =head3 L<perllol> |
| 481 | |
| 482 | =over |
| 483 | |
| 484 | =item * |
| 485 | |
| 486 | L<perllol> has been expanded with examples using the new C<push $scalar> |
| 487 | syntax introduced in Perl 5.14.0 (5.14.1). |
| 488 | |
| 489 | =back |
| 490 | |
| 491 | =head3 L<perlmod> |
| 492 | |
| 493 | =over |
| 494 | |
| 495 | =item * |
| 496 | |
| 497 | L<perlmod> now states explicitly that some types of explicit symbol table |
| 498 | manipulation are not supported. This codifies what was effectively already |
| 499 | the case [perl #78074]. |
| 500 | |
| 501 | =back |
| 502 | |
| 503 | =head3 L<perlop> |
| 504 | |
| 505 | =over 4 |
| 506 | |
| 507 | =item * |
| 508 | |
| 509 | The explanation of bitwise operators has been expanded to explain how they |
| 510 | work on Unicode strings (5.14.1). |
| 511 | |
| 512 | =item * |
| 513 | |
| 514 | The section on the triple-dot or yada-yada operator has been moved up, as |
| 515 | it used to separate two closely related sections about the comma operator |
| 516 | (5.14.1). |
| 517 | |
| 518 | =item * |
| 519 | |
| 520 | More examples for C<m//g> have been added (5.14.1). |
| 521 | |
| 522 | =item * |
| 523 | |
| 524 | The C<<< <<\FOO >>> here-doc syntax has been documented (5.14.1). |
| 525 | |
| 526 | =back |
| 527 | |
| 528 | =head3 L<perlpodstyle> |
| 529 | |
| 530 | =over 4 |
| 531 | |
| 532 | =item * |
| 533 | |
| 534 | The tips on which formatting codes to use have been corrected and greatly |
| 535 | expanded. |
| 536 | |
| 537 | =item * |
| 538 | |
| 539 | There are now a couple of example one-liners for previewing POD files after |
| 540 | they have been edited. |
| 541 | |
| 542 | =back |
| 543 | |
| 544 | =head3 L<perlsub> |
| 545 | |
| 546 | =over |
| 547 | |
| 548 | =item * |
| 549 | |
| 550 | The L<perlsub/"Lvalue subroutines"> section has been amended to reflect |
| 551 | changes and bug fixes introduced in Perl 5.15.0. |
| 552 | |
| 553 | =back |
| 554 | |
| 555 | =head3 L<perlre> |
| 556 | |
| 557 | =over |
| 558 | |
| 559 | =item * |
| 560 | |
| 561 | The C<(*COMMIT)> directive is now listed in the right section |
| 562 | (L<Verbs without an argument|perlre/Verbs without an argument>). |
| 563 | |
| 564 | =back |
| 565 | |
| 566 | =head3 L<perlrun> |
| 567 | |
| 568 | =over |
| 569 | |
| 570 | =item * |
| 571 | |
| 572 | L<perlrun> has undergone a significant clean-up. Most notably, the |
| 573 | B<-0x...> form of the B<-0> flag has been clarified, and the final section |
| 574 | on environment variables has been corrected and expanded (5.14.1). |
| 575 | |
| 576 | =back |
| 577 | |
| 578 | =head3 L<perltie> |
| 579 | |
| 580 | =over |
| 581 | |
| 582 | =item * |
| 583 | |
| 584 | Documented the required syntax for tying handles. |
| 585 | |
| 586 | =back |
| 587 | |
| 588 | =head3 L<perlvar> |
| 589 | |
| 590 | =over |
| 591 | |
| 592 | =item * |
| 593 | |
| 594 | The documentation for L<$!|perlvar/$!> has been corrected and clarified. |
| 595 | It used to state that $! could be C<undef>, which is not the case. It was |
| 596 | also unclear as to whether system calls set C's C<errno> or Perl's C<$!> |
| 597 | [perl #91614]. |
| 598 | |
| 599 | =item * |
| 600 | |
| 601 | Documentation for L<$$|perlvar/$$> has been amended with additional |
| 602 | cautions regarding changing the process ID. |
| 603 | |
| 604 | =back |
| 605 | |
| 606 | =head3 L<POSIX> |
| 607 | |
| 608 | =over |
| 609 | |
| 610 | =item * |
| 611 | |
| 612 | The invocation documentation for C<WIFEXITED>, C<WEXITSTATUS>, |
| 613 | C<WIFSIGNALED>, C<WTERMSIG>, C<WIFSTOPPED>, and C<WSTOPSIG> has been |
