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perry |
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PERL5005DELTA |
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!!!PERL5005DELTA |
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NAME |
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DESCRIPTION |
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About the new versioning system |
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Incompatible Changes |
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Core Changes |
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Supported Platforms |
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Modules and Pragmata |
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Utility Changes |
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Documentation Changes |
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New Diagnostics |
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Obsolete Diagnostics |
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Configuration Changes |
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BUGS |
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SEE ALSO |
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HISTORY |
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---- |
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!!NAME |
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perldelta - what's new for perl5.005 |
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!!DESCRIPTION |
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This document describes differences between the 5.004 |
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release and this one. |
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!!About the new versioning system |
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Perl is now developed on two tracks: a maintenance track |
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that makes small, safe updates to released production |
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versions with emphasis on compatibility; and a development |
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track that pursues more aggressive evolution. Maintenance |
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releases (which should be considered production quality) |
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have subversion numbers that run from 1 to |
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49, and development releases (which should be |
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considered ``alpha'' quality) run from 50 to |
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99. |
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Perl 5.005 is the combined product of the new dual-track |
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development scheme. |
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!!Incompatible Changes |
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__WARNING: This version is not binary |
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compatible with Perl 5.004.__ |
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50 |
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Starting with Perl 5.004_50 there were many deep and |
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far-reaching changes to the language internals. If you have |
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dynamically loaded extensions that you built under perl |
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5.003 or 5.004, you can continue to use them with 5.004, but |
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you will need to rebuild and reinstall those extensions to |
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use them 5.005. See ''INSTALL'' for |
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detailed instructions on how to upgrade. |
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__Default installation structure has |
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changed__ |
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The new Configure defaults are designed to allow a smooth |
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upgrade from 5.004 to 5.005, but you should read |
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''INSTALL'' for a detailed discussion of |
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the changes in order to adapt them to your |
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system. |
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__Perl Source Compatibility__ |
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When none of the experimental features are enabled, there |
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should be very few user-visible Perl source compatibility |
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issues. |
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If threads are enabled, then some caveats apply. @_ |
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and $_ become lexical variables. The effect of this |
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should be largely transparent to the user, but there are |
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some boundary conditions under which user will need to be |
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aware of the issues. For example, local(@_) results |
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in a ``Can't localize lexical variable @_ ...'' |
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message. This may be enabled in a future |
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version. |
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Some new keywords have been introduced. These are generally |
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expected to have very little impact on compatibility. See |
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INIT keyword |
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lock keyword |
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qr. |
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Certain barewords are now reserved. Use of these will |
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provoke a warning if you have asked for them with the |
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-w switch. See our is now a reserved |
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word |
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__C Source Compatibility__ |
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There have been a large number of changes in the internals |
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to support the new features in this release. |
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Core sources now require ANSI C |
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compiler |
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An ANSI C compiler is now __required__ to |
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build perl. See ''INSTALL'' . |
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All Perl global variables must now be referenced with an |
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explicit prefix |
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All Perl global variables that are visible for use by |
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extensions now have a PL_ prefix. New extensions |
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should not refer to perl globals by their |
