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1 | =head1 NAME |
2 | |
3 | perldelta - what's new for perl5.005 |
4 | |
5 | =head1 DESCRIPTION |
6 | |
7 | This document describes differences between the 5.004 release and this one. |
8 | |
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9 | [XXX this needs more verbose summaries of the sub topics, instead of just |
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10 | the "See foo." Scheduled for a second iteration. GSAR] |
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11 | |
12 | =head1 About the new versioning system |
13 | |
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14 | =head1 Incompatible Changes |
15 | |
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16 | =head2 WARNING: This version is not binary compatible with Perl 5.004. |
17 | |
18 | Starting with Perl 5.004_50 there were many deep and far-reaching changes |
19 | to the language internals. If you have dynamically loaded extensions |
20 | that you built under perl 5.003 or 5.004, you can continue to use them |
21 | with 5.004, but you will need to rebuild and reinstall those extensions |
22 | to use them 5.005. See L<INSTALL> for detailed instructions on how to |
23 | upgrade. |
24 | |
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25 | =head2 Default installation structure has changed |
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26 | |
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27 | The new Configure defaults are designed to allow a smooth upgrade from |
28 | 5.004 to 5.005, but you should read L<INSTALL> for a detailed |
29 | discussion of the changes in order to adapt them to your system. |
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30 | |
31 | =head2 Perl Source Compatibility |
32 | |
33 | When none of the experimental features are enabled, there should be |
34 | no user-visible Perl source compatibility issue. |
35 | |
36 | If threads are enabled, then some caveats apply. C<@_> and C<$_> become |
37 | lexical variables. The effect of this should be largely transparent to |
38 | the user, but there are some boundary conditions under which user will |
39 | need to be aware of the issues. [XXX Add e.g. here.] |
40 | |
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41 | Some new keywords have been introduced. These are generally expected to |
42 | have very little impact on compatibility. See L</New C<INIT> keyword>, |
43 | L</New C<lock> keyword>, and L</New C<qr//> operator>. |
44 | |
45 | Certain barewords are now reserved. Use of these will provoke a warning |
46 | if you have asked for them with the C<-w> switch. |
47 | See L</C<our> is now a reserved word>. |
48 | |
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49 | =head2 C Source Compatibility |
50 | |
51 | =item Core sources now require ANSI C compiler |
52 | |
53 | =item Enabling threads has source compatibility issues |
54 | |
55 | =head2 Binary Compatibility |
56 | |
57 | This version is NOT binary compatible with older versions. All extensions |
58 | will need to be recompiled. |
59 | |
60 | =head2 Security fixes may affect compatibility |
61 | |
62 | A few taint leaks and taint omissions have been corrected. This may lead |
63 | to "failure" of scripts that used to work with older versions. Compiling |
64 | with -DINCOMPLETE_TAINTS provides a perl with minimal amounts of changes |
65 | to the tainting behavior. But note that the resulting perl will have |
66 | known insecurities. |
67 | |
68 | Oneliners with the C<-e> switch do not create temporary files anymore. |
69 | |
70 | =head2 Relaxed new mandatory warnings introduced in 5.004 |
71 | |
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72 | Many new warnings that were introduced in 5.004 have been made |
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73 | optional. Some of these warnings are still present, but perl's new |
74 | features make them less often a problem. See L<New Diagnostics>. |
75 | |
76 | =head2 Licensing |
77 | |
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78 | Perl has a new Social Contract for contributors. See F<Porting/Contract>. |
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79 | |
