=head1 Incompatible Changes
+=head2 Binary Incompatibility
+
+B<Perl 5.8 is not binary compatible with earlier releases of Perl.>
+
+B<You have to recompile your XS modules.>
+
+(Pure Perl modules should continue to work.)
+
+The major reason for the discontinuity is the new IO architecture
+called PerlIO. PerlIO is the default configuration because without
+it many new features of Perl 5.8 cannot be used. In other words:
+you just have to recompile your modules containing XS code, sorry
+about that.
+
+In future releases of Perl, non-PerlIO aware XS modules may become
+completely unsupported. This shouldn't be too difficult for module
+authors, however: PerlIO has been designed as a drop-in replacement
+(at the source code level) for the stdio interface.
+
+Depending on your platform, there are also other reasons why
+we decided to break binary compatibility, please read on.
+
=head2 64-bit platforms and malloc
If your pointers are 64 bits wide, the Perl malloc is no longer being
=item *
+The 5.005 threads model (module C<Thread>) is deprecated and expected
+to be removed in Perl 5.10. Multithreaded code should be migrated to
+the new ithreads model (see L<threads> and L<threads::shared>).
+
+=item *
+
The long deprecated uppercase aliases for the string comparison
operators (EQ, NE, LT, LE, GE, GT) have now been removed.
=item *
Earlier Perls treated "sub foo (@bar)" as equivalent to "sub foo (@)".
-The prototypes are now checked at compile-time for invalid characters.
-An optional warning is generated ("Illegal character in prototype...")
-but this may be upgraded to a fatal error in a future release.
+The prototypes are now checked better at compile-time for invalid
+syntax. An optional warning is generated ("Illegal character in
+prototype...") but this may be upgraded to a fatal error in a future
+release.
+
+=item *
+
+The existing behaviour when localising tied arrays and hashes is wrong,
+and will be changed in a future release, so do not rely on the existing
+behaviour. See L<"Localising Tied Arrays and Hashes Is Broken">.
=back
=back
+=head2 Restricted Hashes
+
+A restricted hash is restricted to a certain set of keys, no keys
+outside the set can be added. Also individual keys can be restricted
+so that the key cannot be deleted and the value cannot be changed.
+No new syntax is involved: the Hash::Util module is the interface.
+
=head2 Safe Signals
Perl used to be fragile in that signals arriving at inopportune moments
For developers interested in enhancing Perl's Unicode capabilities:
almost all the UCD files are included with the Perl distribution in
-the F<lib/unicore subdirectory>. The most notable omission, for space
+the F<lib/unicore> subdirectory. The most notable omission, for space
considerations, is the Unihan database.
=item *
=item *
+The $Config{byteorder} (and corresponding BYTEORDER in config.h) was
+previously wrong in platforms if sizeof(long) was 4, but sizeof(IV)
+was 8. The byteorder was only sizeof(long) bytes long (1234 or 4321),
+but now it is correctly sizeof(IV) bytes long, (12345678 or 87654321).
+(This problem didn't affect Windows platforms.)
+
+Also, $Config{byteorder} is now computed dynamically--this is more
+robust with "fat binaries" where an executable image contains binaries
+for more than one binary platform, and when cross-compiling.
+
+=item *
+
C<perl -d:Module=arg,arg,arg> now works (previously one couldn't pass
in multiple arguments.)
=item *
+POSIX::sleep() now returns the number of I<unslept> seconds
+(as the POSIX standard says), as opposed to CORE::sleep() which
+returns the number of slept seconds.
+
+=item *
+
The printf() and sprintf() now support parameter reordering using the
C<%\d+\$> and C<*\d+\$> syntaxes. For example
=item *
A new command-line option, C<-t> is available. It is the
-little brother of C<-T>: instead of dieing on taint violations,
+little brother of C<-T>: instead of dying on taint violations,
lexical warnings are given. B<This is only meant as a temporary
debugging aid while securing the code of old legacy applications.
This is not a substitute for -T.>
=item *
+Tied hash interfaces are now required to have the EXISTS and DELETE
+methods (either own or inherited).
+
+=item *
+
If tr/// is just counting characters, it doesn't attempt to
modify its target.
Use of the C</c> match modifier without an accompanying C</g> modifier
elicits a new warning: C<Use of /c modifier is meaningless without /g>.
+
Use of C</c> in substitutions, even with C</g>, elicits
-C<Use of /c modifier is meaningless in s///>.
+C<Use of /c modifier is meaningless in s///>.