| 614 | corrected (5.14.1). |
| 615 | |
| 616 | =back |
| 617 | |
| 618 | =head1 Diagnostics |
| 619 | |
| 620 | The following additions or changes have been made to diagnostic output, |
| 621 | including warnings and fatal error messages. For the complete list of |
| 622 | diagnostic messages, see L<perldiag>. |
| 623 | |
| 624 | =head2 New Diagnostics |
| 625 | |
| 626 | =head3 New Warnings |
| 627 | |
| 628 | =over 4 |
| 629 | |
| 630 | =item L<Useless assignment to a temporary|perldiag/"Useless assignment to a temporary"> |
| 631 | |
| 632 | Assigning to a temporary returned from an XS lvalue subroutine now produces a |
| 633 | warning [perl #31946]. |
| 634 | |
| 635 | =back |
| 636 | |
| 637 | =head2 Changes to Existing Diagnostics |
| 638 | |
| 639 | None. |
| 640 | |
| 641 | =head1 Utility Changes |
| 642 | |
| 643 | None. |
| 644 | |
| 645 | =head1 Configuration and Compilation |
| 646 | |
| 647 | =over 4 |
| 648 | |
| 649 | =item * |
| 650 | |
| 651 | F<regexp.h> has been modified for compatibility with GCC's B<-Werror> |
| 652 | option, as used by some projects that include perl's header files (5.14.1). |
| 653 | |
| 654 | =item * |
| 655 | |
| 656 | C<USE_LOCALE{,_COLLATE,_CTYPE,_NUMERIC}> have been added the output of perl -V |
| 657 | as they have affect the behaviour of the interpreter binary (albeit only |
| 658 | in a small area). |
| 659 | |
| 660 | =item * |
| 661 | |
| 662 | The code and tests for L<IPC::Open2> have been moved from F<ext/IPC-Open2> |
| 663 | into F<ext/IPC-Open3>, as C<IPC::Open2::open2()> is implemented as a thin |
| 664 | wrapper around C<IPC::Open3::_open3()>, and hence is very tightly coupled to |
| 665 | it. |
| 666 | |
| 667 | =item * |
| 668 | |
| 669 | The magic types and magic vtables are now generated from data in a new script |
| 670 | F<regen/mg_vtable.pl>, instead of being maintained by hand. As different EBCDIC |
| 671 | variants can't agree on the code point for '~', the character to code point |
| 672 | conversion is done at build time by F<generate_uudmap> to a new generated header |
| 673 | F<mg_data.h>. C<PL_vtbl_bm> and C<PL_vtbl_fm> are now defined by the |
| 674 | pre-processor as C<PL_vtbl_regexp>, instead of being distinct C variables. |
| 675 | C<PL_vtbl_sig> has been removed. |
| 676 | |
| 677 | =item * |
| 678 | |
| 679 | Building with C<-DPERL_GLOBAL_STRUCT> works again. This configuration is not |
| 680 | generally used. |
| 681 | |
| 682 | =item * |
| 683 | |
| 684 | Perl configured with I<MAD> now correctly frees C<MADPROP> structures when |
| 685 | OPs are freed. C<MADPROP>s are now allocated with C<PerlMemShared_malloc()> |
| 686 | |
| 687 | =back |
| 688 | |
| 689 | =head1 Testing |
| 690 | |
| 691 | There have been no significant changes to the process for testing a |
| 692 | newly-built perl. |
| 693 | |
| 694 | See the source code commit history for changes to individual test files. |
| 695 | |
| 696 | =head1 Platform Support |
| 697 | |
| 698 | =head2 New Platforms |
| 699 | |
| 700 | None. |
| 701 | |
| 702 | =head2 Discontinued Platforms |
| 703 | |
| 704 | None. |
| 705 | |
| 706 | =head2 Platform-Specific Notes |
| 707 | |
| 708 | =head3 GNU/Hurd |
| 709 | |
| 710 | =over |
| 711 | |
| 712 | =item * |
| 713 | |
| 714 | No longer overrides possible extra $ccflags values given to Configure |
| 715 | on GNU/Hurd. C.f. Bug-Debian: http://bugs.debian.org/587901 |
| 716 | |
| 717 | =back |
| 718 | |
| 719 | =head3 Mac OS X |
| 720 | |
| 721 | =over |
| 722 | |
| 723 | =item * |
| 724 | |
| 725 | Clarified Apple Developer Tools requirements in F<README.macosx> |
