a2p
accept
access
acct
addftinfo
addr2line
adjtime
afmtodit
after
aio_cancel
aio_error
aio_read
aio_return
aio_suspend
aio_waitcomplete
aio_write
alias
aliases
alloc
anvil
append
apply
apropos
ar
array
as
asa
asn1parse
at
atq
atrm
attemptckalloc
attemptckrealloc
authlib
authtest
autopoint
awk
b64decode
b64encode
basename
batch
bc
bdes
bell
bg
bgerror
biff
big5
binary
bind
bindkey
bindtags
bindtextdomain
bio
bitmap
blowfish
bn
bootparams
bootptab
bounce
brandelf
break
breaksw
brk
bsdiff
bsdtar
bsnmpd
bspatch
bthost
btsockstat
buffer
builtin
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button
byacc
bzcat
bzegrep
bzfgrep
bzgrep
bzip2
c2ph
c89
c99
ca
cal
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canvas
cap_mkdb
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cat
catch
catman
cc
cd
cdcontrol
chdir
checkbutton
checknr
chflags
chfn
chgrp
chio
chkey
chmod
chown
chpass
chroot
chsh
ci
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ckalloc
ckdist
ckfree
ckrealloc
cksum
cleanup
clear
clipboard
clock
clock_getres
clock_gettime
clock_settime
close
cmp
co
col
colcrt
colldef
colors
colrm
column
comm
command
compile_et
complete
compress
concat
config
connect
console
continue
core
courierlogger
couriertcpd
cp
cpan
cpio
cpp
creat
crl
crontab
crunchgen
crunchide
crypt
crypto
csh
csplit
ctags
ctm
ctm_dequeue
ctm_rmail
ctm_smail
cu
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cursors
cut
cvs
date
dbiprof
dbiproxy
dc
dcgettext
dcngettext
dd
dde
default
defer
deliverquota
des
destroy
devfs
df
dgettext
dgst
dh
dhparam
dialog
diff
diff3
dig
dir
dirent
dirname
dirs
discard
disktab
dngettext
do
domainname
done
dprofpp
dsa
dsaparam
dtmfdecode
du
dup
dup2
eaccess
ec
ecdsa
echo
echotc
ecparam
ed
edit
editrc
ee
egrep
elf
elfdump
elif
else
enc
enc2xs
encoding
end
endif
endsw
engine
enigma
entry
env
envsubst
eof
eqn
err
errno
error
errstr
esac
ethers
euc
eui64
eval
event
evp
ex
exec
execve
exit
expand
export
exports
expr
extattr
extattr_delete_fd
extattr_delete_file
extattr_get_fd
extattr_get_file
extattr_set_fd
extattr_set_file
f77
false
famm
famx
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fc
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fconfigure
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fdwrite
fetch
fg
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fhstatfs
fi
file
file2c
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filename
filetest
find
find2perl
finger
flex
flock
flush
fmt
focus
fold
font
fontedit
for
foreach
fork
format
forward
fpathconf
frame
from
fs
fstab
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fstatfs
fsync
ftp
ftpchroot
ftpusers
ftruncate
futimes
g711conv
gb2312
gb18030
gbk
gcc
gcore
gcov
gdb
gencat
gendsa
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gensnmptree
getconf
getdents
getdirentries
getdtablesize
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geteuid
getfacl
getfh
getfsstat
getgid
getgroups
getitimer
getlogin
getopt
getopts
getpeername
getpgid
getpgrp
getpid
getppid
getpriority
getresgid
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getrlimit
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gets
getsid
getsockname
getsockopt
gettext
gettextize
gettimeofday
gettytab
getuid
glob
global
gmake
goto
gperf
gprof
grab
grep
grid
grn
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groff
groff_font
groff_out
groff_tmac
grog
grolbp
grolj4
grops
grotty
group
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gunzip
gzcat
gzexe
gzip
h2ph
h2xs
hash
hashstat
hd
head
help2man
hesinfo
hexdump
history
host
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hosts
hosts_access
hosts_options
hpftodit
http
hup
i386_get_ioperm
i386_get_ldt
i386_set_ioperm
i386_set_ldt
i386_vm86
iconv
id
ident
idprio
if
ifnames253
ifnames259
image
imapd
incr
indent
indxbib
info
infokey
inode
install
instmodsh
interp
intro
introduction
ioctl
ipcrm
ipcs
ipf
ipftest
ipnat
ippool
ipresend
issetugid
jail
jail_attach
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join
jot
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lex
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list
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ln
load
loadfont
local
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locate
lock
lockf
log
logger
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look
lookbib
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lower
lp
lpq
lpr
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lynx
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mt
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nex
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nice
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nm
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notify
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objcopy
objdump
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ocsp
od
onintr
open
openssl
opieaccess
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option
options
oqmgr
pack
package
packagens
pagesize
palette
pam_auth
panedwindow
parray
passwd
paste
patch
pathchk
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pawd
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FreeBSD/Linux/UNIX General Commands Manual
Hypertext Man Pages
perl588delta
 