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unqualified names. To preserve sanity, we provide limited |
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backward compatibility for globals that are being widely |
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used like sv_undef and na (which should |
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now be written as PL_sv_undef, PL_na |
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etc.) |
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If you find that your XS extension does not |
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compile anymore because a perl global is not visible, try |
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adding a PL_ prefix to the global and |
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rebuild. |
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It is strongly recommended that all functions in the Perl |
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API that don't begin with perl be |
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referenced with a Perl_ prefix. The bare function |
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names without the Perl_ prefix are supported with |
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macros, but this support may cease in a future |
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release. |
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See `` API LISTING '' in |
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perlguts. |
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Enabling threads has source compatibility |
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issues |
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Perl built with threading enabled requires extensions to use |
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the new dTHR macro to initialize the handle to |
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access per-thread data. If you see a compiler error that |
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talks about the variable thr not being declared |
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(when building a module that has XS code), |
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you need to add dTHR; at the beginning of the block |
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that elicited the error. |
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The API function |
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perl_get_sv( should be used |
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instead of directly accessing perl globals as |
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GvSV(errgv). The API call is |
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backward compatible with existing perls and provides source |
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compatibility with threading is enabled. |
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169 |
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See ``C Source Compatibility'' for more |
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information. |
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__Binary Compatibility__ |
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This version is NOT binary compatible with |
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older versions. All extensions will need to be recompiled. |
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Further binaries built with threads enabled are incompatible |
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with binaries built without. This should largely be |
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transparent to the user, as all binary incompatible |
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configurations have their own unique architecture name, and |
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extension binaries get installed at unique locations. This |
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allows coexistence of several configurations in the same |
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directory hierarchy. See ''INSTALL'' |
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. |
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__Security fixes may affect compatibility__ |
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A few taint leaks and taint omissions have been corrected. |
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This may lead to ``failure'' of scripts that used to work |
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with older versions. Compiling with -DINCOMPLETE_TAINTS |
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provides a perl with minimal amounts of changes to the |
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tainting behavior. But note that the resulting perl will |
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have known insecurities. |
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Oneliners with the -e switch do not create |
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temporary files anymore. |
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__Relaxed new mandatory warnings introduced in |
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5.004__ |
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Many new warnings that were introduced in 5.004 have been |
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made optional. Some of these warnings are still present, but |
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perl's new features make them less often a problem. See |
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``New Diagnostics''. |
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__Licensing__ |
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Perl has a new Social Contract for contributors. See |
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''Porting/Contract''. |
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The license included in much of the Perl documentation has |
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changed. Most of the Perl documentation was previously under |
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the implicit GNU General Public License or |
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the Artistic License (at the user's choice). Now much of the |
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documentation unambiguously states the terms under which it |
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may be distributed. Those terms are in general much less |
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restrictive than the GNU GPL . See perl and |
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the individual perl man pages listed therein. |
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!!Core Changes |
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__Threads__ |
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WARNING: Threading is considered an |
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__experimental__ feature. Details of the implementation |
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may change without notice. There are known limitations and |
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some bugs. These are expected to be fixed in future |
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versions. |
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See ''README .threads''. |
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__Compiler__ |