| 726 | |
| 727 | =item * |
| 728 | |
| 729 | Mac OS X specific compilation instructions have been clarified (5.14.1) |
| 730 | |
| 731 | =back |
| 732 | |
| 733 | =head3 MSWin32 |
| 734 | |
| 735 | =over |
| 736 | |
| 737 | =item * |
| 738 | |
| 739 | Supplied F<makefile.mk> patched to support gcc-4.x.x and README.win32 |
| 740 | updated accordingly. [perl #91354] |
| 741 | |
| 742 | =back |
| 743 | |
| 744 | =head3 Solaris |
| 745 | |
| 746 | =over |
| 747 | |
| 748 | =item * |
| 749 | |
| 750 | Updated the list of required packages for building perl to reflect Solaris 9 |
| 751 | and 10 in README.solaris [perl #90850] (5.14.1) |
| 752 | |
| 753 | =back |
| 754 | |
| 755 | =head3 Ubuntu Linux |
| 756 | |
| 757 | =over 4 |
| 758 | |
| 759 | =item * |
| 760 | |
| 761 | The L<ODBM_File> installation process has been updated with the new library |
| 762 | paths on Ubuntu natty [perl #90106] (5.14.1) |
| 763 | |
| 764 | =item * |
| 765 | |
| 766 | I<h2ph> now gets the include paths from gcc correctly. This stopped |
| 767 | working when Ubuntu switched to a "multiarch" setup [perl #90122]. |
| 768 | |
| 769 | =back |
| 770 | |
| 771 | =head1 Internal Changes |
| 772 | |
| 773 | =over 4 |
| 774 | |
| 775 | =item * |
| 776 | |
| 777 | The compiled representation of formats is now stored via the C<mg_ptr> of |
| 778 | their C<PERL_MAGIC_fm>. Previously it was stored in the string buffer, |
| 779 | beyond C<SvLEN()>, the regular end of the string. C<SvCOMPILED()> and |
| 780 | C<SvCOMPILED_{on,off}()> now exist solely for compatibility for XS code. |
| 781 | The first is always 0, the other two now no-ops. (5.14.1) |
| 782 | |
| 783 | =item * |
| 784 | |
| 785 | Some global variables have been marked C<const>, members in the interpreter |
| 786 | structure have been re-ordered, and the opcodes have been re-ordered. The op |
| 787 | C<OP_AELEMFAST> has been split into C<OP_AELEMFAST> and C<OP_AELEMFAST_LEX>. |
| 788 | |
| 789 | =item * |
| 790 | |
| 791 | When empting a hash of its elements (e.g. via undef(%h), or %h=()), HvARRAY |
| 792 | field is no longer temporarily zeroed. Any destructors called on the freed |
| 793 | elements see the remaining elements. Thus, %h=() becomes more like C<delete |
| 794 | $h{$_} for keys %h>. |
| 795 | |
| 796 | =item * |
| 797 | |
| 798 | Boyer-Moore compiled scalars are now PVMGs, and the Boyer-Moore tables are now |
| 799 | stored via the mg_ptr of their C<PERL_MAGIC_bm>. Previously they were PVGVs, |
| 800 | with the tables stored in the string buffer, beyond C<SvLEN()>. This eliminates |
| 801 | the last place where the core stores data beyond C<SvLEN()>. |
| 802 | |
| 803 | =item * |
| 804 | |
| 805 | Simplified logic in C<Perl_sv_magic()> introduces a small change of |
| 806 | behaviour for error cases involving unknown magic types. Previously, if |
| 807 | C<Perl_sv_magic()> was passed a magic type unknown to it, it would |
| 808 | |
| 809 | =over |
| 810 | |
| 811 | =item 1. |
| 812 | |
| 813 | Croak "Modification of a read-only value attempted" if read only |
| 814 | |
| 815 | =item 2. |
| 816 | |
| 817 | Return without error if the SV happened to already have this magic |
| 818 | |
| 819 | =item 3. |
| 820 | |
| 821 | otherwise croak "Don't know how to handle magic of type \\%o" |
| 822 | |
| 823 | =back |
| 824 | |
| 825 | Now it will always croak "Don't know how to handle magic of type \\%o", even |
| 826 | on read only values, or SVs which already have the unknown magic type. |
| 827 | |
| 828 | =back |
| 829 | |
| 830 | =head1 Selected Bug Fixes |
| 831 | |
| 832 | =head2 Regular expressions and character classes |