PERL588DELTA(1)        Perl Programmers Reference Guide        PERL588DELTA(1)



NAME
       perldelta - what is new for perl v5.8.8

DESCRIPTION
       This document describes differences between the 5.8.7 release and the
       5.8.8 release.

Incompatible Changes
       There are no changes intentionally incompatible with 5.8.7. If any
       exist, they are bugs and reports are welcome.

Core Enhancements
       o   "chdir", "chmod" and "chown" can now work on filehandles as well as
	   filenames, if the system supports respectively "fchdir", "fchmod"
	   and "fchown", thanks to a patch provided by Gisle Aas.

Modules and Pragmata
       o   "Attribute::Handlers" upgraded to version 0.78_02

	   o   Documentation typo fix

       o   "attrs" upgraded to version 1.02

	   o   Internal cleanup only

       o   "autouse" upgraded to version 1.05

	   o   Simplified implementation

       o   "B" upgraded to version 1.09_01

	   o   The inheritance hierarchy of the "B::" modules has been cor-
	       rected; "B::NV" now inherits from "B::SV" (instead of "B::IV").

       o   "blib" upgraded to version 1.03

	   o   Documentation typo fix

       o   "ByteLoader" upgraded to version 0.06

	   o   Internal cleanup

       o   "CGI" upgraded to version 3.15

	   o   Extraneous "?" from "self_url()" removed

	   o   "scrolling_list()" select attribute fixed

	   o   "virtual_port" now works properly with the https protocol

	   o   "upload_hook()" and "append()" now works in function-oriented
	       mode

	   o   "POST_MAX" doesn't cause the client to hang any more

	   o   Automatic tab indexes are now disabled and new "-tabindex"
	       pragma has been added to turn automatic indexes back on