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80 | The license included in much of the Perl documentation has changed. |
81 | [XXX See where?] |
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82 | |
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83 | =head1 Core Changes |
84 | |
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85 | |
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86 | =head2 Threads |
87 | |
88 | WARNING: Threading is considered an experimental feature. Details of the |
89 | implementation may change without notice. There are known limitations |
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90 | and and some bugs. |
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91 | |
92 | See L<README.threads>. |
93 | |
94 | =head2 Compiler |
95 | |
96 | WARNING: The Compiler and related tools are considered experimental. |
97 | Features may change without notice, and there are known limitations |
98 | and bugs. |
99 | |
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100 | The Compiler produces three different types of transformations of a |
101 | perl program. The C backend generates C code that captures perl's state |
102 | just before execution begins. It eliminates the compile-time overheads |
103 | of the regular perl interpreter, but the run-time performance remains |
104 | comparatively the same. The CC backend generates optimized C code |
105 | equivivalent to the code path at run-time. The CC backend has greater |
106 | potential for big optimizations, but only a few optimizations are |
107 | implemented currently. The Bytecode backend generates a platform |
108 | independent bytecode representation of the interpreter's state |
109 | just before execution. Thus, the Bytecode back end also eliminates |
110 | much of the compilation overhead of the interpreter. |
111 | |
112 | The compiler comes with several valuable utilities. |
113 | |
114 | C<B::Lint> is an experimental module to detect and warn about suspicious |
115 | code, especially the cases that the C<-w> switch does not detect. |
116 | |
117 | C<B::Deparse> can be used to demystify perl code, and understand |
118 | how perl optimizes certain constructs. |
119 | |
120 | C<B::Xref> generates cross reference reports of all definition and use |
121 | of variables, subroutines and formats in a program. |
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122 | |
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123 | C<B::Showlex> show the lexical variables used by a subroutine or file |
124 | at a glance. |
125 | |
126 | C<perlcc> is a simple frontend for compiling perl. |
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127 | |
128 | See C<ext/B/README>. |
129 | |
130 | =head2 Regular Expressions |
131 | |
132 | See L<perlre> and L<perlop>. |
133 | |
134 | =head2 Improved malloc() |
135 | |
136 | See banner at the beginning of C<malloc.c> for details. |
137 | |
138 | =head2 Quicksort is internally implemented |
139 | |
140 | See C<perlfunc/sort>. |
141 | |
142 | =head2 Reliable signals |
143 | |
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144 | Two kinds. |
145 | |
146 | Via C<Thread::Signal>. |
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147 | |
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148 | Via switched runtime op loop. [XXX Not yet available.] |
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149 | |
150 | =head2 Reliable stack pointers |
151 | |
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152 | The internals now reallocate the perl stack only at predictable times. |
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153 | In particular, magic calls never trigger reallocations of the stack, |
154 | because all reentrancy of the runtime is handled using a "stack of stacks". |
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155 | This should improve reliability of cached stack pointers in the internals |
156 | and in XSUBs. |
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157 | |
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158 | =head2 Behavior of local() on composites is now well-defined |
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159 | |
160 | See L<perlfunc/local>. |
161 | |
162 | =head2 C<%!> is transparently tied to the L<Errno> module |