| 833 | |
| 834 | =over 4 |
| 835 | |
| 836 | =item * |
| 837 | |
| 838 | The new (in 5.14.0) regular expression modifier C</a> when repeated like |
| 839 | C</aa> forbids the characters outside the ASCII range that match |
| 840 | characters inside that range from matching under C</i>. This did not |
| 841 | work under some circumstances, all involving alternation, such as: |
| 842 | |
| 843 | "\N{KELVIN SIGN}" =~ /k|foo/iaa; |
| 844 | |
| 845 | succeeded inappropriately. This is now fixed. |
| 846 | |
| 847 | =item * |
| 848 | |
| 849 | 5.14.0 introduced some memory leaks in regular expression character |
| 850 | classes such as C<[\w\s]>, which have now been fixed (5.14.1) |
| 851 | |
| 852 | =item * |
| 853 | |
| 854 | An edge case in regular expression matching could potentially loop. |
| 855 | This happened only under C</i> in bracketed character classes that have |
| 856 | characters with multi-character folds, and the target string to match |
| 857 | against includes the first portion of the fold, followed by another |
| 858 | character that has a multi-character fold that begins with the remaining |
| 859 | portion of the fold, plus some more. |
| 860 | |
| 861 | "s\N{U+DF}" =~ /[\x{DF}foo]/i |
| 862 | |
| 863 | is one such case. C<\xDF> folds to C<"ss">. (5.14.1) |
| 864 | |
| 865 | =item * |
| 866 | |
| 867 | A few characters in regular expression pattern matches did not |
| 868 | match correctly in some circumstances, all involving C</i>. The |
| 869 | affected characters are: |
| 870 | COMBINING GREEK YPOGEGRAMMENI, |
| 871 | GREEK CAPITAL LETTER IOTA, |
| 872 | GREEK CAPITAL LETTER UPSILON, |
| 873 | GREEK PROSGEGRAMMENI, |
| 874 | GREEK SMALL LETTER IOTA WITH DIALYTIKA AND OXIA, |
| 875 | GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS, |
| 876 | GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND OXIA, |
| 877 | GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND TONOS, |
| 878 | LATIN SMALL LETTER LONG S, |
| 879 | LATIN SMALL LIGATURE LONG S T, |
| 880 | and |
| 881 | LATIN SMALL LIGATURE ST. |
| 882 | |
| 883 | =item * |
| 884 | |
| 885 | Fixed memory leak regression in regular expression compilation |
| 886 | under threading |
| 887 | |
| 888 | =back |
| 889 | |
| 890 | =head2 Formats |
| 891 | |
| 892 | =over |
| 893 | |
| 894 | =item * |
| 895 | |
| 896 | A number of edge cases have been fixed with formats and C<formline>; |
| 897 | in particular, where the format itself is potentially variable (such as |
| 898 | with ties and overloading), and where the format and data differ in their |
| 899 | encoding. In both these cases, it used to possible for the output to be |
| 900 | corrupted [perl #91032]. |
| 901 | |
| 902 | =item * |
| 903 | |
| 904 | C<formline> no longer converts its argument into a string in-place. So |
| 905 | passing a reference to C<formline> no longer destroys the reference |
| 906 | [perl #79532]. |
| 907 | |
| 908 | =back |
| 909 | |
| 910 | =head2 Copy-on-write scalars |
| 911 | |
| 912 | Copy-on-write scalars were introduced in 5.8.0, but most Perl code |
| 913 | did not encounter them (they were used mostly internally). Perl |
| 914 | 5.10.0 extended them, such that assigning C<__PACKAGE__> or a |
| 915 | hash key to a scalar would make it copy-on-write. Several parts |
| 916 | of Perl were not updated to account for them, but have now been fixed. |
| 917 | |
| 918 | =over |
| 919 | |
| 920 | =item * |
| 921 | |
| 922 | C<utf8::decode> had a nasty bug that would modify copy-on-write scalars' |
| 923 | string buffers in place (i.e., skipping the copy). This could result in |