+
+Use of C</g> with C<split> elicits C<Use of /g modifier is meaningless
+in split>.
=back
=item *
-C<Encode>, by Nick Ing-Simmons and Dan Kogai, provides a mechanism to
-translate between different character encodings. Support for Unicode,
-ISO-8859-1, and ASCII are compiled in to the module. Several other
-encodings (like the rest of the ISO-8859, CP*/Win*, Mac, KOI8-R, three
-variants EBCDIC, Chinese, Japanese, and Korean encodings) are included
-and can be loaded at runtime. (For space considerations, the largest
-Chinese encodings have been separated into their own CPAN module,
-Encode::HanExtra, which Encode will use if available). See L<Encode>.
+C<Encode>, orginally by Nick Ing-Simmons and now maintained by Dan
+Kogai, provides a mechanism to translate between different character
+encodings. Support for Unicode, ISO-8859-1, and ASCII are compiled in
+to the module. Several other encodings (like the rest of the
+ISO-8859, CP*/Win*, Mac, KOI8-R, three variants EBCDIC, Chinese,
+Japanese, and Korean encodings) are included and can be loaded at
+runtime. (For space considerations, the largest Chinese encodings
+have been separated into their own CPAN module, Encode::HanExtra,
+which Encode will use if available). See L<Encode>.
Any encoding supported by Encode module is also available to the
":encoding()" layer if PerlIO is used.
=item *
C<Hash::Util> is the interface to the new I<restricted hashes>
-feature. A restricted hash is restricted to a certain set of keys,
-no keys outside the set can be added. Also individual keys can be
-restricted so that the key cannot be deleted and the value cannot be
-changed. (Implemented by Jeffrey Friedl, Nick Ing-Simmons, and
+feature. (Implemented by Jeffrey Friedl, Nick Ing-Simmons, and
Michael Schwern.)
=item *
L<libnet> is a collection of perl5 modules related to network
programming, from Graham Barr. See L<Net::FTP>, L<Net::NNTP>,
-L<Net::Ping>, L<Net::POP3>, L<Net::SMTP>, and L<Net::Time>.
+L<Net::Ping> (not part of libnet, but related), L<Net::POP3>,
+L<Net::SMTP>, and L<Net::Time>.
Perl installation leaves libnet unconfigured, use F<libnetcfg> to configure.
=item *
-C<Locale::Constants>, C<Locale::Country>, C<Locale::Currency>, and
-C<Locale::Language>, from Neil Bowers, have been added. They provide the
-codes for various locale standards, such as "fr" for France, "usd" for
-US Dollar, and "jp" for Japanese.
+C<Locale::Constants>, C<Locale::Country>, C<Locale::Currency>
+C<Locale::Language>, and L<Locale::Script>, from Neil Bowers, have
+been added. They provide the codes for various locale standards, such
+as "fr" for France, "usd" for US Dollar, and "ja" for Japanese.
use Locale::Country;
=item *
-Math::BigRat for big rational numbers, to accompany Math::BigInt and
+C<Math::BigRat> for big rational numbers, to accompany Math::BigInt and
Math::BigFloat, from Tels.
=item *
C<Storable> gives persistence to Perl data structures by allowing the
storage and retrieval of Perl data to and from files in a fast and
-compact binary format, from Raphael Manfredi. See L<Storable>.
+compact binary format. Because in effect Storable does serialisation
+of Perl data structues, with it you can also clone deep, hierarchical
+datastructures. Storable was originally created by Raphael Manfredi,
+but it is now maintained by Abhijit Menon-Sen. Storable has been
+enhanced to understand the two new hash features, Unicode keys and
+restricted hashes. See L<Storable>.
=item *
=item *
+The return value of Cwd::fastcwd() is now tainted.
+
+=item *
+
Data::Dumper has now an option to sort hashes.
=item *
=item *
+Devel::Peek now has an interface for the Perl memory statistics
+(this works only if you are using perl's malloc, and if you have
+compiled with debugging).
+
+=item *
+
The English module can now be used without the infamous performance
hit by saying
=item *
+ExtUtils::MakeMaker now uses File::Spec internally, which hopefully
+leads into better portability.
+
+=item *
+
Fcntl, Socket, and Sys::Syslog have been rewritten to use the
new-style constant dispatch section (see L<ExtUtils::Constant>).
This means that they will be more robust and hopefully faster.
=item *
-Devel::Peek now has an interface for the Perl memory statistics
-(this works only if you are using perl's malloc, and if you have
-compiled with debugging).