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WARNING: The Compiler and related tools are |
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considered __experimental__. Features may change without |
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notice, and there are known limitations and bugs. Since the |
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compiler is fully external to perl, the default |
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configuration will build and install it. |
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The Compiler produces three different types of |
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transformations of a perl program. The C backend generates C |
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code that captures perl's state just before execution |
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begins. It eliminates the compile-time overheads of the |
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regular perl interpreter, but the run-time performance |
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remains comparatively the same. The CC |
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backend generates optimized C code equivalent to the code |
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path at run-time. The CC backend has greater |
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potential for big optimizations, but only a few |
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optimizations are implemented currently. The Bytecode |
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backend generates a platform independent bytecode |
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representation of the interpreter's state just before |
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execution. Thus, the Bytecode back end also eliminates much |
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of the compilation overhead of the interpreter. |
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The compiler comes with several valuable |
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utilities. |
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B::Lint is an experimental module to detect and |
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warn about suspicious code, especially the cases that the |
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-w switch does not detect. |
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B::Deparse can be used to demystify perl code, and |
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understand how perl optimizes certain |
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constructs. |
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B::Xref generates cross reference reports of all |
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definition and use of variables, subroutines and formats in |
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a program. |
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B::Showlex show the lexical variables used by a |
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subroutine or file at a glance. |
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perlcc is a simple frontend for compiling |
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perl. |
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See ext/B/README, B, and the respective compiler |
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modules. |
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__Regular Expressions__ |
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Perl's regular expression engine has been seriously |
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overhauled, and many new constructs are supported. Several |
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bugs have been fixed. |
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Here is an itemized summary: |
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Many new and improved optimizations |
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Changes in the RE engine: |
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Unneeded nodes removed; |
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Substrings merged together; |
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New types of nodes to process (SUBEXPR)* and similar expressions |
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quickly, used if the SUBEXPR has no side effects and matches |
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strings of the same length; |
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Better optimizations by lookup for constant substrings; |
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Better search for constants substrings anchored by $ ; |
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Changes in Perl code using RE engine: |
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More optimizations to s/longer/short/; |
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study() was not working; |
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/blah/ may be optimized to an analogue of index() if $ |
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Many bug fixes |
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336 |
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Note that only the major bug fixes are listed here. See |
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''Changes'' for others. |
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340 |
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Backtracking might not restore start of $3. |
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No feedback if max count for * or + on |
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New regular expression constructs |
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The following new syntax elements are |
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supported: |
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(? |
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New operator for precompiled regular |
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expressions |
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358 |
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See ``/qr. |
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361 |
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Other improvements |
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363 |
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364 |
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Better debugging output (possibly with colors), |
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even from non-debugging Perl; |
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RE engine code now looks like C, not like assembler; |
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Behaviour of RE modifiable by `use re' directive; |
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Improved documentation; |
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Test suite significantly extended; |
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Syntax [[:^upper:] etc., reserved inside character classes; |
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Incompatible changes |
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375 |
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376 |
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(?i) localized inside enclosing group; |
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$( is not interpolated into RE any more; |