| 924 | hashes having two elements with the same key [perl #91834]. |
| 925 | |
| 926 | =item * |
| 927 | |
| 928 | Lvalue subroutines were not allowing COW scalars to be returned. This was |
| 929 | fixed for lvalue scalar context in Perl 5.12.3 and 5.14.0, but list context |
| 930 | was not fixed until this release. |
| 931 | |
| 932 | =item * |
| 933 | |
| 934 | Elements of restricted hashes (see the L<fields> pragma) containing |
| 935 | copy-on-write values couldn't be deleted, nor could such hashes be cleared |
| 936 | (C<%hash = ()>). |
| 937 | |
| 938 | =item * |
| 939 | |
| 940 | Localising a tied variable used to make it read-only if it contained a |
| 941 | copy-on-write string. |
| 942 | |
| 943 | =item * |
| 944 | |
| 945 | L<Storable>, L<Devel::Peek> and L<PerlIO::scalar> had similar problems. |
| 946 | See L</Updated Modules and Pragmata>, above. |
| 947 | |
| 948 | =back |
| 949 | |
| 950 | =head2 lvalue subroutines |
| 951 | |
| 952 | There have been various fixes to lvalue subroutines. |
| 953 | |
| 954 | =over |
| 955 | |
| 956 | =item * |
| 957 | |
| 958 | Explicit return now returns the actual argument passed to return, instead |
| 959 | of copying it [perl #72724] [perl #72706]. |
| 960 | |
| 961 | B<Note:> There are still some discrepancies between explicit and implicit |
| 962 | return, which will hopefully be resolved soon. So the exact behaviour is |
| 963 | not set in stone yet. |
| 964 | |
| 965 | =item * |
| 966 | |
| 967 | Lvalue subroutines used to enforce lvalue syntax (i.e., whatever can go on |
| 968 | the left-hand side of C<=>) for the last statement and the arguments to |
| 969 | return. Since lvalue subroutines are not always called in lvalue context, |
| 970 | this restriction has been lifted. |
| 971 | |
| 972 | =item * |
| 973 | |
| 974 | Lvalue subroutines are less restrictive as to what values can be returned. |
| 975 | It used to croak on values returned by C<shift> and C<delete> and from |
| 976 | other subroutines, but no longer does so [perl #71172]. |
| 977 | |
| 978 | =item * |
| 979 | |
| 980 | Empty lvalue subroutines (C<sub :lvalue {}>) used to return C<@_> in list |
| 981 | context. In fact, all subroutines used to, but regular subs were fixed in |
| 982 | Perl 5.8.2. Now lvalue subroutines have been likewise fixed. |
| 983 | |
| 984 | =item * |
| 985 | |
| 986 | Lvalue subroutines used to copy their return values in rvalue context. Not |
| 987 | only was this a waste of CPU cycles, but it also caused bugs. A C<($)> |
| 988 | prototype would cause an lvalue sub to copy its return value [perl #51408], |
| 989 | and C<while(lvalue_sub() =~ m/.../g) { ... }> would loop endlessly |
| 990 | [perl #78680]. |
| 991 | |
| 992 | =item * |
| 993 | |
| 994 | Autovivification now works on values returned from lvalue subroutines |
| 995 | [perl #7946]. |
| 996 | |
| 997 | =item * |
| 998 | |
| 999 | When called in pass-by-reference context (e.g., subroutine arguments or a list |
| 1000 | passed to C<for>), an lvalue subroutine returning arrays or hashes used to bind |
| 1001 | the arrays (or hashes) to scalar variables--something that is not supposed to |
| 1002 | happen. This could result in "Bizarre copy of ARRAY" errors or C<print> |
| 1003 | ignoring its arguments. It also made nonsensical code like C<@{\$_}> "work". |
| 1004 | This was fixed in 5.14.0 if an array were the first thing returned from the |
| 1005 | subroutine (but not for C<$scalar, @array> or hashes being returned). Now a |
| 1006 | more general fix has been applied [perl #23790]. |
