BURKS 2/BURKS_AUG97.ISO/SLAKWARE/D12/PERL1.TGZ/perl1.tar/usr/doc/perl5.003/Changes

Text File | 1996-03-25 | 101KB | 2,883 lines

-------------
Version 5.002
-------------

The main enhancement to the Perl core was the addition of prototypes.
Many of the modules that come with Perl have been extensively upgraded.

Other than that, nearly all the changes for 5.002 were bug fixes of one
variety or another, so here's the bug list, along with the "resolution"
for each of them.  If you wish to correspond about any of them, please
include the bug number (if any).

Added APPLLIB_EXP for embedded perl library support.
Files patched: perl.c

Couldn't define autoloaded routine by assignment to typeglob.
Files patched: pp_hot.c sv.c

NETaa13525: Tiny patch to fix installman -n
From: Larry Wall
Files patched: installman

NETaa13525: de-documented \v
Files patched: pod/perlop.pod pod/perlre.pod

NETaa13525: doc changes
Files patched: pod/perlop.pod pod/perltrap.pod

NETaa13525: perlxs update from Dean Roehrich
Files patched: pod/perlxs.pod

NETaa13525: rename powerunix to powerux
Files patched: MANIFEST hints/powerux.sh

NETaa13540: VMS uses CLK_TCK for HZ
Files patched: pp_sys.c

NETaa13721: pad_findlex core dumps on bad CvOUTSIDE()
From: Carl Witty
Files patched: op.c sv.c toke.c
 Each CV has a reference to the CV containing it lexically.  Unfortunately,
 it didn't reference-count this reference, so when the outer CV was freed,
 we ended up with a pointer to memory that got reused later as some other kind
 of SV.

NETaa13721: warning suppression
Files patched: toke.c
 (same)

NETaa13722: walk.c had inconsistent static declarations
From: Tim Bunce
Files patched: x2p/walk.c
 Consolidated the various declarations and made them consistent with
 the actual definitions.

NETaa13724: -MPackage=args patch
From: Tim Bunce
Files patched: perl.c pod/perlrun.pod
 Added in the -MPackage=args patch too.

NETaa13729: order-of-evaluation dependency in scope.c on leaving REGCONTEXT
From: "Jason Shirk"
Files patched: scope.c
 Did

                 I32 delta = SSPOPINT;
                 savestack_ix -= delta;  /* regexp must have croaked */

 instead.

NETaa13731: couldn't assign external lexical array to itself
From: [e-mail]
Files patched: op.c
 The pad_findmy routine was only checking previous statements for previous
 mention of external lexicals, so the fact that the current statement
 already mentioned @list was not noted.  It therefore allocated another
 reference to the outside lexical, and this didn't compare equal when
 the assigment parsing code was trying to determine whether there was a
 common variable on either side of the equals.  Since it didn't see the
 same variable, it thought it could avoid making copies of the values on
 the stack during list assignment.  Unfortunately, before using those
 values, the list assignment has to zero out the target array, which
 destroys the values.

 The fix was to make pad_findmy search the current statement as well.  This
 was actually a holdover from some old code that was trying to delay
 introduction of "my" variables until the next statement.  This is now
 done with a different mechanism, so the fix should not adversely affect
 that.

NETaa13733: s/// doesn't free old string when using copy mode
From: Larry Wall
Files patched: pp_ctl.c pp_hot.c
 When I removed the use of sv_replace(), I simply forgot to free the old char*.

NETaa13736: closures leaked memory
From: Carl Witty
Files patched: op.c pp.c
 This is a specific example of a more general bug, fixed as NETaa13760, having
 to do with reference counts on comppads.

NETaa13739: XSUB interface caches gimme in case XSUB clobbers it
From: Dean Roehrich
Files patched: pp_hot.c
 Applied suggest patch.  Also deleted second gimme declaration as redundant.

NETaa13760: comppad reference counts were inconsistent
From: Larry Wall
Files patched: op.c perl.c pp_ctl.c toke.c
 All official references to comppads are supposed to be through compcv now,
 but the transformation was not complete, resulting in memory leakage.

NETaa13761: sv_2pv() wrongly preferred IV to NV when SV was readonly
From: "Jack R. Lawler"
Files patched: sv.c
 Okay, I understand how this one happened.  This is a case where a
 beneficial fix uncovered a bug elsewhere.  I changed the constant
 folder to prefer integer results over double if the numbers are the
 same.  In this case, they aren't, but it leaves the integer value there
 anyway because the storage is already allocated for it, and it *might*
 be used in an integer context.  And since it's producing a constant, it
 sets READONLY.  Unfortunately, sv_2pv() bogusly preferred the integer
 value to the double when READONLY was set.  This never showed up if you
 just said

     print 1.4142135623731;

 because in that case, there was already a string value.


NETaa13772: shmwrite core dumps consistently
From: Gabe Schaffer
Files patched: opcode.h opcode.pl
 The shmwrite operator is a list operator but neglected to push a stack
 mark beforehand, because an 'm' was missing from opcode.pl.

NETaa13773: $. was misdocumented as read-only.
From: Inaba Hiroto
Files patched: pod/perlvar.pod
     <1.array-element-read-only>
     % perl -le '$,=", "; $#w=5; for (@w) { $_=1; } print @w'
     Modification of a read-only value attempted at -e line 1.
     % perl4 -le '$,=", "; $#w=5; for (@w) { $_=1; } print @w'
     1, 1, 1, 1, 1, 1

 This one may stay the way it is for performance reasons.

     <2.begin-local-RS>
     % cat abc
     a
     b
     c
     % perl -e 'BEGIN { local $/ = ""; } print "$.:$_" while <>;' abc
     1:a
     b
     c
     % perl -e '{ local $/ = ""; } print "$.:$_" while <>;' abc
     1:a
     2:b
     3:c

 $/ wasn't initialized early enough, so local set it back to permanently
 undefined on exit from the block.

     <3.grep-x0-bug>
     % perl -le 'print grep(/^-/ ? ($x=$_) x 0 : 1, "a", "-b", "c");'
     a

     % perl4 -le 'print grep(/^-/ ? ($x=$_) x 0 : 1, "a", "-b", "c");'
     ac

 An extra mark was left on the stack if (('x') x $repeat) was used in a scalar
 context.