163 | |
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164 | See L<perlvar>, and L<Errno>. |
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165 | |
166 | =head2 Pseudo-hashes are supported |
167 | |
168 | See L<perlref>. |
169 | |
170 | =head2 C<EXPR foreach EXPR> is supported |
171 | |
172 | See L<perlsyn>. |
173 | |
174 | =head2 Slice notation on glob elements is supported |
175 | |
176 | [XXX See what?] |
177 | |
178 | =head2 Keywords can be globally overridden |
179 | |
180 | See L<perlsub>. |
181 | |
182 | =head2 C<$^E> is meaningful on Win32 |
183 | |
184 | See L<perlvar>. |
185 | |
186 | =head2 C<foreach (1..1000000)> optimized |
187 | |
188 | C<foreach (1..1000000)> is now optimized into a counting loop. It does |
189 | not try to allocate a 1000000-size list anymore. |
190 | |
191 | =head2 C<Foo::> can be used as implicitly quoted package name |
192 | |
193 | [XXX See what?] |
194 | |
195 | =head2 C<exists $Foo::{Bar::}> tests existence of a package |
196 | |
197 | [XXX See what?] |
198 | |
199 | =head2 Better locale support |
200 | |
201 | See L<perllocale>. |
202 | |
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203 | =head2 Experimental support for 64-bit platforms |
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204 | |
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205 | Perl5 has always had 64-bit support on systems with 64-bit longs. |
206 | Starting with 5.005, the beginnings of experimental support for systems |
207 | with 32-bit long and 64-bit 'long long' integers has been added. |
208 | If you add -DUSE_LONG_LONG to your ccflags in config.sh (or manually |
209 | define it in perl.h) then perl will be built with 'long long' support. |
210 | There will be many compiler warnings, and the resultant perl may not |
211 | work on all systems. There are many other issues related to |
212 | third-party extensions and libraries. This option exists to allow |
213 | people to work on those issues. |
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214 | |
215 | =head2 prototype() returns useful results on builtins |
216 | |
217 | See L<perlfunc/prototype>. |
218 | |
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219 | =head2 Extended support for exception handling |
220 | |
221 | C<die()> now accepts a reference value, and C<$@> gets set to that |
222 | value in exception traps. This makes it possible to propagate |
223 | exception objects. See L<perlfunc/eval>. [XXX there's nothing |
224 | about this in perlfunc/eval yet.] |
225 | |
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226 | =head2 Re-blessing in DESTROY() supported for chaining DESTROY() methods |
227 | |
228 | See L<perlobj/Destructors>. |
229 | |
230 | =head2 All C<printf> format conversions are handled internally |
231 | |
232 | See L<perlfunc/printf>. |
233 | |
234 | =head2 New C<INIT> keyword |
235 | |
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236 | C<INIT> subs are like C<BEGIN> and C<END>, but they get run just before |
237 | the perl runtime begins execution. e.g., the Perl Compiler makes use of |
238 | C<INIT> blocks to initialize and resolve pointers to XSUBs. |
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239 | |
240 | [XXX Needs to be documented in perlsub or perlmod.] |
241 | |
242 | =head2 New C<lock> keyword |
243 | |
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244 | The C<lock> keyword is the fundamental synchronization primitive |
245 | in threaded perl. When threads are not enabled, it is currently a noop. |
246 | |
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247 | To minimize impact on source compatibility this keyword is "weak", i.e., any |
248 | user-defined subroutine of the same name overrides it, unless a C<use Thread> |
249 | has been seen. |
250 | |
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251 | =head2 New C<qr//> operator |
252 | |
253 | The C<qr//> operator, which is syntactically similar to the other quote-like |
254 | operators, is used to create compiled regular expressions. This compiled |
255 | form can now be explicitly passed around in variables, and interpolated in |
256 | other regular expressions. See L<perlop> and L<perlre>. |
257 | |
258 | =head2 C<our> is now a reserved word |
259 | |