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/RE/g may match at the same position (with non-zero length) |
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after a zero-length match (bug fix). |
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See perlre and perlop. |
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385 |
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__Improved__ ''malloc()'' |
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387 |
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388 |
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See banner at the beginning of malloc.c for |
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390 |
details. |
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391 |
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392 |
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__Quicksort is internally implemented__ |
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394 |
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395 |
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Perl now contains its own highly optimized ''qsort()'' |
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397 |
routine. The new ''qsort()'' is resistant to inconsistent |
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398 |
comparison functions, so Perl's sort() will not |
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399 |
provoke coredumps any more when given poorly written sort |
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400 |
subroutines. (Some C library qsort()s that were |
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401 |
being used before used to have this problem.) In our |
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402 |
testing, the new qsort() required the minimal |
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403 |
number of pair-wise compares on average, among all known |
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404 |
qsort() implementations. |
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405 |
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406 |
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See perlfunc/sort. |
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408 |
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409 |
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__Reliable signals__ |
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411 |
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412 |
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413 |
Perl's signal handling is susceptible to random crashes, |
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414 |
because signals arrive asynchronously, and the Perl runtime |
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415 |
is not reentrant at arbitrary times. |
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416 |
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417 |
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However, one experimental implementation of reliable signals |
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419 |
is available when threads are enabled. See |
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420 |
Thread::Signal. Also see |
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421 |
''INSTALL'' for how to build a Perl |
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422 |
capable of threads. |
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423 |
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424 |
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425 |
__Reliable stack pointers__ |
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426 |
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427 |
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428 |
The internals now reallocate the perl stack only at |
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429 |
predictable times. In particular, magic calls never trigger |
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430 |
reallocations of the stack, because all reentrancy of the |
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431 |
runtime is handled using a ``stack of stacks''. This should |
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432 |
improve reliability of cached stack pointers in the |
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433 |
internals and in XSUBs. |
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434 |
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435 |
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436 |
__More generous treatment of carriage |
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437 |
returns__ |
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438 |
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439 |
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440 |
Perl used to complain if it encountered literal carriage |
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441 |
returns in scripts. Now they are mostly treated like |
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442 |
whitespace within program text. Inside string literals and |
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443 |
here documents, literal carriage returns are ignored if they |
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444 |
occur paired with linefeeds, or get interpreted as |
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|
445 |
whitespace if they stand alone. This behavior means that |
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|
446 |
literal carriage returns in files should be avoided. You can |
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|
447 |
get the older, more compatible (but less generous) behavior |
|
|
448 |
by defining the preprocessor symbol PERL_STRICT_CR |
|
|
449 |
when building perl. Of course, all this has nothing whatever |
|
|
450 |
to do with how escapes like r are handled within |
|
|
451 |
strings. |
|
|
452 |
|
|
|
453 |
|
|
|
454 |
Note that this doesn't somehow magically allow you to keep |
|
|
455 |
all text files in DOS format. The generous |
|
|
456 |
treatment only applies to files that perl itself parses. If |
|
|
457 |
your C compiler doesn't allow carriage returns in files, you |
|
|
458 |
may still be unable to build modules that need a C |
|
|
459 |
compiler. |
|
|
460 |
|
|
|
461 |
|
|
|
462 |
__Memory leaks__ |
|
|
463 |
|
|
|
464 |
|
|
|
465 |
substr, pos and vec don't leak |
|
|
466 |
memory anymore when used in lvalue context. Many small leaks |
|
|
467 |
that impacted applications that embed multiple interpreters |
|
|
468 |
have been fixed. |
|
|
469 |
|
|
|
470 |
|
|
|
471 |
__Better support for multiple interpreters__ |
|
|
472 |
|
|
|
473 |
|
|
|
474 |
The build-time option -DMULTIPLICITY has had many |
|
|
475 |
of the details reworked. Some previously global variables |
|
|
476 |
that should have been per-interpreter now are. With care, |
|
|
477 |
this allows interpreters to call each other. See the |
|
|
478 |
!PerlInterp extension on CPAN |
|
|
479 |
. |
|
|
480 |
|
|
|
481 |
|
|
|
482 |
__Behavior of__ ''local()'' __on array and hash |
|
|
483 |
elements is now well-defined__ |
|
|
484 |
|
|
|
485 |
|
|
|
486 |
See ``Temporary Values via ''local()'''' in |
|
|
487 |
perlsub. |
|
|
488 |
|
|
|
489 |
|
|
|
490 |
%! __is transparently tied to the Errno |
|
|
491 |
module__ |
|
|
492 |
|
|
|
493 |
|
|
|
494 |
See perlvar, and Errno. |
|
|
495 |
|
|
|
496 |
|
|
|
497 |
__Pseudo-hashes are supported__ |
|
|
498 |
|
|
|
499 |
|
|
|
500 |
See perlref. |
|
|
501 |
|
|
|
502 |
|
|