     <4.input-lineno-assign>
     # perl -w does not complain about assignment to $. (Is this just a feature?)
     # perlvar.pod says "This variable should be considered read-only."
     % cat abc
     a
     b
     c
     % perl -wnle '$. = 10 if $. == 2; print "$.:$_"' abc
     1:a
     10:b
     11:c

 Fixed doc.

     <5.local-soft-ref.bug>
     % perl -e 'local ${"a"}=1;'
     zsh: 529 segmentation fault  perl -e 'local ${"a"}=1;'

 Now says
     Can't localize a reference at -e line 1.

     <6.package-readline>
     % perl -e 'package foo; sub foo { 1; } package main; $_ = foo::foo(); print'
     1
     % perl -e '
       package readline; sub foo { 1; } package main; $_ = readline::foo(); print'
     Undefined subroutine &main::foo called at -e line 1.
     % perl -e '
       package readline; sub foo { 1; } package main; $_ = &readline::foo(); print'
     1

 Now treats foo::bar correctly even if foo is a keyword.

     <7.page-head-set-to-null-string>
     % cat page-head
     #From: [e-mail] (Russell Fulton)
     #Newsgroups: comp.lang.perl
     #Subject: This script causes Perl 5.00 to sementation fault
     #Date: 15 Nov 1994 00:11:37 GMT
     #Message-ID: <3a8ubp$[e-mail]>

     select((select(STDOUT),  $^='')[0]);  #this is the critical line
     $a = 'a';
     write ;
     exit;

     format STDOUT =
     @<<<<<<
     $a
     .

     % perl page-head
     zsh: 1799 segmentation fault  perl /tmp/page-head

 Now says
     Undefined top format "main::" called at ./try line 11.

     <8.sub-as-index>
     # parser bug?
     % perl -le 'sub foo {0}; $x[0]=0;$x[foo]<=0'
     Unterminated <> operator at -e line 1.
     % perl -le 'sub foo {0}; $x[0]=0;$x[foo()]<=0'

 A right square bracket now forces expectation of an operator.

     <9.unary-minus-to-regexp-var>
     % cat minus-reg
     #From: Michael Cook <[e-mail]>
     #Newsgroups: comp.lang.perl
     #Subject: bug: print -$1
     #Date: 01 Feb 1995 15:31:25 GMT
     #Message-ID: <[e-mail]>

     $_ = "123";
     /\d+/;
     print $&, "\n";
     print -$&, "\n";
     print 0-$&, "\n";

     % perl minus-reg
     123
     123
     -123

 Apparently already fixed in my copy.

     <10.vec-segv>
     % cat vec-bug
     ## Offset values are changed for my machine.

     #From: [e-mail] (Conrad Augustin)
     #Subject: perl5 vec() bug?
     #Message-ID: <[e-mail]>
     #Date: Tue, 22 Nov 1994 19:37:28 GMT

     #The following two statements each produce a segmentation fault in perl5:

     #vec($a, 21406, 32) = 1;  # seg fault
     vec($a, 42813, 16) = 1;  # seg fault

     #When the offset values are one less, all's well:
     #vec($a, 21405, 32) = 1;  # ok
     #vec($a, 42812, 16) = 1;  # ok

     #Interestingly, this is ok for all high values of N:
     #$N=1000000; vec($a, $N, 8) = 1;

     % perl vec-bug
     zsh: 1806 segmentation fault  perl vec-bug

 Can't reproduce this one.


NETaa13773: $/ not correctly localized in BEGIN
Files patched: perl.c
 (same)

NETaa13773: foo::bar was misparsed if foo was a reserved word
Files patched: toke.c toke.c
 (same)

NETaa13773: right square bracket didn't force expectation of operator
Files patched: toke.c
 (same)

NETaa13773: scalar ((x) x $repeat) left stack mark
Files patched: op.c
 (same)

NETaa13778: -w coredumps on <$>
From: Hans Mulder
Files patched: pp_hot.c toke.c
 Now produces suggested error message.  Also installed guard in warning code
 that coredumped.

NETaa13779: foreach didn't use savestack mechanism
From: Hans Mulder
Files patched: cop.h pp_ctl.c
 The foreach mechanism saved the old scalar value on the context stack
 rather than the savestack.  It could consequently get out of sync if
 unexpectedly unwound.

NETaa13785: GIMME sometimes used wrong context frame
From: Greg Earle
Files patched: embed.h global.sym op.h pp_ctl.c proto.h
 The expression inside the return was taking its context from the immediately
 surrounding block rather than the innermost surrounding subroutine call.

NETaa13797: could modify sv_undef through auto-vivification
From: Ilya Zakharevich
Files patched: pp.c
 Inserted the missing check for readonly values on auto-vivification.

NETaa13798: if (...) {print} treats print as quoted
From: Larry Wall
Files patched: toke.c
 The trailing paren of the condition was setting expectations to XOPERATOR
 rather than XBLOCK, so it was being treated like ${print}.

NETaa13926: commonality was not detected in assignments using COND_EXPR
From: Mark Hanson
Files patched: opcode.h opcode.pl
 The assignment compiler didn't check the 2nd and 3rd args of a ?:
 for commonality.  It still doesn't, but I made ?: into a "dangerous"
 operator so it is forced to treat it as common.

NETaa13957: was marking the PUSHMARK as modifiable rather than the arg
From: David Couture
Files patched: op.c sv.c
 It was marking the PUSHMARK as modifiable rather than the arg.

NETaa13962: documentation of behavior of scalar <*> was unclear
From: Tom Christiansen
Files patched: pod/perlop.pod
 Added the following to perlop:

 A glob only evaluates its (embedded) argument when it is starting a new
 list.  All values must be read before it will start over.  In a list
 context this isn't important, because you automatically get them all
 anyway.  In a scalar context, however, the operator returns the next value
 each time it is called, or a FALSE value if you've just run out.  Again,
 FALSE is returned only once.  So if you're expecting a single value from
 a glob, it is much better to say

     ($file) = <blurch*>;

 than

     $file = <blurch*>;

 because the latter will alternate between returning a filename and
 returning FALSE.


