From: Jarkko Hietaniemi Date: Fri, 4 May 2001 14:03:58 +0000 (+0000) Subject: Introduce perl572delta, update Todo, add the missing X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=43d4bbc899d37eb18389db025e03eda26e08e8f7;p=p5sagit%2Fp5-mst-13.2.git Introduce perl572delta, update Todo, add the missing mention about signal safety since 5.7.1 (though this requires verification and more details.) p4raw-id: //depot/perl@9989 --- diff --git a/MANIFEST b/MANIFEST index 23ffde4..c1cc0a6 100644 --- a/MANIFEST +++ b/MANIFEST @@ -1290,6 +1290,7 @@ pod/perl5005delta.pod Changes from 5.004 to 5.005 pod/perl56delta.pod Changes from 5.005 to 5.6 pod/perl570delta.pod Changes from 5.6 to 5.7.0 pod/perl571delta.pod Changes from 5.7.0 to 5.7.1 +pod/perl572delta.pod Changes from 5.7.1 to 5.7.2 pod/perlapi.pod Perl API documentation (autogenerated) pod/perlapio.pod PerlIO IO API info pod/perlbook.pod Perl book information diff --git a/Todo b/Todo index eb13f65..d1d405d 100644 --- a/Todo +++ b/Todo @@ -4,7 +4,6 @@ before embarking on an implementation tour. Bugs remove recursion in regular expression engine fix memory leaks during compile failures - make signal handling safe Tie Modules VecArray Implement array using vec() @@ -81,7 +80,6 @@ Vague possibilities make tr/// return histogram in list context? loop control on do{} et al explicit switch statements - built-in globbing compile to real threaded code structured types autocroak? diff --git a/pod/perl571delta.pod b/pod/perl571delta.pod index 502387e..9a069be 100644 --- a/pod/perl571delta.pod +++ b/pod/perl571delta.pod @@ -8,7 +8,7 @@ This document describes differences between the 5.7.0 release and the 5.7.1 release. (To view the differences between the 5.6.0 release and the 5.7.0 -release, see L). +release, see L.) =head1 Security Vulnerability Closed @@ -62,13 +62,15 @@ natively, ASCII or EBCDIC, unless GLOB_ALPHASORT is specified.) =head1 Core Enhancements -=over 4 - -=item * +=head1 AUTOLOAD Is Now Lvaluable AUTOLOAD is now lvaluable, meaning that you can add the :lvalue attribute to AUTOLOAD subroutines and you can assign to the AUTOLOAD return value. +=head2 PerlIO is Now The Default + +=over 4 + =item * IO is now by default done via PerlIO rather than system's "stdio". @@ -192,6 +194,11 @@ C<\s> doesn't.) =back +=head2 Signals Are Now Safe + +Perl used to be fragile in that signals arriving at inopportune moments +could corrupt Perl's internal state. + =head1 Modules and Pragmata =head2 New Modules diff --git a/pod/perl572delta.pod b/pod/perl572delta.pod new file mode 100644 index 0000000..bce7328 --- /dev/null +++ b/pod/perl572delta.pod @@ -0,0 +1,202 @@ +=head1 NAME + +perl571delta - what's new for perl v5.7.2 + +=head1 DESCRIPTION + +This document describes differences between the 5.7.1 release and the +5.7.2 release. + +(To view the differences between the 5.6.0 release and the 5.7.0 +release, see L. To view the differences between the +5.7.0 release and the 5.7.1 release, see L.) + +=head1 Security Vulnerability Closed + +(This change was already made in 5.7.0 but bears repeating here.) + +A security vulnerability affecting all Perl versions prior to 5.6.1 +was found in August 2000. The vulnerability does not affect default +installations and as far as is known affects only the Linux platform. + +You should upgrade your Perl to 5.6.1 as soon as possible. Patches +for earlier releases exist but they require full recompilation from +the source code so 5.6.1 is your best choice. +See http://www.cpan.org/src/5.0/sperl-2000-08-05/sperl-2000-08-05.txt +for more information. + +=head1 Incompatible Changes + +=head1 Core Enhancements + +=head1 Modules and Pragmata + +=head2 New Modules + +=head2 Updated And Improved Modules and Pragmata + +=head1 Performance Enhancements + +=head1 Utility Changes + +=head1 New Documentation + +=head1 Installation and Configuration Improvements + +=head2 New Or Improved Platforms + +=head2 Generic Improvements + +=head1 Selected Bug Fixes + +=head2 Platform Specific Changes and Fixes + +=head1 New or Changed Diagnostics + +=head1 Changed Internals + +=head2 Regex pre-/post-compilation items matched up + +The regex compiler now maintains a structure that identifies nodes in +the compiled bytecode with the corresponding syntactic features of the +original regex expression. The information is attached to the new +C member of the C. See L for more +complete information. + +=head1 New Tests + +=head1 Known Problems + +Note that unlike other sections in this document (which describe +changes since 5.7.0) this section is cumulative containing known +problems for all the 5.7 releases. + +=head2 AIX vac 5.0.0.0 May Produce Buggy Code For Perl + +The AIX C compiler vac version 5.0.0.0 may