|
503 |
EXPR foreach EXPR __is supported__ |
|
|
504 |
|
|
|
505 |
|
|
|
506 |
See perlsyn. |
|
|
507 |
|
|
|
508 |
|
|
|
509 |
__Keywords can be globally overridden__ |
|
|
510 |
|
|
|
511 |
|
|
|
512 |
See perlsub. |
|
|
513 |
|
|
|
514 |
|
|
|
515 |
$^E __is meaningful on Win32__ |
|
|
516 |
|
|
|
517 |
|
|
|
518 |
See perlvar. |
|
|
519 |
|
|
|
520 |
|
|
|
521 |
foreach (1..1000000) __optimized__ |
|
|
522 |
|
|
|
523 |
|
|
|
524 |
foreach (1..1000000) is now optimized into a |
|
|
525 |
counting loop. It does not try to allocate a 1000000-size |
|
|
526 |
list anymore. |
|
|
527 |
|
|
|
528 |
|
|
|
529 |
Foo:: __can be used as implicitly quoted package |
|
|
530 |
name__ |
|
|
531 |
|
|
|
532 |
|
|
|
533 |
Barewords caused unintuitive behavior when a subroutine with |
|
|
534 |
the same name as a package happened to be defined. Thus, |
|
|
535 |
new Foo @args, use the result of the call to |
|
|
536 |
Foo() instead of Foo being treated as a |
|
|
537 |
literal. The recommended way to write barewords in the |
|
|
538 |
indirect object slot is new Foo:: @args. Note that |
|
|
539 |
the method new() is called with a first argument of |
|
|
540 |
Foo, not Foo:: when you do |
|
|
541 |
that. |
|
|
542 |
|
|
|
543 |
|
|
|
544 |
exists $Foo::{Bar::} __tests existence of a |
|
|
545 |
package__ |
|
|
546 |
|
|
|
547 |
|
|
|
548 |
It was impossible to test for the existence of a package |
|
|
549 |
without actually creating it before. Now exists |
|
|
550 |
$Foo::{Bar::} can be used to test if the |
|
|
551 |
Foo::Bar namespace has been created. |
|
|
552 |
|
|
|
553 |
|
|
|
554 |
__Better locale support__ |
|
|
555 |
|
|
|
556 |
|
|
|
557 |
See perllocale. |
|
|
558 |
|
|
|
559 |
|
|
|
560 |
__Experimental support for 64-bit |
|
|
561 |
platforms__ |
|
|
562 |
|
|
|
563 |
|
|
|
564 |
Perl5 has always had 64-bit support on systems with 64-bit |
|
|
565 |
longs. Starting with 5.005, the beginnings of experimental |
|
|
566 |
support for systems with 32-bit long and 64-bit 'long long' |
|
|
567 |
integers has been added. If you add -DUSE_LONG_LONG to your |
|
|
568 |
ccflags in config.sh (or manually define it in perl.h) then |
|
|
569 |
perl will be built with 'long long' support. There will be |
|
|
570 |
many compiler warnings, and the resultant perl may not work |
|
|
571 |
on all systems. There are many other issues related to |
|
|
572 |
third-party extensions and libraries. This option exists to |
|
|
573 |
allow people to work on those issues. |
|
|
574 |
|
|
|
575 |
|
|
|
576 |
''prototype()'' __returns useful results on |
|
|
577 |
builtins__ |
|
|
578 |
|
|
|
579 |
|
|
|
580 |
See ``prototype'' in perlfunc. |
|
|
581 |
|
|
|
582 |
|
|
|
583 |
__Extended support for exception handling__ |
|
|
584 |
|
|
|
585 |
|
|
|
586 |
die() now accepts a reference value, and |
|
|
587 |
$@ gets set to that value in exception traps. This |
|
|
588 |
makes it possible to propagate exception objects. This is an |
|
|
589 |
undocumented __experimental__ feature. |
|
|
590 |
|
|
|
591 |
|
|
|
592 |
__Re-blessing in__ ''DESTROY ()'' |
|
|
593 |
__supported for chaining__ ''DESTROY |
|
|
594 |
()'' __methods__ |
|
|
595 |
|
|
|
596 |
|
|
|
597 |
See ``Destructors'' in perlobj. |
|
|
598 |
|
|
|
599 |
|
|
|
600 |
__All__ printf __format conversions are handled |
|
|
601 |
internally__ |
|
|
602 |
|
|
|
603 |
|
|
|
604 |
See ``printf'' in perlfunc. |
|
|
605 |
|
|
|
606 |
|
|
|
607 |
__New__ INIT __keyword__ |
|
|
608 |
|
|
|
609 |
|
|
|
610 |
INIT subs are like BEGIN and END, |
|
|
611 |
but they get run just before the perl runtime begins |
|
|
612 |
execution. e.g., the Perl Compiler makes use of |
|
|
613 |
INIT blocks to initialize and resolve pointers to |
|
|
614 |
XSUBs. |
|
|
615 |
|
|
|
616 |
|
|
|
617 |
__New__ lock __keyword__ |
|
|
618 |
|
|
|
619 |
|
|
|
620 |
The lock keyword is the fundamental synchronization |
|
|
621 |
primitive in threaded perl. When threads are not enabled, it |
|
|
622 |
is currently a noop. |
|
|
623 |
|
|
|
624 |
|
|
|
625 |
To minimize impact on source compatibility this keyword is |
|
|
626 |
``weak'', i.e., any user-defined subroutine of the same name |
|
|
627 |
overrides it, unless a use Thread has been |
|
|
628 |
seen. |
|
|
629 |
|
|
|
630 |
|
|
|
631 |
__New__ qr// __operator__ |
|
|
632 |
|
|
|
633 |
|
|
|
634 |
The qr// operator, which is syntactically similar |
|
|
635 |
to the other quote-like operators, is used to create |
|
|
636 |
precompiled regular expressions. This compiled form can now |
|
|
637 |
be explicitly passed around in variables, and interpolated |
|
|
638 |
in other regular expressions. See perlop. |
|
|
639 |
|
|
|
640 |
|
|
|
641 |
our __is now a reserved word__ |
|
|
642 |
|
|
|
643 |
|
|
|
644 |
Calling a subroutine with the name our will now |
|
|
645 |
provoke a warning when using the -w |
|
|
646 |
switch. |
|
|
647 |
|
|
|
648 |
|
|
|
649 |
__Tied arrays are now fully supported__ |
|
|
650 |
|
|
|
651 |
|
|
|
652 |
See Tie::Array. |
|
|
653 |
|
|
|
654 |
|
|
|
655 |
__Tied handles support is better__ |
|
|
656 |
|
|
|
657 |
|
|
|
658 |
Several missing hooks have been added. There is also a new |
|
|
659 |
base class for TIEARRAY implementations. See |
|
|
660 |
Tie::Array. |
|
|
661 |
|
|
|
662 |
|
|
|
663 |
__4th argument to substr__ |
|
|
664 |
|
|
|
665 |
|
|
|
666 |
''substr()'' can now both return and replace in one |
|
|
667 |
operation. The optional 4th argument is the replacement |
|
|
668 |
string. See ``substr'' in perlfunc. |
|
|
669 |
|
|
|
670 |
|
|
|
671 |
__Negative LENGTH argument to |
|
|
672 |
splice__ |
|
|
673 |
|
|
|
674 |
|
|
|
675 |
''splice()'' with a negative LENGTH |
|
|
676 |
argument now work similar to what the LENGTH |
|
|
677 |
did for ''substr()''. Previously a negative |
|
|
678 |
LENGTH was treated as 0. See ``splice'' in |
|
|
679 |
perlfunc. |
|
|
680 |
|
|
|
681 |
|
|
|
682 |
__Magic lvalues are now more magical__ |
|
|
683 |
|
|
|
684 |
|
|
|
685 |
When you say something like substr($x, 5) = |
|
|
686 |
, the scalar returned by ''substr()'' |
|
|
687 |
is special, in that any modifications to it affect |
|
|
688 |
$x. (This is called a 'magic lvalue' because an |
|
|
689 |
'lvalue' is something on the left side of an assignment.) |
|
|
690 |
Normally, this is exactly what you would expect to happen, |
|
|
691 |
but Perl uses the same magic if you use ''substr()'', |
|
|
692 |
''pos()'', or ''vec()'' in a context where they might |
|
|
693 |
be modified, like taking a reference with \ or as |
|
|
694 |
an argument to a sub that modifies @_. In previous |
|
|
695 |
versions, this 'magic' only went one way, but now changes to |
|
|
696 |
the scalar the magic refers to ($x in the above example) |
|
|
697 |
affect the magic lvalue too. For instance, this code now |
|
|
698 |
acts differently: |
|
|
699 |
|
|
|
700 |
|
|
|
701 |
$x = |
|
|
702 |
In previous versions, this would print ``hello'', but it now prints ``g'bye''. |
|
|
703 |
|
|
|
704 |
|
|
|
705 |
____ |
|
|
706 |
|
|
|
707 |
|
|
|
708 |
If $/ is a reference to an integer, or a scalar |
|
|
709 |
that holds an integer, |
|
|
710 |
!!Supported Platforms |
|
|
711 |
|
|
|
712 |
|
|
|
713 |
Configure has many incremental improvements. Site-wide |
|
|
714 |
policy for building perl can now be made persistent, via |
|
|
715 |
Policy.sh. Configure also records the command-line arguments |
|
|
716 |
used in ''config.sh''. |
|
|
717 |
|
|
|
718 |
|
|
|
719 |
__New Platforms__ |
|
|
720 |
|
|
|
721 |
|
|
|
722 |
BeOS is now supported. See ''README |
|
|
723 |
.beos''. |
|
|
724 |
|
|
|
725 |
|
|
|
726 |
DOS is now supported under the |
|
|
727 |
DJGPP tools. See ''README |
|
|
728 |
.dos'' (installed as perldos on some |
|
|
729 |