NETaa13986: split ignored /m pattern modifier
From: Winfried Koenig
Files patched: pp.c
 Fixed to work like m// and s///.

NETaa13992: regexp comments not seen after + in non-extended regexp
From: Mark Knutsen
Files patched: regcomp.c
 The code to skip regexp comments was guarded by a conditional that only
 let it work when /x was in effect.

NETaa14014: use subs should not count as definition, only as declaration
From: Keith Thompson
Files patched: sv.c
 On *foo = \&bar, doesn't set GVf_IMPORTED if foo and bar are in same package.

NETaa14021: sv_inc and sv_dec "upgraded" magical SV to non-magical
From: Paul A Sand
Also: Andreas Koenig
Files patched: sv.c
 The sv_inc() and sv_dec() routines "upgraded" null magical SVs to non-magical.

NETaa14086: require should check tainting
From: Karl Simon Berg
Files patched: pp_ctl.c
 Since we shouldn't allow tainted requires anyway, it now says:

   Insecure dependency in require while running with -T switch at tst.pl line 1.

NETaa14104: negation fails on magical variables like $1
From: tim
Files patched: pp.c
 Negation was failing on magical values like $1.  It was testing the wrong
 bits and also failed to provide a final "else" if none of the bits matched.

NETaa14107: deep sort return leaked contexts
From: Quentin Fennessy
Files patched: pp_ctl.c
 Needed to call dounwind() appropriately.

NETaa14129: attempt to localize via a reference core dumps
From: Michele Sardo
Files patched: op.c pod/perldiag.pod
 Now produces an error "Can't localize a reference", with explanation in
 perldiag.

NETaa14138: substr() and s/// can cause core dump
From: Andrew Vignaux
Files patched: pp_hot.c
 Forgot to call SvOOK_off() on the SV before freeing its string.

NETaa14145: ${@INC}[0] dumped core in debugger
From: Hans Mulder
Files patched: sv.c
 Now croaks "Bizarre copy of ARRAY in block exit", which is better than
 a core dump.  The fact that ${@INC}[0] means $INC[0] outside the debugger
 is a different bug.

NETaa14147: bitwise assignment ops wipe out byte of target string
From: Jim Richardson
Files patched: doop.c
 The code was assuming that the target was not either of the two operands,
 which is false for an assignment operator.

NETaa14153: lexing of lexicals in patterns fooled by character class
From: Dave Bianchi
Files patched: toke.c
 It never called the dwimmer, which is how it fooled it.

NETaa14154: allowed autoloaded methods by recognizing sub method; declaration
From: Larry Wall
Files patched: gv.c
 Made sub method declaration sufficient for autoloader to stop searching on.

NETaa14156: shouldn't optimize block scope on tainting
From: Pete Peterson
Files patched: op.c toke.c
 I totally disabled the block scope optimization when running tainted.

NETaa14157: -T and -B only allowed 1/30 "odd" characters--changed to 1/3
From: Tor Lillqvist
Files patched: pp_sys.c
 Applied suggested patch.

NETaa14160: deref of null symbol should produce null list
From: Jared Rhine
Files patched: pp_hot.c
 It didn't check for list context before returning undef.

NETaa14162: POSIX::gensym now returns a symbol reference
From: Josh N. Pritikin
Also: Tim Bunce
Files patched: ext/POSIX/POSIX.pm
 Applied suggested patch.

NETaa14164: POSIX autoloader now distinguishes non-constant "constants"
From: Tim Bunce <[e-mail]>
Files patched: ext/POSIX/POSIX.pm ext/POSIX/POSIX.xs
 The .xs file now distinguishes non-constant "constants" by setting EAGAIN.
 This will also let us use #ifdef within the .xs file to de-constantify
 any other macros that happen not to be constants even if they don't use
 an argument.

NETaa14166: missing semicolon after "my" induces core dump
From: Thomas Kofler
Files patched: toke.c
 The parser was left thinking it was still processing a "my", and flubbed.
 I made it wipe out the "in_my" variable on a syntax error.

NETaa14166: missing semicolon after "my" induces core dump"
Files patched: toke.c
 (same)

NETaa14206: can now use English and strict at the same time
From: Andrew Wilcox
Files patched: sv.c
 It now counts imported symbols as okay under "use strict".

NETaa14206: can now use English and strict at the same time
Files patched: gv.c pod/perldiag.pod
 (same)

NETaa14265: elseif now produces severe warning
From: Yutao Feng
Files patched: pod/perldiag.pod toke.c
 Now complains explicitly about "elseif".

NETaa14279: list assignment propagated taintedness to independent scalars
From: Tim Freeman
Files patched: pp_hot.c
 List assignment needed to be modified so that tainting didn't propagate
 between independent scalar values.

NETaa14312: undef in @EXPORTS core dumps
From: William Setzer
Files patched: lib/Exporter.pm
 Now says:

     Unable to create sub named "t::" at lib/Exporter.pm line 159.
     Illegal null symbol in @t::EXPORT at -e line 1
     BEGIN failed--compilation aborted at -e line 1.


NETaa14312: undef in @EXPORTS core dumps
Files patched: pod/perldiag.pod sv.c
 (same)

NETaa14321: literal @array check shouldn't happen inside embedded expressions
From: Mark H. Nodine
Files patched: toke.c
 The general solution to this is to disable the literal @array check within
 any embedded expression.  For instance, this also failed bogusly:

     print "$foo{@foo}";

 The reason fixing this also fixes the s///e problem is that the lexer
 effectively puts the RHS into a do {} block, making the expression
 embedded within curlies, as far as the error message is concerned.

NETaa14322: now localizes $! during POSIX::AUTOLOAD
From: Larry Wall
Files patched: ext/POSIX/POSIX.pm
 Added local $! = 0.

NETaa14324: defined() causes spurious sub existence
From: "Andreas Koenig"
Files patched: op.c pp.c
 It called pp_rv2cv which wrongly assumed it could add any sub it referenced.

NETaa14336: use Module () forces import of nothing
From: Tim Bunce
Files patched: op.c
 use Module () now refrains from calling import at all.