-
-=item *
-
IPC::Open3 now allows the use of numeric file descriptors.
=item *
=item *
-ExtUtils::MakeMaker now uses File::Spec internally, which hopefully
-leads into better portability.
-
-=item *
-
Math::BigFloat and Math::BigInt have undergone a full rewrite.
They are now magnitudes faster, and they support various
bignum libraries such as GMP and PARI as their backends.
=item *
-Net::Ping has been muchly enhanced. Multihoming is now supported.
-There is now "external" protocol which uses Net::Ping::External module
-which runs external ping(1) and parses the output. A version of
-Net::Ping::External is available in CPAN.
+Net::Ping has been muchly enhanced: multihoming is now supported,
+Win32 functionality is better, there is now time measuring
+functionality (optionally high-resolution using Time::HiRes),
+and there is now "external" protocol which uses Net::Ping::External
+module which runs your external ping utility and parses the output.
+A version of Net::Ping::External is available in CPAN.
+
+Note that some of the Net::Ping tests are disabled when running
+under the Perl distribution since one cannot assume one or more
+of the following: enabled echo port at localhost, full Internet
+connectivity, or sympathetic firewalls. You can set the environment
+variable PERL_TEST_Net_Ping to "1" (one) before running the Perl test
+suite to enable all the Net::Ping tests.
=item *
=item *
+C<enc2xs> is a tool for people adding their own encodings to the
+Encode module.
+
+=item *
+
C<h2ph> now supports C trigraphs.
=item *
C<perlcc> has been rewritten and its user interface (that is,
command line) is much more like that of the UNIX C compiler, cc.
(The perlbc tools has been removed. Use C<perlcc -B> instead.)
+B<Note that perlcc is still considered very experimental and
+unsupported.>
=item *
=item *
+C<piconv> is an implementation of the character conversion utility
+C<iconv>, demonstrating the new Encode module.
+
+=item *
+
C<pod2html> now allows specifying a cache directory.
=item *
+C<pod2html> now produces XHTML 1.0.
+
+=item *
+
+C<pod2html> now understands POD written using different line endings
+(PC-like CRLF versus UNIX-like LF versus MacClassic-like CR).
+
+=item *
+
C<s2p> has been completely rewritten in Perl. (It is in fact a full
implementation of sed in Perl: you can use the sed functionality by
using the C<psed> utility.)
=item *
-If binary compatibility with the 5.005 release is not wanted, Configure
-no longer suggests including the 5.005 modules in @INC.
+Since Perl 5.8 is not binary-compatible with previous releases
+of Perl, Configure no longer suggests including the 5.005
+modules in @INC.
=item *
=item *
-$Config{byteorder} is now computed dynamically (this is more robust
-with "fat binaries" where an executable image contains binaries for
-more than one binary platform.)
-
-=item *
-
Because PerlIO is now the default on most platforms, "-perlio" doesn't
get appended to the $Config{archname} (also known as $^O) anymore.
Instead, if you explicitly choose not to use perlio (Configure command
rules for the conversion. Some platforms that used to use gcvt may
now resort to the slower sprintf.
+=item *
+
+The obsolete method of making a special (e.g., debugging) flavor
+of perl by saying
+
+ make LIBPERL=libperld.a
+
+has been removed. Use -DDEBUGGING instead.
+
=back
=head2 New Or Improved Platforms
=item *
-After a long pause, AmigaOS has been verified to be happy with Perl.
-
-=item *
-
AtheOS ( http://www.atheos.cx/ ) is a new platform.
=item *
=item *
+Stratus VOS is now supported using Perl's native build method
+(Configure). This is the recommended method to build Perl on
+VOS. The older methods, which build miniperl, are still
+available. See L<perlvos>.
+
+=item *
+
Amdahl UTS UNIX mainframe platform is now supported.
=item *
=item *
caller() could cause core dumps in certain situations. Carp was sometimes
-affected by this problem.
+affected by this problem. In particular, caller() now returns a
+subroutine name of C<(unknown)> for subroutines that have been removed
+from the symbol table.
=item *
=item *
C<*foo{FORMAT}> now works.
+
=item *
Infinity is now recognized as a number.
=item *
+Localised tied variables no more leak memory
+
+ use Tie::Hash;
+ tie my %tied_hash => 'Tie::StdHash';
+
+ ...
+
+ # Used to leak memory every time local() was called,
+ # in a loop this added up.