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260 | =head2 Tied arrays are now fully supported |
261 | |
262 | See L<Tie::Array>. |
263 | |
264 | =head2 Tied handles support is better |
265 | |
266 | Several missing hooks have been added. There is also a new base class for |
267 | TIEARRAY implementations. See L<Tie::Array>. |
268 | |
269 | |
270 | =head1 Supported Platforms |
271 | |
272 | Configure has many incremental improvements. Site-wide policy for building |
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273 | perl can now be made persistent, via Policy.sh. Configure also records |
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274 | the command-line arguments used in F<config.sh>. |
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275 | |
276 | =head2 New Platforms |
277 | |
278 | BeOS is now supported. See L<README.beos>. |
279 | |
280 | DOS is now supported under the DJGPP tools. See L<README.dos>. |
281 | |
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282 | MPE/iX is now supported. See L<README.mpeix>. |
283 | |
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284 | =head2 Changes in existing support |
285 | |
286 | Win32 support has been vastly enhanced. Support for Perl Object, a C++ |
287 | encapsulation of Perl. GCC and EGCS are now supported on Win32. |
288 | [XXX Perl Object needs a big explanation elsewhere, and a pointer to |
289 | that location here.] |
290 | |
291 | VMS configuration system has been rewritten. See L<README.vms>. |
292 | |
293 | OpenBSD better supported. [XXX what others?] |
294 | |
295 | =head1 Modules and Pragmata |
296 | |
297 | =head2 New Modules |
298 | |
299 | =over |
300 | |
301 | =item B |
302 | |
303 | Perl compiler and tools. See [XXX what?]. |
304 | |
305 | =item Data::Dumper |
306 | |
307 | A module to pretty print Perl data. See L<Data::Dumper>. |
308 | |
309 | =item Errno |
310 | |
311 | A module to look up errors more conveniently. See L<Errno>. |
312 | |
313 | =item File::Spec |
314 | |
315 | A portable API for file operations. |
316 | |
317 | =item ExtUtils::Installed |
318 | |
319 | Query and manage installed modules. |
320 | |
321 | =item ExtUtils::Packlist |
322 | |
323 | Manipulate .packlist files. |
324 | |
325 | =item Fatal |
326 | |
327 | Make functions/builtins succeed or die. |
328 | |
329 | =item IPC::SysV |
330 | |
331 | Constants and other support infrastructure for System V IPC operations |
332 | in perl. |
333 | |
334 | =item Test |
335 | |
336 | A framework for writing testsuites. |
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337 | |
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338 | =item Tie::Array |
339 | |
340 | Base class for tied arrays. |
341 | |
342 | =item Tie::Handle |
343 | |
344 | Base class for tied handles. |
345 | |
346 | =item Thread |
347 | |
348 | Perl thread creation, manipulation, and support. |
349 | |
350 | =item attrs |
351 | |
352 | Set subroutine attributes. |
353 | |
354 | =item fields |
355 | |
356 | Compile-time class fields. |
357 | |
358 | =item re |
359 | |
360 | Various pragmata to control behavior of regular expressions. |
361 | |
362 | =back |
363 | |
364 | =head2 Changes in existing modules |
365 | |
366 | =over |
367 | |
368 | =item CGI |
369 | |
370 | CGI has been updated to version 2.42. |
371 | |
372 | =item POSIX |
373 | |
374 | POSIX now has its own platform-specific hints files. |
375 | |
376 | =item DB_File |
377 | |
378 | DB_File supports version 2.x of Berkeley DB. See C<ext/DB_File/Changes>. |
379 | |
380 | =item MakeMaker |
381 | |
382 | MakeMaker now supports writing empty makefiles, provides a way to |
383 | specify that site umask() policy should be honored. There is also |
384 | better support for manipulation of .packlist files, and getting |
385 | information about installed modules. |
386 | |
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387 | Extensions that have both architecture-dependent and |
388 | architecture-independent files are now always installed completely in |
389 | the architecture-dependent locations. Previously, the shareable parts |
390 | were shared both across architectures and across perl versions and were |
391 | therefore liable to be overwritten with newer versions that might have |