NETaa14353: added special HE allocator
From: Larry Wall
Files patched: global.sym

NETaa14353: added special HE allocator
Files patched: hv.c perl.h

NETaa14353: array extension now converts old memory to SV storage.
Files patched: av.c av.h sv.c

NETaa14353: hashes now convert old storage into SV arenas.
Files patched: global.sym

NETaa14353: hashes now convert old storage into SV arenas.
Files patched: hv.c perl.h

NETaa14353: upgraded SV arena allocation
Files patched: proto.h

NETaa14353: upgraded SV arena allocation
Files patched: perl.c sv.c

NETaa14422: added rudimentary prototypes
From: Gisle Aas
Files patched: Makefile.SH op.c op.c perly.c perly.c.diff perly.h perly.y proto.h sv.c toke.c
 Message-Id: <[e-mail]>
 To: [e-mail] (Andy Dougherty)
 Cc: [e-mail]
 Subject: Re: Jumbo Configure patch vs. 1m.
 Date: Thu, 28 Sep 95 17:18:54 -0700
 From: [e-mail] (Larry Wall)

 : No.  Larry's currently got the patch pumpkin for all such core perl topics.

 I dunno whether you should let me have the patch pumpkin or not.  To fix
 a Sev 2 I just hacked in rudimentary prototypes.  :-)

 We can now define true unary subroutines, as well as argumentless
 subroutines:

     sub baz () { 12; }            # Must not have argument
     sub bar ($) { $_[0] * 7 }        # Must have exactly one argument
     sub foo ($@) { print "@_\n" }    # Must have at least one argument
     foo bar baz / 2 || "oops", "is the answer";

 This prints "42 is the answer" on my machine.  That is, it's the same as

     foo( bar( baz() / 2) || "oops", "is the answer");

 Attempting to compile

     foo;

 results in

     Too few arguments for main::foo at ./try line 8, near "foo;"

 Compiling

     bar 1,2,3;

 results in

     Too many arguments for main::bar at ./try line 8, near "foo;"

 But

     @array = ('a','b','c');
     foo @array, @array;

 prints "3 a b c" because the $ puts the first arg of foo into scalar context.

 The main win at this point is that we can say

     sub AAA () { 1; }
     sub BBB () { 2; }

 and the user can say AAA + BBB and get 3.

 I'm not quite sure how this interacts with autoloading though.  I fear
 POSIX.pm will need to say

     sub E2BIG ();
     sub EACCES ();
     sub EAGAIN ();
     sub EBADF ();
     sub EBUSY ();
     ...
     sub _SC_STREAM_MAX ();
     sub _SC_TZNAME_MAX ();
     sub _SC_VERSION ();

 unless we can figure out how to efficiently declare a default prototype
 at import time.  Meaning, not using eval.  Currently

     *foo = \&bar;

 (the ordinary import mechanism) implicitly stubs &bar with no prototype if
 &bar is not yet declared.  It's almost like you want an AUTOPROTO to
 go with your AUTOLOAD.

 Another thing to rub one's 5 o'clock shadow over is that there's no way
 to apply a prototype to a method call at compile time.

 And no, I don't want to have the

     sub howabout ($formal, @arguments) { ... }

 argument right now.

 Larry

NETaa14422: couldn't take reference of a prototyped function
Files patched: op.c
 (same)

NETaa14423: use didn't allow expressions involving the scratch pad
From: Graham Barr
Files patched: op.c perly.c perly.c.diff perly.y proto.h vms/perly_c.vms
 Applied suggested patch.

NETaa14444: lexical scalar didn't autovivify
From: Gurusamy Sarathy
Files patched: op.c pp_hot.c
 It didn't have code in pp_padsv to do the right thing.

NETaa14448: caller could dump core when used within an eval or require
From: Danny R. Faught
Files patched: pp_ctl.c
 caller() was incorrectly assuming the context stack contained a subroutine
 context when it in fact contained an eval context.

NETaa14451: improved error message on bad pipe filehandle
From: Danny R. Faught
Files patched: pp_sys.c
 Now says the slightly more informative

     Can't use an undefined value as filehandle reference at ./try line 3.

NETaa14462: pp_dbstate had a scope leakage on recursion suppression
From: Tim Bunce
Files patched: pp_ctl.c
 Swapped the code in question around.

NETaa14482: sv_unref freed ref prematurely at times
From: Gurusamy Sarathy
Files patched: sv.c
 Made sv_unref() mortalize rather than free the old reference.

NETaa14484: appending string to array produced bizarre results
From: Greg Ward
Also: Malcolm Beattie
Files patched: pp_hot.c
 Will now say, "Can't coerce ARRAY to string".

NETaa14525: assignment to globs didn't reset them correctly
From: Gurusamy Sarathy
Files patched: sv.c
 Applied parts of patch not overridden by subsequent patch.

NETaa14529: a partially matching subpattern could spoof infinity detector
From: Wayne Berke
Files patched: regexec.c
 A partial match on a subpattern could fool the infinite regress detector
 into thinking progress had been made.
 The previous workaround prevented another bug (NETaa14529) from being fixed,
 so I've backed it out.  I'll need to think more about how to detect failure
 to progress.  I'm still hopeful it's not equivalent to the halting problem.

NETaa14535: patches from Gurusamy Sarathy
From: Gurusamy Sarathy
Files patched: op.c pp.c pp_hot.c regexec.c sv.c toke.c
 Applied most recent suggested patches.

NETaa14537: select() can return too soon
From: Matt Kimball
Also: Andreas Gustafsson
Files patched: pp_sys.c

NETaa14538: method calls were treated like do {} under loop modifiers
From: Ilya Zakharevich
Files patched: perly.c perly.y
 Needed to take the OPf_SPECIAL flag off of entersubs from method reductions.
 (It was probably a cut-and-paste error from long ago.)

NETaa14540: foreach (@array) no longer does extra stack copy
From: [e-mail]
Files patched: Todo op.c pp_ctl.c pp_hot.c
 Fixed by doing the foreach(@array) optimization, so it iterates
 directly through the array, and can detect the implicit shift from
 referencing <>.

NETaa14541: new version of perlbug
From: Kenneth Albanowski
Files patched: README pod/perl.pod utils/perlbug.PL
 Brought it up to version 1.09.