systems). |
|
|
730 |
|
|
|
731 |
|
|
|
732 |
MiNT is now supported. See ''README |
|
|
733 |
.mint''. |
|
|
734 |
|
|
|
735 |
|
|
|
736 |
MPE/iX is now supported. See ''README |
|
|
737 |
.mpeix''. |
|
|
738 |
|
|
|
739 |
|
|
|
740 |
MVS (aka OS390 , aka Open |
|
|
741 |
Edition) is now supported. See ''README |
|
|
742 |
.os390'' (installed as perlos390 on some |
|
|
743 |
systems). |
|
|
744 |
|
|
|
745 |
|
|
|
746 |
Stratus VOS is now supported. See |
|
|
747 |
''README .vos''. |
|
|
748 |
|
|
|
749 |
|
|
|
750 |
__Changes in existing support__ |
|
|
751 |
|
|
|
752 |
|
|
|
753 |
Win32 support has been vastly enhanced. Support for Perl |
|
|
754 |
Object, a C ++ encapsulation of Perl. |
|
|
755 |
GCC and EGCS are now supported |
|
|
756 |
on Win32. See ''README .win32'', aka |
|
|
757 |
perlwin32. |
|
|
758 |
|
|
|
759 |
|
|
|
760 |
VMS configuration system has been rewritten. |
|
|
761 |
See ''README .vms'' (installed as |
|
|
762 |
README_vms on some systems). |
|
|
763 |
|
|
|
764 |
|
|
|
765 |
The hints files for most Unix platforms have seen |
|
|
766 |
incremental improvements. |
|
|
767 |
!!Modules and Pragmata |
|
|
768 |
|
|
|
769 |
|
|
|
770 |
__New Modules__ |
|
|
771 |
|
|
|
772 |
|
|
|
773 |
B |
|
|
774 |
|
|
|
775 |
|
|
|
776 |
Perl compiler and tools. See B. |
|
|
777 |
|
|
|
778 |
|
|
|
779 |
Data::Dumper |
|
|
780 |
|
|
|
781 |
|
|
|
782 |
A module to pretty print Perl data. See |
|
|
783 |
Data::Dumper. |
|
|
784 |
|
|
|
785 |
|
|
|
786 |
Dumpvalue |
|
|
787 |
|
|
|
788 |
|
|
|
789 |
A module to dump perl values to the screen. See |
|
|
790 |
Dumpvalue. |
|
|
791 |
|
|
|
792 |
|
|
|
793 |
Errno |
|
|
794 |
|
|
|
795 |
|
|
|
796 |
A module to look up errors more conveniently. See |
|
|
797 |
Errno. |
|
|
798 |
|
|
|
799 |
|
|
|
800 |
File::Spec |
|
|
801 |
|
|
|
802 |
|
|
|
803 |
A portable API for file |
|
|
804 |
operations. |
|
|
805 |
|
|
|
806 |
|
|
|
807 |
!ExtUtils::Installed |
|
|
808 |
|
|
|
809 |
|
|
|
810 |
Query and manage installed modules. |
|
|
811 |
|
|
|
812 |
|
|
|
813 |
!ExtUtils::Packlist |
|
|
814 |
|
|
|
815 |
|
|
|
816 |
Manipulate .packlist files. |
|
|
817 |
|
|
|
818 |
|
|
|
819 |
Fatal |
|
|
820 |
|
|
|
821 |
|
|
|
822 |
Make functions/builtins succeed or die. |
|
|
823 |
|
|
|
824 |
|
|
|
825 |
IPC::SysV |
|
|
826 |
|
|
|
827 |
|
|
|
828 |
Constants and other support infrastructure for System V |
|
|
829 |
IPC operations in perl. |
|
|
830 |
|
|
|
831 |
|
|
|
832 |
Test |
|
|
833 |
|
|
|
834 |
|
|
|
835 |
A framework for writing testsuites. |
|
|
836 |
|
|
|
837 |
|
|
|
838 |
Tie::Array |
|
|
839 |
|
|
|
840 |
|
|
|
841 |
Base class for tied arrays. |
|
|
842 |
|
|
|
843 |
|
|
|
844 |
Tie::Handle |
|
|
845 |
|
|
|
846 |
|
|
|
847 |
Base class for tied handles. |
|
|
848 |
|
|
|
849 |
|
|
|
850 |
Thread |
|
|
851 |
|
|
|
852 |
|
|
|
853 |
Perl thread creation, manipulation, and |
|
|
854 |
support. |
|
|
855 |
|
|
|
856 |
|
|
|
857 |
attrs |
|
|
858 |
|
|
|
859 |
|
|
|
860 |
Set subroutine attributes. |
|
|
861 |
|
|
|
862 |
|
|
|
863 |
fields |
|
|
864 |
|
|
|
865 |
|
|
|
866 |
Compile-time class fields. |
|
|
867 |
|
|
|
868 |
|
|
|
869 |
re |
|
|
870 |
|
|
|
871 |
|
|
|
872 |
Various pragmata to control behavior of regular |
|
|
873 |
expressions. |
|
|
874 |
|
|
|
875 |
|
|
|
876 |
__Changes in existing modules__ |
|
|
877 |
|
|
|
878 |
|
|
|
879 |
Benchmark |
|
|
880 |
|
|
|
881 |
|
|
|
882 |
You can now run tests for ''x'' seconds instead of |
|
|
883 |
guessing the right number of tests to run. |
|
|
884 |
|
|
|
885 |
|
|
|
886 |
Keeps better time. |
|
|
887 |
|
|
|
888 |
|
|
|
889 |
Carp |
|
|
890 |
|
|
|
891 |
|
|
|
892 |
Carp has a new function ''cluck()''. ''cluck()'' |
|
|
893 |
warns, like ''carp()'', but also adds a stack backtrace |
|
|
894 |
to the error message, like ''confess()''. |
|
|
895 |
|
|
|
896 |
|
|
|
897 |
CGI |
|
|
898 |
|
|
|
899 |
|
|
|
900 |
CGI has been updated to version |
|
|
901 |
2.42. |
|
|
902 |
|
|
|
903 |
|
|
|
904 |
Fcntl |
|
|
905 |
|
|
|
906 |
|
|
|
907 |
More Fcntl constants added: F_SETLK64, F_SETLKW64, |
|
|
908 |
O_LARGEFILE for large (more than 4G) file access (the 64-bit |
|
|
909 |
support is not yet working, though, so no need to get overly |
|
|
910 |
excited), Free/Net/OpenBSD locking behaviour flags F_FLOCK, |
|
|
911 |
F_POSIX, Linux F_SHLCK, and O_ACCMODE: the mask of O_RDONLY, |
|
|
912 |
O_WRONLY, and O_RDWR. |
|
|
913 |
|
|
|
914 |
|
|
|
915 |
Math::Complex |
|
|
916 |
|
|
|
917 |
|
|
|
918 |
The accessors methods Re, Im, arg, abs, rho, theta, methods |
|
|
919 |
can ($z-Re()'') now also act as mutators |
|
|
920 |
($z-''Re''(3)). |
|
|
921 |
|
|
|
922 |
|
|
|
923 |
Math::Trig |
|
|
924 |
|
|
|
925 |
|
|
|
926 |
A little bit of radial trigonometry (cylindrical and |
|
|
927 |
spherical) added, for example the great circle |
|
|
928 |
distance. |
|
|
929 |
|
|
|
930 |
|
|
|
931 |
POSIX |
|
|
932 |
|
|
|
933 |
|
|
|
934 |
POSIX now has its own platform-specific hints |
|
|
935 |
files. |
|
|
936 |
|
|
|
937 |
|
|
|
938 |
DB_File |
|
|
939 |
|
|
|
940 |
|
|
|
941 |
DB_File supports version 2.x of Berkeley DB . |
|
|
942 |
See ext/DB_File/Changes. |
|
|
943 |
|
|
|
944 |
|
|
|
945 |
!MakeMaker |
|
|
946 |
|
|
|
947 |
|
|
|
948 |
!MakeMaker now supports writing empty makefiles, provides a |
|
|
949 |
way to specify that site ''umask()'' policy should be |
|
|
950 |
honored. There is also better support for manipulation of |
|
|
951 |
.packlist files, and getting information about installed |
|
|
952 |
modules. |
|
|
953 |
|
|
|
954 |
|
|
|
955 |
Extensions that have both architecture-dependent and |
|
|
956 |
architecture-independent files are now always installed |
|
|
957 |
completely in the architecture-dependent locations. |
|
|
958 |
Previously, the shareable parts were shared both across |
|
|
959 |
architectures and across perl versions and were therefore |
|
|
960 |
liable to be overwritten with newer versions that might have |
|
|
961 |
subtle incompatibilities. |
|
|
962 |
|
|
|
963 |
|
|
|
964 |
CPAN |
|
|
965 |
|
|
|
966 |
|
|
|
967 |
See CPAN |
|
|
968 |
. |
|
|
969 |
|
|
|
970 |
|
|
|
971 |
Cwd |
|
|
972 |
|
|
|
973 |
|
|
|
974 |
Cwd::cwd is faster on most platforms. |
|
|
975 |
!!Utility Changes |
|
|
976 |
|
|
|
977 |
|
|
|
978 |
h2ph and related utilities have been vastly |
|
|
979 |
overhauled. |
|
|
980 |
|
|
|
981 |
|
|
|
982 |
perlcc, a new experimental front end for the |
|
|
983 |
compiler is available. |
|
|
984 |
|
|
|
985 |
|
|
|
986 |
The crude GNU configure emulator is |
|
|
987 |
now called configure.gnu to avoid trampling on |
|
|
988 |
Configure under case-insensitive |
|
|
989 |
filesystems. |
|
|
990 |
|
|
|
991 |
|
|
|
992 |
perldoc used to be rather slow. The slower features |
|
|
993 |
are now optional. In particular, case-insensitive searches |
|
|
994 |
need the -i switch, and recursive searches need |
|
|
995 |
-r. You can set these switches in the |
|
|
996 |
PERLDOC environment variable to get the old |
|
|
997 |
behavior. |
|
|
998 |
!!Documentation Changes |
|
|
999 |
|
|
|
1000 |
|
|
|
1001 |
Config.pm now has a glossary of variables. |
|
|
1002 |
|
|
|
1003 |
|
|
|
1004 |
''Porting/patching.pod'' has detailed instructions on how |
|
|
1005 |
to create and submit patches for perl. |
|
|
1006 |
|
|
|
1007 |
|
|
|
1008 |
perlport specifies guidelines on how to write |
|
|
1009 |
portably. |
|
|
1010 |
|
|
|
1011 |
|
|
|
1012 |
perlmodinstall describes how to fetch and install modules |
|
|
1013 |
from CPAN sites. |
|
|
1014 |
|
|
|
1015 |
|
|
|
1016 |
Some more Perl traps are documented now. See |
|
|
1017 |
perltrap. |
|
|
1018 |
|
|
|
1019 |
|
|
|
1020 |
perlopentut gives a tutorial on using |
|
|
1021 |
''open()''. |
|
|
1022 |