392 | subtle incompatibilities. |
393 | |
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394 | =item CPAN |
395 | |
396 | [XXX What?] |
397 | |
398 | =item Cwd |
399 | |
400 | Cwd::cwd is faster on most platforms. |
401 | |
402 | =item Benchmark |
403 | |
404 | Keeps better time. |
405 | |
406 | =back |
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407 | |
408 | =head1 Utility Changes |
409 | |
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410 | h2ph and related utilities have been vastly overhauled. |
411 | |
412 | perlcc, a new experimental front end for the compiler is available. |
413 | |
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414 | The crude GNU configure emulator is now called configure.gnu. |
415 | |
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416 | =head1 API Changes |
417 | |
418 | =head2 Incompatible Changes |
419 | |
420 | =head2 Deprecations, Extensions |
421 | |
422 | =head2 C++ Support |
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423 | |
424 | =head1 Documentation Changes |
425 | |
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426 | Config.pm now has a glossary of variables. |
427 | |
428 | Porting/patching.pod has detailed instructions on how to create and |
429 | submit patches for perl. |
430 | |
431 | =head1 New Diagnostics |
432 | |
433 | =over |
434 | |
435 | =item Ambiguous call resolved as CORE::%s(), qualify as such or use & |
436 | |
437 | (W) A subroutine you have declared has the same name as a Perl keyword, |
438 | and you have used the name without qualification for calling one or the |
439 | other. Perl decided to call the builtin because the subroutine is |
440 | not imported. |
441 | |
442 | To force interpretation as a subroutine call, either put an ampersand |
443 | before the subroutine name, or qualify the name with its package. |
444 | Alternatively, you can import the subroutine (or pretend that it's |
445 | imported with the C<use subs> pragma). |
446 | |
447 | To silently interpret it as the Perl operator, use the C<CORE::> prefix |
448 | on the operator (e.g. C<CORE::log($x)>) or by declaring the subroutine |
449 | to be an object method (see L<attrs>). |
450 | |
451 | =item Bad index while coercing array into hash |
452 | |
453 | (F) The index looked up in the hash found as the 0'th element of a |
454 | pseudo-hash is not legal. Index values must be at 1 or greater. |
455 | See L<perlref>. |
456 | |
457 | =item Bareword "%s" refers to nonexistent package |
458 | |
459 | (W) You used a qualified bareword of the form C<Foo::>, but |
460 | the compiler saw no other uses of that namespace before that point. |
461 | Perhaps you need to predeclare a package? |
462 | |
463 | =item Can't call method "%s" on an undefined value |
464 | |
465 | (F) You used the syntax of a method call, but the slot filled by the |
466 | object reference or package name contains an undefined value. |
467 | Something like this will reproduce the error: |
468 | |
469 | $BADREF = 42; |
470 | process $BADREF 1,2,3; |
471 | $BADREF->process(1,2,3); |
472 | |
473 | =item Can't coerce array into hash |
474 | |
475 | (F) You used an array where a hash was expected, but the array has no |
476 | information on how to map from keys to array indices. You can do that |
477 | only with arrays that have a hash reference at index 0. |
478 | |
479 | =item Can't goto subroutine from an eval-string |
480 | |
481 | (F) The "goto subroutine" call can't be used to jump out of an eval "string". |
482 | (You can use it to jump out of an eval {BLOCK}, but you probably don't want to.) |
483 | |
484 | =item Can't use %%! because Errno.pm is not available |
485 | |
486 | (F) The first time the %! hash is used, perl automatically loads the |
487 | Errno.pm module. The Errno module is expected to tie the %! hash to |
488 | provide symbolic names for C<$!> errno values. |
489 | |
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490 | =item Cannot find an opnumber for "%s" |
491 | |
492 | (F) A string of a form C<CORE::word> was given to prototype(), but |
493 | there is no builtin with the name C<word>. |
494 | |
495 | =item Character class syntax [. .] is reserved for future extensions |
496 | |
497 | (W) Within regular expression character classes ([]) the syntax beginning |