NETaa14541: perlbug 1.11
Files patched: utils/perlbug.PL
 (same)

NETaa14548: magic sets didn't check private OK bits
From: W. Bradley Rubenstein
Files patched: mg.c
 The magic code was getting mixed up between private and public POK bits.

NETaa14550: made ~ magic magical
From: Tim Bunce
Files patched: sv.c
 Applied suggested patch.

NETaa14551: humongous header causes infinite loop in format
From: Grace Lee
Files patched: pp_sys.c
 Needed to check for page exhaustion after doing top-of-form.

NETaa14558: attempt to call undefined top format core dumped
From: Hallvard B Furuseth
Files patched: pod/perldiag.pod pp_sys.c
 Now issues an error on attempts to call a non-existent top format.

NETaa14561: Gurusamy Sarathy's G_KEEPERR patch
From: Andreas Koenig
Also: Gurusamy Sarathy
Also: Tim Bunce
Files patched: cop.h interp.sym perl.c perl.h pp_ctl.c pp_sys.c sv.c toke.c
 Applied latest patch.

NETaa14581: shouldn't execute BEGIN when there are compilation errors
From: Rickard Westman
Files patched: op.c
 Perl should not try to execute BEGIN and END blocks if there's been a
 compilation error.

NETaa14582: got SEGV sorting sparse array
From: Rick Pluta
Files patched: pp_ctl.c
 Now weeds out undefined values much like Perl 4 did.
 Now sorts undefined values to the front.

NETaa14582: sort was letting unsortable values through to comparison routine
Files patched: pp_ctl.c
 (same)

NETaa14585: globs in pad space weren't properly cleaned up
From: Gurusamy Sarathy
Files patched: op.c pp.c pp_hot.c sv.c
 Applied suggested patch.

NETaa14614: now does dbmopen with perl_eval_sv()
From: The Man
Files patched: perl.c pp_sys.c proto.h
 dbmopen now invokes perl_eval_sv(), which should handle error conditions
 better.

NETaa14618: exists doesn't work in GDBM_File
From: Andrew Wilcox
Files patched: ext/GDBM_File/GDBM_File.xs
 Applied suggested patch.

NETaa14619: tied()
From: Larry Wall
Also: Paul Marquess
Files patched: embed.h global.sym keywords.h keywords.pl opcode.h opcode.pl pp_sys.c toke.c
 Applied suggested patch.

NETaa14636: Jumbo Dynaloader patch
From: Tim Bunce
Files patched: ext/DynaLoader/DynaLoader.pm ext/DynaLoader/dl_dld.xs ext/DynaLoader/dl_dlopen.xs ext/DynaLoader/dl_hpux.xs ext/DynaLoader/dl_next.xs ext/DynaLoader/dl_vms.xs ext/DynaLoader/dlutils.c
 Applied suggested patches.

NETaa14637: checkcomma routine was stupid about bareword sub calls
From: Tim Bunce <[e-mail]>
Files patched: toke.c
 The checkcomma routine was stupid about bareword sub calls.

NETaa14639: (?i) didn't reset on runtime patterns
From: Mark A. Scheel
Files patched: op.h pp_ctl.c toke.c
 It didn't distinguish between permanent flags outside the pattern and
 temporary flags within the pattern.

NETaa14649: selecting anonymous globs dumps core
From: Chip Salzenberg
Files patched: cop.h doio.c embed.h global.sym perl.c pp_sys.c proto.h
 Applied suggested patch, but reversed the increment and decrement to avoid
 decrementing and freeing what we're going to increment.

NETaa14655: $? returned negative value on AIX
From: Kim Frutiger
Also: Stephen D. Lee
Files patched: pp_sys.c
 Applied suggested patch.

NETaa14668: {2,} could match once
From: Hugo van der Sanden
Files patched: regexec.c
 When an internal pattern failed a conjecture, it didn't back off on the
 number of times it thought it had matched.

NETaa14673: open $undefined dumped core
From: Samuli K{rkk{inen
Files patched: pp_sys.c
 pp_open() didn't check its argument for globness.

NETaa14683: stringifies were running pad out of space
From: Robin Barker
Files patched: op.h toke.c
 Increased PADOFFSET to a U32, and made lexer not put double-quoted strings
 inside OP_STRINGIFY unless they really needed it.

NETaa14689: shouldn't have . in @INC when tainting
From: William R. Somsky
Files patched: perl.c
 Now does not put . into @INC when tainting.  It may still be added with a

     use lib ".";

 or, to put it at the end,

     BEGIN { push(@INC, ".") }

 but this is not recommended unless a chdir to a known location has been done
 first.

NETaa14690: values inside tainted SVs were ignored
From: "James M. Stern"
Files patched: pp.c pp_ctl.c
 It was assuming that a tainted value was a string.

NETaa14692: format name required qualification under use strict
From: Tom Christiansen
Files patched: gv.c
 Now treats format names the same as subroutine names.

NETaa14695: added simple regexp caching
From: John Rowe
Files patched: pp_ctl.c
 Applied suggested patch.

NETaa14697: regexp comments were sometimes wrongly treated as literal text
From: Tom Christiansen
Files patched: regcomp.c
 The literal-character grabber didn't know about extended comments.
 N.B. '#' is treated as a comment character whenever the /x option is
 used now, so you can't include '#' as a simple literal in /x regexps.

 (By the way, Tom, the boxed form of quoting in the previous enclosure is
 exceeding antisocial when you want to extract the code from it.)

NETaa14704: closure got wrong outer scope if outer sub was predeclared
From: Marc Paquette
Files patched: op.c
 The outer scope of the anonymous sub was set to the stub rather than to
 the actual subroutine.  I kludged it by making the outer scope of the
 stub be the actual subroutine, if anything is depending on the stub.

NETaa14705: $foo .= $foo did free memory read
From: Gerd Knops
Files patched: sv.c
 Now modifies address to copy if it was reallocated.