| 1007 | |
| 1008 | =item * |
| 1009 | |
| 1010 | When called in pass-by-reference context, lvalue subroutines used to copy |
| 1011 | any read-only value that was returned. E.g., C< sub :lvalue { $] } > |
| 1012 | would not return C<$]>, but a copy of it. |
| 1013 | |
| 1014 | =item * |
| 1015 | |
| 1016 | Assignment to C<keys> returned from an lvalue sub used not to work, but now |
| 1017 | it does. |
| 1018 | |
| 1019 | =item * |
| 1020 | |
| 1021 | Applying the C<:lvalue> attribute to an XSUB or to an aliased subroutine |
| 1022 | stub with C<< sub foo :lvalue; >> syntax stopped working in Perl 5.12. |
| 1023 | This has been fixed. |
| 1024 | |
| 1025 | =back |
| 1026 | |
| 1027 | =head2 Fixes related to hashes |
| 1028 | |
| 1029 | =over |
| 1030 | |
| 1031 | =item * |
| 1032 | |
| 1033 | A bug has been fixed that would cause a "Use of freed value in iteration" |
| 1034 | error if the next two hash elements that would be iterated over are |
| 1035 | deleted [perl #85026]. (5.14.1) |
| 1036 | |
| 1037 | =item * |
| 1038 | |
| 1039 | Freeing deeply nested hashes no longer crashes [perl #44225]. |
| 1040 | |
| 1041 | =item * |
| 1042 | |
| 1043 | Deleting the current hash iterator (the hash element that would be returend |
| 1044 | by the next call to C<each>) in void context used not to free it. The hash |
| 1045 | would continue to reference it until the next iteration. This has been |
| 1046 | fixed [perl #85026]. |
| 1047 | |
| 1048 | =back |
| 1049 | |
| 1050 | =head2 Other notable fixes |
| 1051 | |
| 1052 | =over |
| 1053 | |
| 1054 | =item * |
| 1055 | |
| 1056 | Passing the same constant subroutine to both C<index> and C<formline> no |
| 1057 | longer causes one or the other to fail [perl #89218]. (5.14.1) |
| 1058 | |
| 1059 | =item * |
| 1060 | |
| 1061 | List assignment to lexical variables declared with attributes in the same |
| 1062 | statement (C<my ($x,@y) : blimp = (72,94)>) stopped working in Perl 5.8.0. |
| 1063 | It has now been fixed. |
| 1064 | |
| 1065 | =item * |
| 1066 | |
| 1067 | Perl 5.10.0 introduced some faulty logic that made "U*" in the middle of |
| 1068 | a pack template equivalent to "U0" if the input string was empty. This has |
| 1069 | been fixed [perl #90160]. |
| 1070 | |
| 1071 | =item * |
| 1072 | |
| 1073 | Destructors on objects were not called during global destruction on objects |
| 1074 | that were not referenced by any scalars. This could happen if an array |
| 1075 | element were blessed (e.g., C<bless \$a[0]>) or if a closure referenced a |
| 1076 | blessed variable (C<bless \my @a; sub foo { @a }>). |
| 1077 | |
| 1078 | Now there is an extra pass during global destruction to fire destructors on |
| 1079 | any objects that might be left after the usual passes that check for |
| 1080 | objects referenced by scalars [perl #36347]. |
| 1081 | |
| 1082 | This bug fix was added in Perl 5.13.9, but caused problems with some CPAN |
| 1083 | modules that were relying on the bug. Since it was so close to Perl |
| 1084 | 5.14.0, the fix was reverted in 5.13.10, to allow more time for the modules |
| 1085 | to adapt. Hopefully they will be fixed soon (see L</Known Problems>, |
| 1086 | below). |
| 1087 | |
| 1088 | =item * |
| 1089 | |
| 1090 | C<given> was not calling set-magic on the implicit lexical C<$_> that it |
| 1091 | uses. This meant, for example, that C<pos> would be remembered from one |
| 1092 | execution of the same C<given> block to the next, even if the input were a |
| 1093 | different variable [perl #84526]. |
| 1094 | |
| 1095 | =item * |
| 1096 | |