|
|
|
1023 |
|
|
|
1024 |
perlreftut gives a tutorial on references. |
|
|
1025 |
|
|
|
1026 |
|
|
|
1027 |
perlthrtut gives a tutorial on threads. |
|
|
1028 |
!!New Diagnostics |
|
|
1029 |
|
|
|
1030 |
|
|
|
1031 |
Ambiguous call resolved as CORE::%s(), qualify as such or |
|
|
1032 |
use |
|
|
1033 |
|
|
|
1034 |
|
|
|
1035 |
(W) A subroutine you have declared has the same name as a |
|
|
1036 |
Perl keyword, and you have used the name without |
|
|
1037 |
qualification for calling one or the other. Perl decided to |
|
|
1038 |
call the builtin because the subroutine is not |
|
|
1039 |
imported. |
|
|
1040 |
|
|
|
1041 |
|
|
|
1042 |
To force interpretation as a subroutine call, either put an |
|
|
1043 |
ampersand before the subroutine name, or qualify the name |
|
|
1044 |
with its package. Alternatively, you can import the |
|
|
1045 |
subroutine (or pretend that it's imported with the use |
|
|
1046 |
subs pragma). |
|
|
1047 |
|
|
|
1048 |
|
|
|
1049 |
To silently interpret it as the Perl operator, use the |
|
|
1050 |
CORE:: prefix on the operator (e.g. |
|
|
1051 |
CORE::log($x)) or by declaring the subroutine to be |
|
|
1052 |
an object method (see attrs). |
|
|
1053 |
|
|
|
1054 |
|
|
|
1055 |
Bad index while coercing array into hash |
|
|
1056 |
|
|
|
1057 |
|
|
|
1058 |
(F) The index looked up in the hash found as the 0'th |
|
|
1059 |
element of a pseudo-hash is not legal. Index values must be |
|
|
1060 |
at 1 or greater. See perlref. |
|
|
1061 |
|
|
|
1062 |
|
|
|
1063 |
Bareword ``%s'' refers to nonexistent package |
|
|
1064 |
|
|
|
1065 |
|
|
|
1066 |
(W) You used a qualified bareword of the form |
|
|
1067 |
Foo::, but the compiler saw no other uses of that |
|
|
1068 |
namespace before that point. Perhaps you need to predeclare |
|
|
1069 |
a package? |
|
|
1070 |
|
|
|
1071 |
|
|
|
1072 |
Can't call method ``%s'' on an undefined value |
|
|
1073 |
|
|
|
1074 |
|
|
|
1075 |
(F) You used the syntax of a method call, but the slot |
|
|
1076 |
filled by the object reference or package name contains an |
|
|
1077 |
undefined value. Something like this will reproduce the |
|
|
1078 |
error: |
|
|
1079 |
|
|
|
1080 |
|
|
|
1081 |
$BADREF = 42; |
|
|
1082 |
process $BADREF 1,2,3; |
|
|
1083 |
$BADREF- |
|
|
1084 |
|
|
|
1085 |
|
|
|
1086 |
Can't check filesystem of script ``%s'' for |
|
|
1087 |
nosuid |
|
|
1088 |
|
|
|
1089 |
|
|
|
1090 |
(P) For some reason you can't check the filesystem of the |
|
|
1091 |
script for nosuid. |
|
|
1092 |
|
|
|
1093 |
|
|
|
1094 |
Can't coerce array into hash |
|
|
1095 |
|
|
|
1096 |
|
|
|
1097 |
(F) You used an array where a hash was expected, but the |
|
|
1098 |
array has no information on how to map from keys to array |
|
|
1099 |
indices. You can do that only with arrays that have a hash |
|
|
1100 |
reference at index 0. |
|
|
1101 |
|
|
|
1102 |
|
|
|
1103 |
Can't goto subroutine from an eval-string |
|
|
1104 |
|
|
|
1105 |
|
|
|
1106 |
(F) The ``goto subroutine'' call can't be used to jump out |
|
|
1107 |
of an eval ``string''. (You can use it to jump out of an |
|
|
1108 |
eval { BLOCK }, but you probably don't want |
|
|
1109 |
to.) |
|
|
1110 |
|
|
|
1111 |
|
|
|
1112 |
Can't localize pseudo-hash element |
|
|
1113 |
|
|
|
1114 |
|
|
|
1115 |
(F) You said something like local $ar-, |
|
|
1116 |
where $ar is a reference to a pseudo-hash. That |
|
|
1117 |
hasn't been implemented yet, but you can get a similar |
|
|
1118 |
effect by localizing the corresponding array element |
|
|
1119 |
directly -- local |
|
|
1120 |
$ar-. |
|
|
1121 |
|
|
|
1122 |
|
|
|
1123 |
Can't use %%! because Errno.pm is not available |
|
|
1124 |
|
|
|
1125 |
|
|
|
1126 |
(F) The first time the %! hash is used, perl automatically |
|
|
1127 |
loads the Errno.pm module. The Errno module is expected to |
|
|
1128 |
tie the %! hash to provide symbolic names for $! |
|
|
1129 |
errno values. |
|
|
1130 |
|
|
|
1131 |
|
|
|
1132 |
Cannot find an opnumber for ``%s'' |
|
|
1133 |
|
|
|
1134 |
|
|
|
1135 |
(F) A string of a form CORE::word was given to |
|
|
1136 |
''prototype()'', but there is no builtin with the name |
|
|
1137 |
word. |
|
|
1138 |
|
|
|
1139 |
|
|
|
1140 |
Character class syntax [[. .] is reserved for future |
|
|
1141 |
extensions |
|
|
1142 |
|
|
|
1143 |
|
|
|
1144 |
(W) Within regular expression character classes ([[]) the |
|
|
1145 |
syntax beginning with ``[[.'' and ending with ``.]'' is |
|
|
1146 |
reserved for future extensions. If you need to represent |
|
|
1147 |
those character sequences inside a regular expression |
|
|
1148 |
character class, just quote the square brackets with the |
|
|
1149 |
backslash: ``[[.'' and ``.]''. |
|
|
1150 |
|
|
|
1151 |
|
|
|
1152 |
Character class syntax [[: :] is reserved for future |
|
|
1153 |
extensions |
|
|
1154 |
|
|
|
1155 |
|
|
|
1156 |
(W) Within regular expression character classes ([[]) the |
|
|
1157 |
syntax beginning with ``[[:'' and ending with ``:]'' is |
|
|
1158 |
reserved for future extensions. If you need to represent |
|
|
1159 |
those character sequences inside a regular expression |
|
|
1160 |
character class, just quote the square brackets with the |
|
|
1161 |
backslash: ``[[:'' and ``:]''. |
|
|
1162 |
|
|
|
1163 |
|
|
|
1164 |
Character class syntax [[= =] is reserved for future |
|
|
1165 |
extensions |
|
|
1166 |
|
|
|
1167 |
|
|
|
1168 |
(W) Within regular expression character classes ([[]) the |
|
|
1169 |
syntax beginning with ``[[='' and ending with ``=]'' is |
|
|
1170 |
reserved for future extensions. If you need to represent |
|
|
1171 |
those character sequences inside a regular expression |
|
|
1172 |
character class, just quote the square brackets with the |
|
|
1173 |
backslash: ``[[='' and ``=]''. |
|
|
1174 |
|
|
|
1175 |
|
|
|
1176 |
%s: Eval-group in insecure regular expression |
|
|
1177 |
|
|
|
1178 |
|
|
|
1179 |
(F) Perl detected tainted data when trying to compile a |
|
|
1180 |
regular expression that contains the (?{ ... }) |
|
|
1181 |
zero-width assertion, which is unsafe. See ``(?{ code })'' |
|
|
1182 |
in perlre, and perlsec. |
|
|
1183 |
|
|
|
1184 |
|
|
|
1185 |
%s: Eval-group not allowed, use re 'eval' |
|
|
1186 |
|
|
|
1187 |
|
|
|
1188 |
(F) A regular expression contained the (?{ ... }) |
|
|
1189 |
zero-width assertion, but that construct is only allowed |
|
|
1190 |
when the use re 'eval' pragma is in effect. See |
|
|
1191 |
``(?{ code })'' in perlre. |
|
|
1192 |
|
|
|
1193 |
|
|
|
1194 |
%s: Eval-group not allowed at run time |
|
|
1195 |
|
|
|
1196 |
|
|
|
1197 |
(F) Perl tried to compile a regular expression containing |
|
|
1198 |
the (?{ ... }) zero-width assertion at run time, as |
|
|
1199 |
it would when the pattern contains interpolated values. |
|
|
1200 |
Since that is a security risk, it is not allowed. If you |
|
|
1201 |
insist, you may still do this by explicitly building the |
|
|
1202 |
pattern from an interpolated string at run time and using |
|
|
1203 |
that in an ''eval()''. See ``(?{ code })'' in |
|
|
1204 |
perlre. |
|
|
1205 |
|
|
|
1206 |
|
|
|
1207 |
Explicit blessing to '' (assuming package main) |
|
|
1208 |
|
|
|
1209 |
|
|
|
1210 |
(W) You are blessing a reference to a zero length string. |
|
|
1211 |
This has the effect of blessing the reference into the |
|
|
1212 |
package main. This is usually not what you want. Consider |
|
|
1213 |
providing a default target package, e.g. bless($ref, |
|
|
1214 |
$p '!MyPackage'); |
|
|
1215 |
|
|
|
1216 |
|
|
|
1217 |
Illegal hex digit ignored |
|
|
1218 |
|
|
|
1219 |
|
|
|
1220 |
(W) You may have tried to use a character other than 0 - 9 |
|
|
1221 |
or A - F in a hexadecimal number. Interpretation of the |
|
|
1222 |