NETaa14709: Chip's FileHandle stuff
From: Larry Wall
Also: Chip Salzenberg
Files patched: MANIFEST ext/FileHandle/FileHandle.pm ext/FileHandle/FileHandle.xs ext/FileHandle/Makefile.PL ext/POSIX/POSIX.pm ext/POSIX/POSIX.pod ext/POSIX/POSIX.xs lib/FileCache.pm lib/Symbol.pm t/lib/filehand.t t/lib/posix.t
 Applied suggested patches.

NETaa14711: added (&) and (*) prototypes for blocks and symbols
From: Kenneth Albanowski
Files patched: Makefile.SH op.c perly.c perly.h perly.y toke.c
 & now means that it must have an anonymous sub as that argument.  If
 it's the first argument, the sub may be specified as a block in the
 indirect object slot, much like grep or sort, which have prototypes of (&@).

 Also added * so you can do things like

     sub myopen (*;$);

     myopen(FOO, $filename);

NETaa14713: setuid FROM root now defaults to not do tainting
From: Tony Camas
Files patched: mg.c perl.c pp_hot.c
 Applied suggested patch.

NETaa14714: duplicate magics could be added to an SV
From: Yary Hluchan
Files patched: sv.c sv.c
 The sv_magic() routine didn't properly check to see if it already had a
 magic of that type.  Ordinarily it would have, but it was called during
 mg_get(), which forces the magic flags off temporarily.

NETaa14721: sub defined during erroneous do-FILE caused core dump
From: David Campbell
Files patched: op.c
 Fixed the seg fault.  I couldn't reproduce the return problem.

NETaa14734: ref should never return undef
From: Dale Amon
Files patched: pp.c t/op/overload.t
 Now returns null string.

NETaa14751: slice of undefs now returns null list
From: Tim Bunce
Files patched: pp.c pp_hot.c
 Null list clobberation is now done in lslice, not aassign.

NETaa14789: select coredumped on Linux
From: Ulrich Kunitz
Files patched: pp_sys.c
 Applied suggested patches, more or less.

NETaa14789: straightened out ins and out of duping
Files patched: lib/IPC/Open3.pm
 (same)

NETaa14791: implemented internal SUPER class
From: Nick Ing-Simmons
Also: Dean Roehrich
Files patched: gv.c
 Applied suggested patch.

NETaa14845: s/// didn't handle offset strings
From: Ken MacLeod
Files patched: pp_ctl.c
 Needed a call to SvOOK_off(targ) in pp_substcont().

NETaa14851: Use of << to mean <<"" is deprecated
From: Larry Wall
Files patched: toke.c

NETaa14865: added HINT_BLOCK_SCOPE to "elsif"
From: Jim Avera
Files patched: perly.y
 Needed to set HINT_BLOCK_SCOPE on "elsif" to prevent the do block from
 being optimized away, which caused the statement transition in elsif
 to reset the stack too far back.

NETaa14876: couldn't delete localized GV safely
From: John Hughes
Files patched: pp.c scope.c
 The reference count of the "borrowed" GV needed to be incremented while
 there was a reference to it in the savestack.

NETaa14887: couldn't negate magical scalars
From: ian
Also: Gurusamy Sarathy
Files patched: pp.c
 Applied suggested patch, more or less.  (It's not necessary to test both
 SvNIOK and SvNIOKp, since the private bits are always set if the public
 bits are set.)

NETaa14893: /m modifier was sticky
From: Jim Avera
Files patched: pp_ctl.c
 pp_match() and pp_subst() were using an improperly scoped SAVEINT to restore
 the value of the internal variable multiline.

NETaa14893: /m modifier was sticky
Files patched: cop.h pp_hot.c
 (same)

NETaa14916: complete.pl retained old return value
From: Martyn Pearce
Files patched: lib/complete.pl
 Applied suggested patch.

NETaa14928: non-const 3rd arg to split assigned to list could coredump
From: Hans de Graaff
Files patched: op.c
 The optimizer was assuming the OP was an OP_CONST.

NETaa14942: substr as lvalue could disable magic
From: Darrell Kindred <[e-mail]>
Files patched: pp.c
 The substr was disabling the magic of $1.

NETaa14990: "not" not parseable when expecting term
From: "Randal L. Schwartz"
Files patched: perly.c perly.c.diff perly.y vms/perly_c.vms
 The NOTOP production needed to be moved down into the terms.

NETaa14993: Bizarre copy of formline
From: Tom Christiansen
Also: Charles Bailey
Files patched: sv.c
 Applied suggested patch.

NETaa14998: sv_add_arena() no longer leaks memory
From: Andreas Koenig
Files patched: av.c hv.c perl.h sv.c
 Now keeps one potential arena "on tap", but doesn't use it unless there's
 demand for SV headers.  When an AV or HV is extended, its old memory
 becomes the next potential arena unless there already is one, in which
 case it is simply freed.  This will have the desired property of not
 stranding medium-sized chunks of memory when extending a single array
 repeatedly, but will not degrade when there's no SV demand beyond keeping
 one chunk of memory on tap, which generally will be about 250 bytes big,
 since it prefers the earlier freed chunk over the later.  See the nice_chunk
 variable.

NETaa14999: $a and $b now protected from use strict and lexical declaration
From: Tom Christiansen
Files patched: gv.c pod/perldiag.pod toke.c
 Bare $a and $b are now allowed during "use strict".  In addition,
 the following diag was added:

 =item Can't use "my %s" in sort comparison

 (F) The global variables $a and $b are reserved for sort comparisons.
 You mentioned $a or $b in the same line as the <=> or cmp operator,
 and the variable had earlier been declared as a lexical variable.
 Either qualify the sort variable with the package name, or rename the
 lexical variable.


NETaa15034: use strict refs should allow calls to prototyped functions
From: Roderick Schertler
Files patched: perly.c perly.c.diff perly.y toke.c vms/perly_c.vms
 Applied patch suggested by Chip.

NETaa15083: forced $AUTOLOAD to be untainted
From: Tim Bunce
Files patched: gv.c pp_hot.c
 Stripped any taintmagic from $AUTOLOAD after setting it.

NETaa15084: patch for Term::Cap
From: Mark Kaehny
Also: Hugo van der Sanden
Files patched: lib/Term/Cap.pm
 Applied suggested patch.