	   o   "end_form()" doesn't emit empty (and non-validating) "
" o "CGI::Carp" works better in certain mod_perl configurations o Setting $CGI::TMPDIRECTORY is now effective o Enhanced documentation o "charnames" upgraded to version 1.05 o "viacode()" now accept hex strings and has been optimized. o "CPAN" upgraded to version 1.76_02 o 1 minor bug fix for Win32 o "Cwd" upgraded to version 3.12 o "canonpath()" on Win32 now collapses foo\.. sections correctly. o Improved behaviour on Symbian OS. o Enhanced documentation and typo fixes o Internal cleanup o "Data::Dumper" upgraded to version 2.121_08 o A problem where "Data::Dumper" would sometimes update the iter- ator state of hashes has been fixed o Numeric labels now work o Internal cleanup o "DB" upgraded to version 1.01 o A problem where the state of the regexp engine would sometimes get clobbered when running under the debugger has been fixed. o "DB_File" upgraded to version 1.814 o Adds support for Berkeley DB 4.4. o "Devel::DProf" upgraded to version 20050603.00 o Internal cleanup o "Devel::Peek" upgraded to version 1.03 o Internal cleanup o "Devel::PPPort" upgraded to version 3.06_01 o "--compat-version" argument checking has been improved o Files passed on the command line are filtered by default o "--nofilter" option to override the filtering has been added o Enhanced documentation o "diagnostics" upgraded to version 1.15 o Documentation typo fix o "Digest" upgraded to version 1.14 o The constructor now knows which module implements SHA-224 o Documentation tweaks and typo fixes o "Digest::MD5" upgraded to version 2.36 o "XSLoader" is now used for faster loading o Enhanced documentation including MD5 weaknesses discovered lately o "Dumpvalue" upgraded to version 1.12 o Documentation fix o "DynaLoader" upgraded but unfortunately we're not able to increment its version number :-( o Implements "dl_unload_file" on Win32 o Internal cleanup o "XSLoader" 0.06 incorporated; small optimisation for calling "bootstrap_inherit()" and documentation enhancements. o "Encode" upgraded to version 2.12 o A coderef is now acceptable for "CHECK"! o 3 new characters added to the ISO-8859-7 encoding o New encoding "MIME-Header-ISO_2022_JP" added o Problem with partial characters and "encoding(utf-8-strict)" fixed. o Documentation enhancements and typo fixes o "English" upgraded to version 1.02 o the $COMPILING variable has been added o "ExtUtils::Constant" upgraded to version 0.17 o Improved compatibility with older versions of perl o "ExtUtils::MakeMaker" upgraded to version 6.30 (was 6.17) o Too much to list here; see o "File::Basename" upgraded to version 2.74, with changes contributed by Michael Schwern. o Documentation clarified and errors corrected. o "basename" now strips trailing path separators before process- ing the name. o "basename" now returns "/" for parameter "/", to make "base- name" consistent with the shell utility of the same name. o The suffix is no longer stripped if it is identical to the remaining characters in the name, again for consistency with the shell utility. o Some internal code cleanup. o "File::Copy" upgraded to version 2.09 o Copying a file onto itself used to fail. o Moving a file between file systems now preserves the access and modification time stamps o "File::Find" upgraded to version 1.10 o Win32 portability fixes o Enhanced documentation o "File::Glob" upgraded to version 1.05 o Internal cleanup o "File::Path" upgraded to version 1.08 o "mkpath" now preserves "errno" when "mkdir" fails o "File::Spec" upgraded to version 3.12 o "File::Spec-"rootdir()> now returns "\" on Win32, instead of "/" o $^O could sometimes become tainted. This has been fixed. o "canonpath" on Win32 now collapses "foo/.." (or "foo\..") sec- tions correctly, rather than doing the "misguided" work it was previously doing. Note that "canonpath" on Unix still does not collapse these sections, as doing so would be incorrect. o Some documentation improvements o Some internal code cleanup o "FileCache" upgraded to version 1.06 o POD formatting errors in the documentation fixed o "Filter::Simple" upgraded to version 0.82 o "FindBin" upgraded to version 1.47 o Now works better with directories where access rights are more restrictive than usual. o "GDBM_File" upgraded to version 1.08 o Internal cleanup o "Getopt::Long" upgraded to version 2.35 o "prefix_pattern" has now been complemented by a new configura- tion option "long_prefix_pattern" that allows the user to spec- ify what prefix patterns should have long option style seman- tics applied. o Options can now take multiple values at once (experimental) o Various bug fixes o "if" upgraded to version 0.05 o Give more meaningful error messages from "if" when invoked with a condition in list context. o Restore backwards compatibility with earlier versions of perl o "IO" upgraded to version 1.22 o Enhanced documentation o Internal cleanup o "IPC::Open2" upgraded to version 1.02 o Enhanced documentation o "IPC::Open3" upgraded to version 1.02 o Enhanced documentation o "List::Util" upgraded to version 1.18 (was 1.14) o Fix pure-perl version of "refaddr" to avoid blessing an un- blessed reference o Use "XSLoader" for faster loading o Fixed various memory leaks o Internal cleanup and portability fixes o "Math::Complex" upgraded to version 1.35 o "atan2(0, i)" now works, as do all the (computable) complex argument cases o Fixes for certain bugs in "make" and "emake" o Support returning the kth root directly o Support "[2,-3pi/8]" in "emake" o Support "inf" for "make"/"emake" o Document "make"/"emake" more visibly o "Math::Trig" upgraded to version 1.03 o Add more great circle routines: "great_circle_waypoint" and "great_circle_destination" o "MIME::Base64" upgraded to version 3.07 o Use "XSLoader" for faster loading o Enhanced documentation o Internal cleanup o "NDBM_File" upgraded to version 1.06 o Enhanced documentation o "ODBM_File" upgraded to version 1.06 o Documentation typo fixed o Internal cleanup o "Opcode" upgraded to version 1.06 o Enhanced documentation o Internal cleanup o "open" upgraded to version 1.05 o Enhanced documentation o "overload" upgraded to version 1.04 o Enhanced documentation o "PerlIO" upgraded to version 1.04 o "PerlIO::via" iterate over layers properly now o "PerlIO::scalar" understands "$/ = """ now o "encoding(utf-8-strict)" with partial characters now works o Enhanced documentation o Internal cleanup o "Pod::Functions" upgraded to version 1.03 o Documentation typos fixed o "Pod::Html" upgraded to version 1.0504 o HTML output will now correctly link to "=item"s on the same page, and should be valid XHTML. o Variable names are recognized as intended o Documentation typos fixed o "Pod::Parser" upgraded to version 1.32 o Allow files that start with "=head" on the first line o Win32 portability fix o Exit status of "pod2usage" fixed o New "-noperldoc" switch for "pod2usage" o Arbitrary URL schemes now allowed o Documentation typos fixed o "POSIX" upgraded to version 1.09 o Documentation typos fixed o Internal cleanup o "re" upgraded to version 0.05 o Documentation typo fixed o "Safe" upgraded to version 2.12 o Minor documentation enhancement o "SDBM_File" upgraded to version 1.05 o Documentation typo fixed o Internal cleanup o "Socket" upgraded to version 1.78 o Internal cleanup o "Storable" upgraded to version 2.15 o This includes the "STORABLE_attach" hook functionality added by Adam Kennedy, and more frugal memory requirements when storing under "ithreads", by using the "ithreads" cloning tracking code. o "Switch" upgraded to version 2.10_01 o Documentation typos fixed o "Sys::Syslog" upgraded to version 0.13 o Now provides numeric macros and meaningful "Exporter" tags. o No longer uses "Sys::Hostname" as it may provide useless values in unconfigured network environments, so instead uses "INADDR_LOOPBACK" directly. o "syslog()" now uses local timestamp. o "setlogmask()" now behaves like its C counterpart. o "setlogsock()" will now "croak()" as documented. o Improved error and warnings messages. o Improved documentation. o "Term::ANSIColor" upgraded to version 1.10 o Fixes a bug in "colored" when $EACHLINE is set that caused it to not color lines consisting solely of 0 (literal zero). o Improved tests. o "Term::ReadLine" upgraded to version 1.02 o Documentation tweaks o "Test::Harness" upgraded to version 2.56 (was 2.48) o The "Test::Harness" timer is now off by default. o Now shows elapsed time in milliseconds. o Various bug fixes o "Test::Simple" upgraded to version 0.62 (was 0.54) o "is_deeply()" no longer fails to work for many cases o Various minor bug fixes o Documentation enhancements o "Text::Tabs" upgraded to version 2005.0824 o Provides a faster implementation of "expand" o "Text::Wrap" upgraded to version 2005.082401 o Adds $Text::Wrap::separator2, which allows you to preserve existing newlines but add line-breaks with some other string. o "threads" upgraded to version 1.07 o "threads" will now honour "no warnings 'threads'" o A thread's interpreter is now freed after "$t->join()" rather than after "undef $t", which should fix some "ithreads" memory leaks. (Fixed by Dave Mitchell) o Some documentation typo fixes. o "threads::shared" upgraded to version 0.94 o Documentation changes only o Note: An improved implementation of "threads::shared" is avail- able on CPAN - this will be merged into 5.8.9 if it proves sta- ble. o "Tie::Hash" upgraded to version 1.02 o Documentation typo fixed o "Time::HiRes" upgraded to version 1.86 (was 1.66) o "clock_nanosleep()" and "clock()" functions added o Support for the POSIX "clock_gettime()" and "clock_getres()" has been added o Return "undef" or an empty list if the C "gettimeofday()" func- tion fails o Improved "nanosleep" detection o Internal cleanup o Enhanced documentation o "Unicode::Collate" upgraded