hexadecimal number stopped before the illegal |
|
|
1223 |
character. |
|
|
1224 |
|
|
|
1225 |
|
|
|
1226 |
No such array field |
|
|
1227 |
|
|
|
1228 |
|
|
|
1229 |
(F) You tried to access an array as a hash, but the field |
|
|
1230 |
name used is not defined. The hash at index 0 should map all |
|
|
1231 |
valid field names to array indices for that to |
|
|
1232 |
work. |
|
|
1233 |
|
|
|
1234 |
|
|
|
1235 |
No such field ``%s'' in variable %s of type |
|
|
1236 |
%s |
|
|
1237 |
|
|
|
1238 |
|
|
|
1239 |
(F) You tried to access a field of a typed variable where |
|
|
1240 |
the type does not know about the field name. The field names |
|
|
1241 |
are looked up in the %FIELDS hash in the type |
|
|
1242 |
package at compile time. The %FIELDS hash is |
|
|
1243 |
usually set up with the 'fields' pragma. |
|
|
1244 |
|
|
|
1245 |
|
|
|
1246 |
Out of memory during ridiculously large request |
|
|
1247 |
|
|
|
1248 |
|
|
|
1249 |
(F) You can't allocate more than 2^31+``small amount'' |
|
|
1250 |
bytes. This error is most likely to be caused by a typo in |
|
|
1251 |
the Perl program. e.g., $arr[[time] instead of |
|
|
1252 |
$arr[[$time]. |
|
|
1253 |
|
|
|
1254 |
|
|
|
1255 |
Range iterator outside integer range |
|
|
1256 |
|
|
|
1257 |
|
|
|
1258 |
(F) One (or both) of the numeric arguments to the range |
|
|
1259 |
operator ``..'' are outside the range which can be |
|
|
1260 |
represented by integers internally. One possible workaround |
|
|
1261 |
is to force Perl to use magical string increment by |
|
|
1262 |
prepending ``0'' to your numbers. |
|
|
1263 |
|
|
|
1264 |
|
|
|
1265 |
Recursive inheritance detected while looking for method '%s' |
|
|
1266 |
%s |
|
|
1267 |
|
|
|
1268 |
|
|
|
1269 |
(F) More than 100 levels of inheritance were encountered |
|
|
1270 |
while invoking a method. Probably indicates an unintended |
|
|
1271 |
loop in your inheritance hierarchy. |
|
|
1272 |
|
|
|
1273 |
|
|
|
1274 |
Reference found where even-sized list expected |
|
|
1275 |
|
|
|
1276 |
|
|
|
1277 |
(W) You gave a single reference where Perl was expecting a |
|
|
1278 |
list with an even number of elements (for assignment to a |
|
|
1279 |
hash). This usually means that you used the anon hash |
|
|
1280 |
constructor when you meant to use parens. In any case, a |
|
|
1281 |
hash requires key/value __pairs__. |
|
|
1282 |
|
|
|
1283 |
|
|
|
1284 |
%hash = { one = |
|
|
1285 |
|
|
|
1286 |
|
|
|
1287 |
Undefined value assigned to typeglob |
|
|
1288 |
|
|
|
1289 |
|
|
|
1290 |
(W) An undefined value was assigned to a typeglob, a la |
|
|
1291 |
*foo = undef. This does nothing. It's possible that |
|
|
1292 |
you really mean undef *foo. |
|
|
1293 |
|
|
|
1294 |
|
|
|
1295 |
Use of reserved word ``%s'' is deprecated |
|
|
1296 |
|
|
|
1297 |
|
|
|
1298 |
(D) The indicated bareword is a reserved word. Future |
|
|
1299 |
versions of perl may use it as a keyword, so you're better |
|
|
1300 |
off either explicitly quoting the word in a manner |
|
|
1301 |
appropriate for its context of use, or using a different |
|
|
1302 |
name altogether. The warning can be suppressed for |
|
|
1303 |
subroutine names by either adding a prefix, |
|
|
1304 |
or using a package qualifier, e.g. , or |
|
|
1305 |
Foo::our(). |
|
|
1306 |
|
|
|
1307 |
|
|
|
1308 |
perl: warning: Setting locale failed. |
|
|
1309 |
|
|
|
1310 |
|
|
|
1311 |
(S) The whole warning message will look something |
|
|
1312 |
like: |
|
|
1313 |
|
|
|
1314 |
|
|
|
1315 |
perl: warning: Setting locale failed. |
|
|
1316 |
perl: warning: Please check that your locale settings: |
|
|
1317 |
LC_ALL = |
|
|
1318 |
Exactly what were the failed locale settings varies. In the above the settings were that the LC_ALL was ``En_US'' and the LANG had no value. This error means that Perl detected that you and/or your system administrator have set up the so-called variable system but Perl could not use those settings. This was not dead serious, fortunately: there is a ``default locale'' called ``C'' that Perl can and will use, the script will be run. Before you really fix the problem, however, you will get the same error message each time you run Perl. How to really fix the problem can be found in `` LOCALE PROBLEMS '' in perllocale. |
|
|
1319 |
!!Obsolete Diagnostics |
|
|
1320 |
|
|
|
1321 |
|
|
|
1322 |
Can't ''mktemp()'' |
|
|
1323 |
|
|
|
1324 |
|
|
|
1325 |
(F) The ''mktemp()'' routine failed for some reason while |
|
|
1326 |
trying to process a __-e__ switch. Maybe your /tmp |
|
|
1327 |
partition is full, or clobbered. |
|
|
1328 |
|
|
|
1329 |
|
|
|
1330 |
Removed because __-e__ doesn't use temporary files any |
|
|
1331 |
more. |
|
|
1332 |
|
|
|
1333 |
|
|
|
1334 |
Can't write to temp file for __-e__: |
|
|
1335 |
%s |
|
|
1336 |
|
|
|
1337 |
|
|
|
1338 |
(F) The write routine failed for some reason while trying to |
|
|
1339 |
process a __-e__ switch. Maybe your /tmp partition is |
|
|
1340 |
full, or clobbered. |
|
|
1341 |
|
|
|
1342 |
|
|
|
1343 |
Removed because __-e__ doesn't use temporary files any |
|
|
1344 |
more. |
|
|
1345 |
|
|
|
1346 |
|
|
|
1347 |
Cannot open temporary file |
|
|
1348 |
|
|
|
1349 |
|
|
|
1350 |
(F) The create routine failed for some reason while trying |
|
|
1351 |
to process a __-e__ switch. Maybe your /tmp partition is |
|
|
1352 |
full, or clobbered. |
|
|
1353 |
|
|
|
1354 |
|
|
|
1355 |
Removed because __-e__ doesn't use temporary files any |
|
|
1356 |
more. |
|
|
1357 |
|
|
|
1358 |
|
|
|
1359 |
regexp too big |
|
|
1360 |
|
|
|
1361 |
|
|
|
1362 |
(F) The current implementation of regular expressions uses |
|
|
1363 |
shorts as address offsets within a string. Unfortunately |
|
|
1364 |
this means that if the regular expression compiles to longer |
|
|
1365 |
than 32767, it'll blow up. Usually when you want a regular |
|
|
1366 |
expression this big, there is a better way to do it with |
|
|
1367 |
multiple statements. See perlre. |
|
|
1368 |
!!Configuration Changes |
|
|
1369 |
|
|
|
1370 |
|
|
|
1371 |
You can use ``Configure -Uinstallusrbinperl'' which causes |
|
|
1372 |
installperl to skip installing perl also as /usr/bin/perl. |
|
|
1373 |
This is useful if you prefer not to modify /usr/bin for some |
|
|
1374 |
reason or another but harmful because many scripts assume to |
|
|
1375 |
find Perl in /usr/bin/perl. |
|
|
1376 |
!!BUGS |
|
|
1377 |
|
|
|
1378 |
|
|
|
1379 |
If you find what you think is a bug, you might check the |
|
|
1380 |
headers of recently posted articles in the |
|
|
1381 |
comp.lang.perl.misc newsgroup. There may also be information |
|
|
1382 |
at http://www.perl.com/perl/, the Perl Home |
|
|
1383 |
Page. |
|
|
1384 |
|
|
|
1385 |
|
|
|
1386 |
If you believe you have an unreported bug, please run the |
|
|
1387 |
__perlbug__ program included with your release. Make sure |
|
|
1388 |
you trim your bug down to a tiny but sufficient test case. |
|
|
1389 |
Your bug report, along with the output of perl -V, |
|
|
1390 |
will be sent off to perlbug@perl.com'' |
|
|
1391 |
'' |
|
|
1392 |
!!SEE ALSO |
|
|
1393 |
|
|
|
1394 |
|
|
|
1395 |
The ''Changes'' file for exhaustive details on what |
|
|
1396 |
changed. |
|
|
1397 |
|
|
|
1398 |
|
|
|
1399 |
The ''INSTALL'' file for how to build |
|
|
1400 |
Perl. |
|
|
1401 |
|
|
|
1402 |
|
|
|
1403 |
The ''README'' file for general |
|
|
1404 |
stuff. |
|
|
1405 |
|
|
|
1406 |
|
|
|
1407 |
The ''Artistic'' and ''Copying'' files for copyright |
|
|
1408 |
information. |
|
|
1409 |
!!HISTORY |
|
|
1410 |
|
|
|
1411 |
|
|
|
1412 |
Written by Gurusamy Sarathy |
|
|
1413 |
gsar@activestate.com'' |
|
|
1414 |
'' |
|
|
1415 |
|
|
|
1416 |
|
|
|
1417 |
Send omissions or corrections to |
|
|
1418 |
perlbug@perl.com'''' |
|
|
1419 |
---- |