+ local($tied_hash{Foo}) = 1;
+
+=item *
+
+Localised hash elements (and %ENV) are correctly unlocalised to not to
+exist, if that's what they were.
+
+
+ use Tie::Hash;
+ tie my %tied_hash => 'Tie::StdHash';
+
+ ...
+
+ # Nothing has set the FOO element so far
+
+ { local $tied_hash{FOO} = 'Bar' }
+
+ # This used to print, but not now.
+ print "exists!\n" if exists $tied_hash{FOO};
+
+As a side effect of this fix, tied hash interfaces B<must> define
+the EXISTS and DELETE methods.
+
+=item *
+
mkdir() now ignores trailing slashes in the directory name,
as mandated by POSIX.
=item *
-The character tables have been updated to Unicode 3.1.1.
+The character tables have been updated to Unicode 3.2.0.
=item *
HP-UX
-README.hpux updated; C<Configure -Duse64bitall> now works.
+README.hpux updated; C<Configure -Duse64bitall> now works;
+now uses HP-UX malloc instead of Perl malloc.
=item *
=item *
+NetBSD/threads: try installing the GNU pth (should be in the
+packages collection, or http://www.gnu.org/software/pth/),
+and Configure with -Duseithreads.
+
+=item *
+
NetBSD/sparc
Perl now works on NetBSD/sparc.
=item *
+Stratus VOS
+
+The native build method requires at least VOS Release 14.5.0
+and GNU C++/GNU Tools 2.0.1 or later. The Perl pack function
+now maps overflowed values to +infinity and underflowed values
+to -infinity.
+
+=item *
+
Tru64 (aka Digital UNIX, aka DEC OSF/1)
The operating system version letter now recorded in $Config{osvers}.
The C<waitpid> emulation has been improved. The worst bug (now fixed)
was that a pid of -1 would cause a wildcard search of all processes on
-the system. The most significant enhancement is that we can now
-usually get the completion status of a terminated process.
+the system.
POSIX-style signals are now emulated much better on VMS versions prior
to 7.0.
user's default privileges, which could sometimes result in a mismatch
between reported access and actual access.
+There is a new C<kill> implementation based on C<sys$sigprc> that allows
+older VMS systems (pre-7.0) to use C<kill> to send signals rather than
+simply force exit. This implementation also allows later systems to
+call C<kill> from within a signal handler.
+
+Iterative logical name translations are now limited to 10 iterations in
+imitation of SHOW LOGICAL and other OpenVMS facilities.
+
=item *
Windows
=item *
-C<File::Spec->tmpdir()> now prefers C:/temp over /tmp
+C<< File::Spec->tmpdir() >> now prefers C:/temp over /tmp
(works better when perl is running as service).
=item *
=item *
+Win64 compilation is now supported.
+
+=item *
+
winsock handle leak fixed.
=item *
=head1 New Tests
-Several new tests have been added, especially for the F<lib>
-subsection. There are now about 56 000 individual tests (spread over
-about 620 test scripts), in the regression suite (5.6.1 has about
-11700 tests, in 258 test scripts) Many of the new tests are introduced
-by the new modules, but still in general Perl is now more thoroughly
-tested.
+Several new tests have been added, especially for the F<lib> and F<ext>
+subsections. There are now about 65 000 individual tests (spread over
+about 700 test scripts), in the regression suite (5.6.1 has about
+11700 tests, in 258 test scripts) Many of the new tests are of course
+introduced by the new modules, but still in general Perl is now more
+thoroughly tested.
Because of the large number of tests, running the regression suite
will take considerably longer time than it used to: expect the suite
=back
-=head2 Amiga Perl Invoking Mystery
+=head2 BeOS
+
+The following tests fail on 5.8.0 Perl in BeOS Personal 5.03:
+
+ t/op/lfs............................FAILED at test 17
+ t/op/magic..........................FAILED at test 24
+ ext/Fcntl/t/syslfs..................FAILED at test 17
+ ext/File/Glob/t/basic...............FAILED at test 3
+ ext/POSIX/t/sigaction...............FAILED at test 13
+ ext/POSIX/t/waitpid.................FAILED at test 1
+ lib/Tie/File/t/16_handle............FAILED at test 39
+
+See L<perlbeos> (README.beos) for more details.
+
+=head2 ext/threads/t/libc
-One cannot call Perl using the C<volume:> syntax, that is, C<perl -v>
-works, but for example C<bin:perl -v> doesn't. The exact reason isn't
-known but the current suspect is the F<ixemul> library.