NETaa15086: null pattern could cause coredump in s//_$1_/
From: "Paul E. Maisano"
Files patched: cop.h pp_ctl.c
 If the replacement pattern was complicated enough to cause pp_substcont
 to be called, then it lost track of which REGEXP* it was supposed to
 be using.

NETaa15087: t/io/pipe.t didn't work on AIX
From: Andy Dougherty
Files patched: t/io/pipe.t
 Applied suggested patch.

NETaa15088: study was busted
From: Hugo van der Sanden
Files patched: opcode.h opcode.pl pp.c
 It was studying its scratch pad target rather than the argument supplied.

NETaa15090: MSTATS patch
From: Tim Bunce
Files patched: global.sym malloc.c perl.c perl.h proto.h
 Applied suggested patch.

NETaa15098: longjmp out of magic leaks memory
From: Chip Salzenberg
Files patched: mg.c sv.c
 Applied suggested patch.

NETaa15102: getpgrp() is broken if getpgrp2() is available
From: Roderick Schertler
Files patched: perl.h pp_sys.c
 Applied suggested patch.

NETaa15103: prototypes leaked opcodes
From: Chip Salzenberg
Files patched: op.c
 Applied suggested patch.

NETaa15107: quotameta memory bug on all metacharacters
From: Chip Salzenberg
Files patched: pp.c
 Applied suggested patch.

NETaa15108: Fix for incomplete string leak
From: Chip Salzenberg
Files patched: toke.c
 Applied suggested patch.

NETaa15110: couldn't use $/ with 8th bit set on some architectures
From: Chip Salzenberg
Files patched: doop.c interp.sym mg.c op.c perl.c perl.h pp_ctl.c pp_hot.c pp_sys.c sv.c toke.c util.c
 Applied suggested patches.

NETaa15112: { a_1 => 2 } didn't parse as expected
From: Stuart M. Weinstein
Files patched: toke.c
 The little dwimmer was only skipping ALPHA rather than ALNUM chars.

NETaa15123: bitwise ops produce spurious warnings
From: Hugo van der Sanden
Also: Chip Salzenberg
Also: Andreas Gustafsson
Files patched: sv.c
 Decided to suppress the warning in the conversion routines if merely converting
 a temporary, which can never be a user-supplied value anyway.

NETaa15129: #if defined (foo) misparsed in h2ph
From: Roderick Schertler <[e-mail]>
Files patched: utils/h2ph.PL
 Applied suggested patch.

NETaa15131: some POSIX functions assumed valid filehandles
From: Chip Salzenberg
Files patched: ext/POSIX/POSIX.xs
 Applied suggested patch.

NETaa15151: don't optimize split on OPpASSIGN_COMMON
From: Huw Rogers
Files patched: op.c
 Had to swap the optimization down to after the assignment op is generated
 and COMMON is calculated, and then clean up the resultant tree differently.

NETaa15154: MakeMaker-5.18
From: Andreas Koenig
Files patched: MANIFEST lib/ExtUtils/Liblist.pm lib/ExtUtils/MM_VMS.pm lib/ExtUtils/MakeMaker.pm lib/ExtUtils/Mksymlists.pm
 Brought it up to 5.18.

NETaa15156: some Exporter tweaks
From: Roderick Schertler
Also: Tim Bunce
Files patched: lib/Exporter.pm
 Also did Tim's Tiny Trivial patch.

NETaa15157: new version of Test::Harness
From: Andreas Koenig
Files patched: lib/Test/Harness.pm
 Applied suggested patch.

NETaa15175: overloaded nomethod has garbage 4th op
From: Ilya Zakharevich
Files patched: gv.c
 Applied suggested patch.

NETaa15179: SvPOK_only shouldn't back off on offset pointer
From: [e-mail]
Files patched: sv.h
 SvPOK_only() was calling SvOOK_off(), which adjusted the string pointer
 after tr/// has already acquired it.  It shouldn't really be necessary
 for SvPOK_only() to undo an offset string pointer, since there's no
 conflict with a possible integer value where the offset is stored.

NETaa15193: & now always bypasses prototype checking
From: Larry Wall
Files patched: dump.c op.c op.h perly.c perly.c.diff perly.y pod/perlsub.pod pp_hot.c proto.h toke.c vms/perly_c.vms vms/perly_h.vms
 Turned out to be a big hairy deal because the lexer turns foo() into &foo().
 But it works consistently now.  Also fixed pod.

NETaa15197: 5.002b2 is 'appending' to $@
From: Gurusamy Sarathy
Files patched: pp_ctl.c
 Applied suggested patch.

NETaa15201: working around Linux DBL_DIG problems
From: Kenneth Albanowski
Files patched: hints/linux.sh sv.c
 Applied suggested patch.

NETaa15208: SelectSaver
From: Chip Salzenberg
Files patched: MANIFEST lib/SelectSaver.pm
 Applied suggested patch.

NETaa15209: DirHandle
From: Chip Salzenberg
Files patched: MANIFEST lib/DirHandle.pm t/lib/dirhand.t

NETaa15210: sysopen()
From: Chip Salzenberg
Files patched: doio.c keywords.pl lib/ExtUtils/typemap opcode.pl pod/perlfunc.pod pp_hot.c pp_sys.c proto.h toke.c
 Applied suggested patch.  Hope it works...

NETaa15211: use mnemonic names in Safe setup
From: Chip Salzenberg
Files patched: ext/Safe/Safe.pm
 Applied suggested patch, more or less.

NETaa15214: prototype()
From: Chip Salzenberg
Files patched: ext/Safe/Safe.pm global.sym keywords.pl opcode.pl pp.c toke.c
 Applied suggested patch.

NETaa15217: -w problem with -d:foo
From: Tim Bunce
Files patched: perl.c
 Applied suggested patch.

NETaa15218: *GLOB{ELEMENT}
From: Larry Wall
Files patched: Makefile.SH embed.h ext/Safe/Safe.pm keywords.h opcode.h opcode.h opcode.pl perly.c perly.c.diff perly.y pp_hot.c t/lib/safe.t vms/perly_c.vms

NETaa15219: Make *x=\*y do like *x=*y
From: Chip Salzenberg
Files patched: sv.c
 Applied suggested patch.