| 1097 | The "R" command for restarting a debugger session has been fixed to work on |
| 1098 | Windows, or any other system lacking a C<POSIX::_SC_OPEN_MAX> constant |
| 1099 | [perl #87740]. |
| 1100 | |
| 1101 | =item * |
| 1102 | |
| 1103 | Fixed a case where it was possible that a freed buffer may have been read |
| 1104 | from when parsing a here document [perl #90128]. (5.14.1) |
| 1105 | |
| 1106 | =item * |
| 1107 | |
| 1108 | The C<study> function could become confused if fed a string longer than |
| 1109 | 2**31 characters. Now it simply skips such strings. |
| 1110 | |
| 1111 | =item * |
| 1112 | |
| 1113 | C<each(I<ARRAY>)> is now wrapped in C<defined(...)>, like C<each(I<HASH>)>, |
| 1114 | inside a C<while> condition [perl #90888]. |
| 1115 | |
| 1116 | =item * |
| 1117 | |
| 1118 | In @INC filters (subroutines returned by subroutines in @INC), $_ used to |
| 1119 | misbehave: If returned from a subroutine, it would not be copied, but the |
| 1120 | variable itself would be returned; and freeing $_ (e.g., with C<undef *_>) |
| 1121 | would cause perl to crash. This has been fixed [perl #91880]. |
| 1122 | |
| 1123 | =item * |
| 1124 | |
| 1125 | An ASCII single quote (') in a symbol name is meant to be equivalent to a |
| 1126 | double colon (::) except at the end of the name. It was not equivalent if |
| 1127 | followed by a null character, but now it is [perl #88138]. |
| 1128 | |
| 1129 | =item * |
| 1130 | |
| 1131 | The abbreviations for four C1 control characters |
| 1132 | C<MW> |
| 1133 | C<PM>, |
| 1134 | C<RI>, |
| 1135 | and |
| 1136 | C<ST> |
| 1137 | were previously unrecognized by C<\N{}>, |
| 1138 | vianame(), and string_vianame(). |
| 1139 | |
| 1140 | =item * |
| 1141 | |
| 1142 | Some cases of threads crashing due to memory allocation during cloning have |
| 1143 | been fixed [perl #90006]. |
| 1144 | |
| 1145 | =item * |
| 1146 | |
| 1147 | Attempting to C<goto> out of a tied handle method used to cause memory |
| 1148 | corruption or crashes. Now it produces an error message instead |
| 1149 | [perl #8611]. |
| 1150 | |
| 1151 | =item * |
| 1152 | |
| 1153 | Perl skips copying values returned from a subroutine if it thinks the value |
| 1154 | is not in use elsewhere. Due to faulty logic, this would happen with the |
| 1155 | result of C<delete>, C<shift> or C<splice>, even if the result was |
| 1156 | referenced elsewhere. So C<< \sub { delete $_[0] }->($x) >> would return a |
| 1157 | reference to C<$x>. This has been fixed [perl #91844]. |
| 1158 | |
| 1159 | =back |
| 1160 | |
| 1161 | =head1 Known Problems |
| 1162 | |
| 1163 | =over 4 |
| 1164 | |
| 1165 | =item * |
| 1166 | |
| 1167 | The fix for perl #36347 causes test failures for C<Gtk2> and C<Tk> on some |
| 1168 | systems [perl #82542]. |
| 1169 | |
| 1170 | =item * |
| 1171 | |
| 1172 | The changes to C<tie> cause test failures for the C<JS> module. |
| 1173 | |
| 1174 | =item * |
| 1175 | |
| 1176 | The changes to C<$$> cause test failures for the C<Event> module. |
| 1177 | |
| 1178 | =item * |
| 1179 | |
| 1180 | L<YAML::Syck> has (undiagnosed) test failures. |
| 1181 | |
| 1182 | =back |
| 1183 | |
| 1184 | |
| 1185 | =head1 Acknowledgements |
| 1186 | |
| 1187 | Perl 5.15.0 represents approximatly five weeks of development since Perl |
| 1188 | 5.14.0 and contains approximately 54,000 lines of changes across 618 |
| 1189 | files from 57 authors. |
| 1190 | |
| 1191 | Perl continues to flourish into its third decade thanks to a vibrant |
| 1192 | community of users and developers. The following people are known to |
| 1193 | have contributed the improvements that became Perl 5.15.0: |