+If this test fails, it indicates that your libc (C library) is not
+threadsafe. This particular test stress tests the localtime() call to
+find out whether it is threadsafe. See L<perlthrtut> for more information.
=head2 FreeBSD Failing locale Test 117 For ISO8859-15 Locales
(Y with diaeresis) not behaving correctly when being matched
case-insensitively.
+=head2 Modifying $_ Inside for(..)
+
+ for (1..5) { $_++ }
+
+works without complaint. It shouldn't. (You should be able to
+modify only lvalue elements inside the loops.) You can see the
+correct behaviour by replacing the 1..5 with 1, 2, 3, 4, 5.
+
=head2 mod_perl 1.26 Doesn't Build With Threaded Perl
Use mod_perl 1.27 or higher.
Don't panic. Read INSTALL 'make test' section instead.
-=head2 HP-UX lib/posix Subtest 9 Fails When LP64-Configured
+=head2 HP-UX lib/posix Subtest 9 Fails When LP64-Configured
If perl is configured with -Duse64bitall, the successful result of the
subtest 10 of lib/posix may arrive before the successful result of the
-------------------------------------------------------------------------
../ext/DB_File/t/db-btree.t 0 11 ?? ?? % ??
../ext/DB_File/t/db-recno.t 149 3 2.01% 61 63 65
- ../ext/POSIX/t/posix.t 31 1 3.23% 10
If you are building on a UFS partition, you will also probably see
t/op/stat.t subtest #9 fail. This is caused by Darwin's UFS not
supporting inode change time.
+Also the ext/POSIX/t/posix.t subtest #10 fails but it is skipped for
+now because the failure is Apple's fault, not Perl's (blocked signals
+are lost).
+
+If you Configure with ithreads, ext/threads/t/libc.t will fail, again
+not Perl's fault-- the libc of Mac OS X is not threadsafe (in this
+particular test the localtime() call is found to be threadunsafe.)
+
=head2 op/sprintf tests 91, 129, and 130
The op/sprintf tests 91, 129, and 130 are known to fail on some platforms.
formatting 0.6 and -0.6 using the printf format "%.0f", most often
they produce "0" and "-0".)
+=head2 Solaris 2.5
+
+In case you are still using Solaris 2.5 (aka SunOS 5.5), you may
+experience failures (the test core dumping) in lib/locale.t.
+The suggested cure is to upgrade your Solaris.
+
+=head2 Stratus VOS
+
+When Perl is built using the native build process on VOS Release
+14.5.0 and GNU C++/GNU Tools 2.0.1, all attempted tests either
+pass or result in TODO (ignored) failures.
+
+=head2 Term::ReadKey not working on Win32
+
+Use Term::ReadKey 2.20 or later.
+
=head2 Failure of Thread (5.005-style) tests
-B<Note that support for 5.005-style threading remains experimental
-and practically unsupported.>
+B<Note that support for 5.005-style threading is deprecated,
+experimental and practically unsupported. In 5.10 it is expected
+to be removed.>
The following tests are known to fail due to fundamental problems in
the 5.005 threading implementation. These are not new failures--Perl
../lib/autouse.t 10 1 10.00% 4
op/flip.t 15 1 6.67% 15
-These failures are unlikely to get fixed as the 5.005-style
-threads are considered fundamentally broken.
+These failures are unlikely to get fixed as the 5.005-style threads
+are considered fundamentally broken. (Basically what happens is that
+competing threads can corrupt shared global state.)
=head2 UNICOS
- Failed Test Stat Wstat Total Fail Failed List of Failed
- -------------------------------------------------------------------------
- ../ext/Socket/socketpair.t 1 256 45 1 2.22% 12
- ../lib/Math/Trig.t 26 1 3.85% 25
- ../lib/warnings.t 460 1 0.22% 425
- io/fs.t 36 1 2.78% 31
- op/numconvert.t 1440 13 0.90% 208 509-510
- 657-658 665-666 829-830 989-990 1149-1150
-
-=head2 UNICOS and UNICOS/mk
+ ../lib/Math/Trig.t 26 1 3.85% 25
+ ../lib/warnings.t 470 1 0.21% 429
-The io/fs test #31 is failing because in UNICOS and UNICOS/mk the Perl
-truncate() cannot be used to grow the size of filehandles, only to
-reduce the size. The workaround is to truncate files instead of
-filehandles.