to version 0.52 o Now implements UCA Revision 14 (based on Unicode 4.1.0). o "Unicode::Collate-"new> method no longer overwrites user's $_ o Enhanced documentation o "Unicode::UCD" upgraded to version 0.24 o Documentation typos fixed o "User::grent" upgraded to version 1.01 o Documentation typo fixed o "utf8" upgraded to version 1.06 o Documentation typos fixed o "vmsish" upgraded to version 1.02 o Documentation typos fixed o "warnings" upgraded to version 1.05 o Gentler messing with "Carp::" internals o Internal cleanup o Documentation update o "Win32" upgraded to version 0.2601 o Provides Windows Vista support to "Win32::GetOSName" o Documentation enhancements o "XS::Typemap" upgraded to version 0.02 o Internal cleanup Utility Changes "h2xs" enhancements "h2xs" implements new option "--use-xsloader" to force use of "XSLoader" even in backwards compatible modules. The handling of authors' names that had apostrophes has been fixed. Any enums with negative values are now skipped. "perlivp" enhancements "perlivp" implements new option "-a" and will not check for *.ph files by default any more. Use the "-a" option to run all tests. New Documentation The perlglossary manpage is a glossary of terms used in the Perl docu- mentation, technical and otherwise, kindly provided by O'Reilly Media, inc. Performance Enhancements o Weak reference creation is now O(1) rather than O(n), courtesy of Nicholas Clark. Weak reference deletion remains O(n), but if dele- tion only happens at program exit, it may be skipped completely. o Salvador Fandino provided improvements to reduce the memory usage of "sort" and to speed up some cases. o Jarkko Hietaniemi and Andy Lester worked to mark as much data as possible in the C source files as "static", to increase the propor- tion of the executable file that the operating system can share between process, and thus reduce real memory usage on multi-user systems. Installation and Configuration Improvements Parallel makes should work properly now, although there may still be problems if "make test" is instructed to run in parallel. Building with Borland's compilers on Win32 should work more smoothly. In particular Steve Hay has worked to side step many warnings emitted by their compilers and at least one C compiler internal error. "Configure" will now detect "clearenv" and "unsetenv", thanks to a patch from Alan Burlison. It will also probe for "futimes" and whether "sprintf" correctly returns the length of the formatted string, which will both be used in perl 5.8.9. There are improved hints for next-3.0, vmesa, IX, Darwin, Solaris, Linux, DEC/OSF, HP-UX and MPE/iX Perl extensions on Windows now can be statically built into the Perl DLL, thanks to a work by Vadim Konovalov. (This improvement was actu- ally in 5.8.7, but was accidentally omitted from perl587delta). Selected Bug Fixes no warnings 'category' works correctly with -w Previously when running with warnings enabled globally via "-w", selec- tive disabling of specific warning categories would actually turn off all warnings. This is now fixed; now "no warnings 'io';" will only turn off warnings in the "io" class. Previously it would erroneously turn off all warnings. This bug fix may cause some programs to start correctly issuing warn- ings. Remove over-optimisation Perl 5.8.4 introduced a change so that assignments of "undef" to a scalar, or of an empty list to an array or a hash, were optimised away. As this could cause problems when "goto" jumps were involved, this change has been backed out. sprintf() fixes Using the sprintf() function with some formats could lead to a buffer overflow in some specific cases. This has been fixed, along with sev- eral other bugs, notably in bounds checking. In related fixes, it was possible for badly written code that did not follow the documentation of "Sys::Syslog" to have formatting vulnera- bilities. "Sys::Syslog" has been changed to protect people from poor quality third party code. Debugger and Unicode slowdown It had been reported that running under perl's debugger when processing Unicode data could cause unexpectedly large slowdowns. The most likely cause of this was identified and fixed by Nicholas Clark. Smaller fixes o "FindBin" now works better with directories where access rights are more restrictive than usual. o Several memory leaks in ithreads were closed. An improved implemen- tation of "threads::shared" is available on CPAN - this will be merged into 5.8.9 if it proves stable. o Trailing spaces are now trimmed from $! and $^E. o Operations that require perl to read a process' list of groups, such as reads of $( and $), now dynamically allocate memory rather than using a fixed sized array. The fixed size array could cause C stack exhaustion on systems configured to use large numbers of groups. o "PerlIO::scalar" now works better with non-default $/ settings. o You can now use the "x" operator