498 | with "[." and ending with ".]" is reserved for future extensions. |
499 | If you need to represent those character sequences inside a regular |
500 | expression character class, just quote the square brackets with the |
501 | backslash: "\[." and ".\]". |
502 | |
503 | =item Character class syntax [: :] is reserved for future extensions |
504 | |
505 | (W) Within regular expression character classes ([]) the syntax beginning |
506 | with "[:" and ending with ":]" is reserved for future extensions. |
507 | If you need to represent those character sequences inside a regular |
508 | expression character class, just quote the square brackets with the |
509 | backslash: "\[:" and ":\]". |
510 | |
511 | =item Character class syntax [= =] is reserved for future extensions |
512 | |
513 | (W) Within regular expression character classes ([]) the syntax |
514 | beginning with "[=" and ending with "=]" is reserved for future extensions. |
515 | If you need to represent those character sequences inside a regular |
516 | expression character class, just quote the square brackets with the |
517 | backslash: "\[=" and "=\]". |
518 | |
519 | =item %s: Eval-group in insecure regular expression |
520 | |
521 | (F) Perl detected tainted data when trying to compile a regular expression |
522 | that contains the C<(?{ ... })> zero-width assertion, which is unsafe. |
523 | See L<perlre/(?{ code })>, and L<perlsec>. |
524 | |
525 | =item %s: Eval-group not allowed, use re 'eval' |
526 | |
527 | (F) A regular expression contained the C<(?{ ... })> zero-width assertion, |
528 | but that construct is only allowed when the C<use re 'eval'> pragma is |
529 | in effect. See L<perlre/(?{ code })>. |
530 | |
531 | =item %s: Eval-group not allowed at run time |
532 | |
533 | (F) Perl tried to compile a regular expression containing the C<(?{ ... })> |
534 | zero-width assertion at run time, as it would when the pattern contains |
535 | interpolated values. Since that is a security risk, it is not allowed. |
536 | If you insist, you may still do this by explicitly building the pattern |
537 | from an interpolated string at run time and using that in an eval(). |
538 | See L<perlre/(?{ code })>. |
539 | |
540 | =item Explicit blessing to '' (assuming package main) |
541 | |
542 | (W) You are blessing a reference to a zero length string. This has |
543 | the effect of blessing the reference into the package main. This is |
544 | usually not what you want. Consider providing a default target |
545 | package, e.g. bless($ref, $p or 'MyPackage'); |
546 | |
547 | =item Illegal hex digit ignored |
548 | |
549 | (W) You may have tried to use a character other than 0 - 9 or A - F in a |
550 | hexadecimal number. Interpretation of the hexadecimal number stopped |
551 | before the illegal character. |
552 | |
553 | =item No such array field |
554 | |
555 | (F) You tried to access an array as a hash, but the field name used is |
556 | not defined. The hash at index 0 should map all valid field names to |
557 | array indices for that to work. |
558 | |
559 | =item No such field "%s" in variable %s of type %s |
560 | |
561 | (F) You tried to access a field of a typed variable where the type |
562 | does not know about the field name. The field names are looked up in |
563 | the %FIELDS hash in the type package at compile time. The %FIELDS hash |
564 | is usually set up with the 'fields' pragma. |
565 | |
566 | =item Out of memory during ridiculously large request |
567 | |
568 | (F) You can't allocate more than 2^31+"small amount" bytes. This error |
569 | is most likely to be caused by a typo in the Perl program. e.g., C<$arr[time]> |
570 | instead of C<$arr[$time]>. |
571 | |
572 | =item Range iterator outside integer range |
573 | |
574 | (F) One (or both) of the numeric arguments to the range operator ".." |
575 | are outside the range which can be represented by integers internally. |
576 | One possible workaround is to force Perl to use magical string |
577 | increment by prepending "0" to your numbers. |
578 | |
579 | =item Recursive inheritance detected while looking for method '%s' in package '%s' |
580 | |
581 | (F) More than 100 levels of inheritance were encountered while invoking a |