+The Trig.t failure is caused by the slighly differing (from IEEE)
+floating point implementation of UNICOS. The warnings.t failure is
+also related: the test assumes a certain floating point output format,
+this assumption fails in UNICOS.
=head2 UNICOS/mk
=head2 Win32
In multi-CPU boxes there are some problems with the I/O buffering:
-some output may appear twice. The following Win32 failures are known
-as of 5.7.3:
+some output may appear twice.
- Failed Test Stat Wstat Total Fail Failed List of Failed
- -------------------------------------------------------------------------
- ..\ext/threads/t/end.t 6 4 66.67% 3-6
+=head2 XML::Parser not working
-=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.
+Use XML::Parser 2.31 or later.
=head2 z/OS (OS/390)
better than it was in 5.6.0, it's just that so many new modules and
tests have been added.
- Failed Test Stat Wstat Total Fail Failed List of Failed
- -------------------------------------------------------------------------
- ../ext/Data/Dumper/t/dumper.t 321 2 0.62% 311 314
+ Failed Test Stat Wstat Total Fail Failed List of Failed
+ ---------------------------------------------------------------------------
+ ../ext/Data/Dumper/t/dumper.t 357 8 2.24% 311 314 325 327
+ 331 333 337 339
../ext/IO/lib/IO/t/io_unix.t 5 4 80.00% 2-5
- ../lib/utf8.t 94 13 13.83% 27 30-31 43 46 73
- 76 79 82 85 88 91
- 94
- ../lib/Benchmark.t 1 256 159 1 0.63% 75
- ../lib/ExtUtils/t/Constant.t 27 19 70.37% 5-23
+ ../ext/Storable/t/downgrade.t 12 3072 169 12 7.10% 14-15 46-47 78-79
+ 110-111 150 161
+ ../lib/ExtUtils/t/Constant.t 121 30976 48 48 100.00% 1-48
../lib/ExtUtils/t/Embed.t 9 9 100.00% 1-9
- op/pat.t 864 9 1.04% 242-243 665 776
- 785 832-834 845
+ op/pat.t 910 7 0.77% 665 776 785 832-
+ 834 845
op/sprintf.t 224 3 1.34% 98 100 136
op/tr.t 97 5 5.15% 63 71-74
- uni/fold.t 767 8 1.04% 25-26 62 169 196
- 648 697-698
- 60 tests and 384 subtests skipped.
+ uni/fold.t 780 6 0.77% 61 169 196 661
+ 710-711
+
+The dumper.t and downgrade.t are problems in the tests, the io_unix
+and sprintf are problems in the USS (UDP sockets and printf formats).
+The pat, tr, and fold are genuine Perl problems caused by EBCDIC (and
+in the pat and fold cases, combining that with Unicode). The Constant
+and Embed are probably problems in the tests (since they test Perl's
+ability to build extensions, and that seems to be working reasonably well.)
=head2 Localising Tied Arrays and Hashes Is Broken
local %tied_array;
-doesn't work as one would expect: the old value is restored
-incorrectly.
+doesn't work as one would expect: the old value is restored incorrectly.
+This will be fixed in a future release, but note that doing so will break
+existing code that relies on the broken semantics. It is important
+that you check and alter any such code now. In the future release,
+localising a tied array or hash will convert that variable into a new,
+empty, and B<untied> array or hash. At the end of the block, the variable
+will be repointed at the original tied thingy. Note that no tied methods
+will be called at any point during this process. (With the existing
+behaviour, the variable remains tied while localised.)
=head2 Self-tying of Arrays and Hashes Is Forbidden
Though mostly working, Unicode support still has problem spots on
EBCDIC platforms. One such known spot are the C<\p{}> and C<\P{}>
regular expression constructs for code points less than 256: the
-pP are testing for Unicode code points, not knowing about EBCDIC.
+C<pP> are testing for Unicode code points, not knowing about EBCDIC.
-=head2 The Compiler Suite Is Still Experimental
+=head2 The Compiler Suite Is Still Very Experimental
The compiler suite is slowly getting better but it continues to be
highly experimental. Use in production environments is discouraged.
core module. It is still a useful module, though, and is available
from the CPAN.
+Perl 5.8 unfortunately does not build anymore on AmigaOS,
+this broke at some point accidentally. Since there are not that many
+Amiga developers available, we could not get this fixed and tested in
+time for 5.8.0.
+
=head1 Reporting Bugs
If you find what you think is a bug, you might check the articles
projects / p5sagit/p5-mst-13.2.git / blobdiff