to repeat a "qw//" list. This used to raise a syntax error. o The debugger now traces correctly execution in eval("")uated code that contains #line directives. o The value of the "open" pragma is no longer ignored for three-argu- ment opens. o The optimisation of "for (reverse @a)" introduced in perl 5.8.6 could misbehave when the array had undefined elements and was used in LVALUE context. Dave Mitchell provided a fix. o Some case insensitive matches between UTF-8 encoded data and 8 bit regexps, and vice versa, could give malformed character warnings. These have been fixed by Dave Mitchell and Yves Orton. o "lcfirst" and "ucfirst" could corrupt the string for certain cases where the length UTF-8 encoding of the string in lower case, upper case or title case differed. This was fixed by Nicholas Clark. o Perl will now use the C library calls "unsetenv" and "clearenv" if present to delete keys from %ENV and delete %ENV entirely, thanks to a patch from Alan Burlison. New or Changed Diagnostics Attempt to set length of freed array This is a new warning, produced in situations such as this: $r = do {my @a; \$#a}; $$r = 503; Non-string passed as bitmask This is a new warning, produced when number has been passed as a argu- ment to select(), instead of a bitmask. # Wrong, will now warn $rin = fileno(STDIN); ($nfound,$timeleft) = select($rout=$rin, undef, undef, $timeout); # Should be $rin = ''; vec($rin,fileno(STDIN),1) = 1; ($nfound,$timeleft) = select($rout=$rin, undef, undef, $timeout); Search pattern not terminated or ternary operator parsed as search pat- tern This syntax error indicates that the lexer couldn't find the final delimiter of a "?PATTERN?" construct. Mentioning the ternary operator in this error message makes it easier to diagnose syntax errors. Changed Internals There has been a fair amount of refactoring of the "C" source code, partly to make it tidier and more maintainable. The resulting object code and the "perl" binary may well be smaller than 5.8.7, in particu- lar due to a change contributed by Dave Mitchell which reworked the warnings code to be significantly smaller. Apart from being smaller and possibly faster, there should be no user-detectable changes. Andy Lester supplied many improvements to determine which function parameters and local variables could actually be declared "const" to the C compiler. Steve Peters provided new *_set macros and reworked the core to use these rather than assigning to macros in LVALUE context. Dave Mitchell improved the lexer debugging output under "-DT" Nicholas Clark changed the string buffer allocation so that it is now rounded up to the next multiple of 4 (or 8 on platforms with 64 bit pointers). This should reduce the number of calls to "realloc" without actually using any extra memory. The "HV"'s array of "HE*"s is now allocated at the correct (minimal) size, thanks to another change by Nicholas Clark. Compile with "-DPERL_USE_LARGE_HV_ALLOC" to use the old, sloppier, default. For XS or embedding debugging purposes, if perl is compiled with "-DDE- BUG_LEAKING_SCALARS_FORK_DUMP" in addition to "-DDEBUG_LEAKING_SCALARS" then a child process is "fork"ed just before global destruction, which is used to display the values of any scalars found to have leaked at the end of global destruction. Without this, the scalars have already been freed sufficiently at the point of detection that it is impossible to produce any meaningful dump of their contents. This feature was implemented by the indefatigable Nicholas Clark, based on an idea by Mike Giroux. Platform Specific Problems The optimiser on HP-UX 11.23 (Itanium 2) is currently partly disabled (scaled down to +O1) when using HP C-ANSI-C; the cause of problems at higher optimisation levels is still unclear. There are a handful of remaining test failures on VMS, mostly due to test fixes and minor module tweaks with too many dependencies to inte- grate into this release from the development stream, where they have all been corrected. The following is a list of expected failures with the patch number of the fix where that is known: ext/Devel/PPPort/t/ppphtest.t #26913 ext/List/Util/t/p_tainted.t #26912 lib/ExtUtils/t/PL_FILES.t #26813 lib/ExtUtils/t/basic.t #26813 t/io/fs.t t/op/cmp.t 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.org, the Perl Home Page. If you believe you have an unreported bug, please run the perlbug pro- gram 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 "perl -V", will be sent off to perlbug@perl.org to be analysed by the Perl porting team. You can browse and search the Perl 5 bugs at http://bugs.perl.org/ SEE ALSO The Changes file for exhaustive details on what changed. The INSTALL file for how to build Perl. The README file for general stuff. The Artistic and Copying files for copyright information. perl v5.8.8 2006-01-07 PERL588DELTA(1)
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