produce buggy code, +resulting in few random tests failing, but when the failing tests +are run by hand, they succeed. We suggest upgrading to at least +vac version 5.0.1.0, that has been known to compile Perl correctly. +"lslpp -L|grep vac.C" will tell you the vac version. + +=head2 lib/ftmp-security tests warn 'system possibly insecure' + +Don't panic. Read INSTALL 'make test' section instead. + +=head2 lib/io_multihomed Fails In LP64-Configured HP-UX + +The lib/io_multihomed test may hang in HP-UX if Perl has been +configured to be 64-bit. Because other 64-bit platforms do not hang in +this test, HP-UX is suspect. All other tests pass in 64-bit HP-UX. The +test attempts to create and connect to "multihomed" sockets (sockets +which have multiple IP addresses). + +=head2 Test lib/posix Subtest 9 Fails In LP64-Configured HP-UX + +If perl is configured with -Duse64bitall, the successful result of the +subtest 10 of lib/posix may arrive before the successful result of the +subtest 9, which confuses the test harness so much that it thinks the +subtest 9 failed. + +=head2 lib/b test 19 + +The test fails on various platforms (PA64 and IA64 are known), but the +exact cause is still being investigated. + +=head2 Linux With Sfio Fails op/misc Test 48 + +No known fix. + +=head2 sigaction test 13 in VMS + +The test is known to fail; whether it's because of VMS of because +of faulty test is not known. + +=head2 sprintf tests 129 and 130 + +The op/sprintf tests 129 and 130 are known to fail on some platforms. +Examples include any platform using sfio, and Compaq/Tandem's NonStop-UX. +The failing platforms do not comply with the ANSI C Standard, line +19ff on page 134 of ANSI X3.159 1989 to be exact. (They produce +something else than "1" and "-1" when formatting 0.6 and -0.6 using +the printf format "%.0f", most often they produce "0" and "-0".) + +=head2 Failure of Thread tests + +The subtests 19 and 20 of lib/thr5005.t test are known to fail due to +fundamental problems in the 5.005 threading implementation. These are +not new failures--Perl 5.005_0x has the same bugs, but didn't have +these tests. (Note that support for 5.005-style threading remains +experimental.) + +=head2 Localising a Tied Variable Leaks Memory + + use Tie::Hash; + tie my %tie_hash => 'Tie::StdHash'; + + ... + + local($tie_hash{Foo}) = 1; # leaks + +Code like the above is known to leak memory every time the local() +is executed. + +=head2 Self-tying of Arrays and Hashes Is Forbidden + +Self-tying of arrays and hashes is broken in rather deep and +hard-to-fix ways. As a stop-gap measure to avoid people from getting +frustrated at the mysterious results (core dumps, most often) it is +for now forbidden (you will get a fatal error even from an attempt). + +=head2 Building Extensions Can Fail Because Of Largefiles + +Some extensions like mod_perl are known to have issues with +`largefiles', a change brought by Perl 5.6.0 in which file offsets +default to 64 bits wide, where supported. Modules may fail to compile +at all or compile and work incorrectly. Currently there is no good +solution for the problem, but Configure now provides appropriate +non-largefile ccflags, ldflags, libswanted, and libs in the %Config +hash (e.g., $Config{ccflags_nolargefiles}) so the extensions that are +having problems can try configuring themselves without the +largefileness. This is admittedly not a clean solution, and the +solution may not even work at all. One potential failure is whether +one can (or, if one can, whether it's a good idea) link together at +all binaries with different ideas about file offsets, all this is +platform-dependent. + +=head2 The Compiler Suite Is Still Experimental + +The compiler suite is slowly getting better but is nowhere near +working order yet. + +=head1 Reporting Bugs + +If you find what you think is a bug, you might check the articles +recently posted to the comp.lang.perl.misc newsgroup and the perl +bug database at http://bugs.perl.org. There may also be +information at http://www.perl.com/perl/, the Perl Home Page. + +If you believe you have an unreported bug, please run the B +program included with your release. Be sure to trim your bug down +to a tiny but sufficient test case. Your bug report, along with the +output of C, will be sent off to perlbug@perl.org to be +analysed by the Perl porting team. + +=head1 SEE ALSO + +The F file for exhaustive details on what changed. + +The F file for how to build Perl. + +The F file for general stuff. + +The F and F files for copyright information. + +=head1 HISTORY + +Written by Jarkko Hietaniemi >, with many contributions +from The Perl Porters and Perl Users submitting feedback and patches. + +Send omissions or corrections to >. + +=cut