582 | method. Probably indicates an unintended loop in your inheritance hierarchy. |
583 | |
584 | =item Reference found where even-sized list expected |
585 | |
586 | (W) You gave a single reference where Perl was expecting a list with |
587 | an even number of elements (for assignment to a hash). This |
588 | usually means that you used the anon hash constructor when you meant |
589 | to use parens. In any case, a hash requires key/value B<pairs>. |
590 | |
591 | %hash = { one => 1, two => 2, }; # WRONG |
592 | %hash = [ qw/ an anon array / ]; # WRONG |
593 | %hash = ( one => 1, two => 2, ); # right |
594 | %hash = qw( one 1 two 2 ); # also fine |
595 | |
596 | =item Undefined value assigned to typeglob |
597 | |
598 | (W) An undefined value was assigned to a typeglob, a la C<*foo = undef>. |
599 | This does nothing. It's possible that you really mean C<undef *foo>. |
600 | |
601 | =item Use of reserved word "%s" is deprecated |
602 | |
603 | (D) The indicated bareword is a reserved word. Future versions of perl |
604 | may use it as a keyword, so you're better off either explicitly quoting |
605 | the word in a manner appropriate for its context of use, or using a |
606 | different name altogether. The warning can be suppressed for subroutine |
607 | names by either adding a C<&> prefix, or using a package qualifier, |
608 | e.g. C<&our()>, or C<Foo::our()>. |
609 | |
610 | =item perl: warning: Setting locale failed. |
611 | |
612 | (S) The whole warning message will look something like: |
613 | |
614 | perl: warning: Setting locale failed. |
615 | perl: warning: Please check that your locale settings: |
616 | LC_ALL = "En_US", |
617 | LANG = (unset) |
618 | are supported and installed on your system. |
619 | perl: warning: Falling back to the standard locale ("C"). |
620 | |
621 | Exactly what were the failed locale settings varies. In the above the |
622 | settings were that the LC_ALL was "En_US" and the LANG had no value. |
623 | This error means that Perl detected that you and/or your system |
624 | administrator have set up the so-called variable system but Perl could |
625 | not use those settings. This was not dead serious, fortunately: there |
626 | is a "default locale" called "C" that Perl can and will use, the |
627 | script will be run. Before you really fix the problem, however, you |
628 | will get the same error message each time you run Perl. How to really |
629 | fix the problem can be found in L<perllocale> section B<LOCALE PROBLEMS>. |
630 | |
631 | =back |
632 | |
633 | |
634 | =head1 Obsolete Diagnostics |
635 | |
636 | =over |
6cc33c6d |
637 | |
429b3afa |
638 | =item Can't mktemp() |
639 | |
640 | (F) The mktemp() routine failed for some reason while trying to process |
641 | a B<-e> switch. Maybe your /tmp partition is full, or clobbered. |
642 | |
643 | =item Can't write to temp file for B<-e>: %s |
644 | |
645 | (F) The write routine failed for some reason while trying to process |
646 | a B<-e> switch. Maybe your /tmp partition is full, or clobbered. |
647 | |
648 | =item Cannot open temporary file |
649 | |
650 | (F) The create routine failed for some reason while trying to process |
651 | a B<-e> switch. Maybe your /tmp partition is full, or clobbered. |
652 | |
653 | |
654 | =back |
655 | |
01784f0d |
656 | =head1 BUGS |
657 | |
658 | If you find what you think is a bug, you might check the headers of |
659 | recently posted articles in the comp.lang.perl.misc newsgroup. |
660 | There may also be information at http://www.perl.com/perl/, the Perl |
661 | Home Page. |
662 | |
663 | If you believe you have an unreported bug, please run the B<perlbug> |
664 | program included with your release. Make sure you trim your bug down |
665 | to a tiny but sufficient test case. Your bug report, along with the |
666 | output of C<perl -V>, will be sent off to <F<perlbug@perl.com>> to be |
667 | analysed by the Perl porting team. |
668 | |
669 | =head1 SEE ALSO |
670 | |
671 | The F<Changes> file for exhaustive details on what changed. |
672 | |
673 | The F<INSTALL> file for how to build Perl. |
674 | |
675 | The F<README> file for general stuff. |
676 | |
677 | The F<Artistic> and F<Copying> files for copyright information. |
678 | |
679 | =head1 HISTORY |
429b3afa |
680 | |
681 | =cut |