| 1194 | |
| 1195 | Alan Haggai Alavi, Bo Johansson, Bo Lindbergh, brian d foy, Chia-liang |
| 1196 | Kao, Chris 'BinGOs' Williams, Claudio Ramirez, Craig A. Berry, David |
| 1197 | Golden, David Leadbeater, David Mitchell, Dennis Kaarsemaker, Dominic |
| 1198 | Hargreaves, Eric Brine, Father Chrysostomos, Florian Ragwitz, George |
| 1199 | Greer, Gisle Aas, H.Merijn Brand, Hojung Yoon, Ian Goodacre, Jesse |
| 1200 | Vincent, Jim Cromie, Johan Vromans, John Hawkinson, John P. Linderman, |
| 1201 | Joshua ben Jore, Karl Williamson, Kevin J. Woolley, Leo Lapworth, Leon |
| 1202 | Brocard, Leon Timmermans, Louis Strous, Marcel Grünauer, Martin Hasch, |
| 1203 | Max Maischein, Michael Witten, Moritz Lenz, Nicholas Clark, Niko Tyni, |
| 1204 | Nuno Carvalho, Pau Amma, Peter John Acklam, Robin Barker, Salvador |
| 1205 | Fandiño, Samuel Thibault, Shawn M Moore, Shigeya Suzuki, Shlomi Fish, |
| 1206 | Sisyphus, Steffen Müller, Todd Rinaldo, Tom Christiansen, Tony Cook, |
| 1207 | Vladimir Timofeev, Zefram and Zsbán Ambrus. |
| 1208 | |
| 1209 | The list above is almost certainly incomplete as it is automatically |
| 1210 | generated from version control history. In particular, it does not |
| 1211 | include the names of the (very much appreciated) contributors who |
| 1212 | reported issues to the Perl bug tracker. |
| 1213 | |
| 1214 | Many of the changes included in this version originated in the CPAN |
| 1215 | modules included in Perl's core. We're grateful to the entire CPAN |
| 1216 | community for helping Perl to flourish. |
| 1217 | |
| 1218 | For a more complete list of all of Perl's historical contributors, |
| 1219 | please see the F<AUTHORS> file in the Perl source distribution. |
| 1220 | |
| 1221 | =head1 Reporting Bugs |
| 1222 | |
| 1223 | If you find what you think is a bug, you might check the articles |
| 1224 | recently posted to the comp.lang.perl.misc newsgroup and the perl |
| 1225 | bug database at http://rt.perl.org/perlbug/ . There may also be |
| 1226 | information at http://www.perl.org/ , the Perl Home Page. |
| 1227 | |
| 1228 | If you believe you have an unreported bug, please run the L<perlbug> |
| 1229 | program included with your release. Be sure to trim your bug down |
| 1230 | to a tiny but sufficient test case. Your bug report, along with the |
| 1231 | output of C<perl -V>, will be sent off to perlbug@perl.org to be |
| 1232 | analysed by the Perl porting team. |
| 1233 | |
| 1234 | If the bug you are reporting has security implications, which make it |
| 1235 | inappropriate to send to a publicly archived mailing list, then please send |
| 1236 | it to perl5-security-report@perl.org. This points to a closed subscription |
| 1237 | unarchived mailing list, which includes |
| 1238 | all the core committers, who will be able |
| 1239 | to help assess the impact of issues, figure out a resolution, and help |
| 1240 | co-ordinate the release of patches to mitigate or fix the problem across all |
| 1241 | platforms on which Perl is supported. Please only use this address for |
| 1242 | security issues in the Perl core, not for modules independently |
| 1243 | distributed on CPAN. |
| 1244 | |
| 1245 | =head1 SEE ALSO |
| 1246 | |
| 1247 | The F<Changes> file for an explanation of how to view exhaustive details |
| 1248 | on what changed. |
| 1249 | |
| 1250 | The F<INSTALL> file for how to build Perl. |
| 1251 | |
| 1252 | The F<README> file for general stuff. |
| 1253 | |
| 1254 | The F<Artistic> and F<Copying> files for copyright information. |
| 1255 | |
| 1256 | =cut |