NETaa15221: Indigestion with Carp::longmess and big eval '...'s
From: Tim Bunce
Files patched: lib/Carp.pm
 Applied suggested patch.

NETaa15222: VERSION patch for standard extensions
From: Paul Marquess
Files patched: ext/DB_File/Makefile.PL ext/DynaLoader/DynaLoader.pm ext/DynaLoader/Makefile.PL ext/Fcntl/Fcntl.pm ext/Fcntl/Makefile.PL ext/GDBM_File/GDBM_File.pm ext/GDBM_File/Makefile.PL ext/NDBM_File/Makefile.PL ext/NDBM_File/NDBM_File.pm ext/ODBM_File/Makefile.PL ext/ODBM_File/ODBM_File.pm ext/POSIX/Makefile.PL ext/POSIX/POSIX.pm ext/SDBM_File/Makefile.PL ext/SDBM_File/SDBM_File.pm ext/Safe/Makefile.PL ext/Safe/Safe.pm ext/Socket/Makefile.PL
 Applied suggested patch.

NETaa15222: VERSION patch for standard extensions (reprise)
Files patched: ext/DB_File/DB_File.pm ext/DynaLoader/DynaLoader.pm ext/Fcntl/Fcntl.pm ext/GDBM_File/GDBM_File.pm ext/NDBM_File/NDBM_File.pm ext/ODBM_File/ODBM_File.pm ext/POSIX/POSIX.pm ext/SDBM_File/SDBM_File.pm ext/Safe/Safe.pm ext/Socket/Socket.pm
 (same)

NETaa15227: $i < 10000 should optimize to integer op
From: Larry Wall
Files patched: op.c op.c
 The program

     for ($i = 0; $i < 100000; $i++) {
     push @foo, $i;
     }

 takes about one quarter the memory if the optimizer decides that it can
 use an integer < comparison rather than floating point.  It now does so
 if one side is an integer constant and the other side a simple variable.
 This should really help some of our benchmarks.  You can still force a
 floating point comparison by using 100000.0 instead.

NETaa15228: CPerl-mode patch
From: Ilya Zakharevich
Files patched: emacs/cperl-mode.el
 Applied suggested patch.

NETaa15231: Symbol::qualify()
From: Chip Salzenberg
Files patched: ext/FileHandle/FileHandle.pm gv.c lib/SelectSaver.pm lib/Symbol.pm pp_hot.c
 Applied suggested patch.

NETaa15236: select select broke under use strict
From: Chip Salzenberg
Files patched: op.c
 Instead of inventing a new bit, I just turned off the HINT_STRICT_REFS bit.
 I don't think it's worthwhile distinguishing between qualified or unqualified
 names to select.

NETaa15237: use vars
From: Larry Wall
Files patched: MANIFEST gv.c lib/subs.pm lib/vars.pm sv.c

NETaa15240: keep op names _and_ descriptions
From: Chip Salzenberg
Files patched: doio.c embed.h ext/Safe/Safe.pm ext/Safe/Safe.xs global.sym op.c opcode.h opcode.pl scope.c sv.c
 Applied suggested patch.

NETaa15259: study doesn't unset on string modification
From: Larry Wall
Files patched: mg.c pp.c
 Piggybacked on m//g unset magic to unset the study too.

NETaa15276: pick a better initial cxstack_max
From: Chip Salzenberg
Files patched: perl.c
 Added fudge in, and made it calculate how many it could fit into (most of) 8K,
 to avoid getting 16K of Kingsley malloc.

NETaa15287: numeric comparison optimization adjustments
From: Clark Cooper
Files patched: op.c
 Applied patch suggested by Chip, with liberalization to >= and <=.

NETaa15299: couldn't eval string containing pod or __DATA__
From: Andreas Koenig
Also: Gisle Aas
Files patched: toke.c
 Basically, eval didn't know how to bypass pods correctly.

NETaa15300: sv_backoff problems
From: Paul Marquess
Also: mtr
Also: Chip Salzenberg
Files patched: op.c sv.c sv.h
 Applied suggested patch.

NETaa15312: Avoid fclose(NULL)
From: Chip Salzenberg
Files patched: toke.c
 Applied suggested patch.

NETaa15318: didn't set up perl_init_i18nl14n for export
From: Ilya Zakharevich
Files patched: perl_exp.SH
 Applied suggested patch.

NETaa15331: File::Path::rmtree followed symlinks
From: Andreas Koenig
Files patched: lib/File/Path.pm
 Added suggested patch, except I did

        if (not -l $root and -d _) {

 for efficiency, since if -d is true, the -l already called lstat on it.

NETaa15339: sv_gets() didn't reset count
From: [e-mail]
Files patched: sv.c
 Applied suggested patch.

NETaa15341: differentiated importation of different types
From: Chip Salzenberg
Files patched: gv.c gv.h op.c perl.c pp.c pp_ctl.c sv.c sv.h toke.c
 Applied suggested patch.

NETaa15342: Consistent handling of e_{fp,tmpname}
From: Chip Salzenberg
Files patched: perl.c pp_ctl.c util.c
 Applied suggested patch.

NETaa15344: Safe gets confused about malloc on AIX
From: Tim Bunce
Files patched: ext/Safe/Safe.xs
 Applied suggested patch.

NETaa15348: -M upgrade
From: Tim Bunce
Files patched: perl.c pod/perlrun.pod
 Applied suggested patch.

NETaa15369: change in split optimization broke scalar context
From: Ulrich Pfeifer
Files patched: op.c
 The earlier patch to make the split optimization pay attention to
 OPpASSIGN_COMMON rearranged how the syntax tree is constructed, but kept
 the wrong context flags.  This causes pp_split() do do the wrong thing.

NETaa15423: can't do subversion numbering because of %5.3f assumptions
From: Andy Dougherty
Files patched: configpm patchlevel.h perl.c perl.h pp_ctl.c
 Removed the %5.3f assumptions where appropriate.  patchlevel.h now
 defines SUBVERSION, which if greater than 0 indicates a development version.

NETaa15424: Sigsetjmp patch
From: Kenneth Albanowski
Files patched: Configure config_h.SH op.c perl.c perl.h pp_ctl.c util.c
 Applied suggested patch.

Needed to make install paths absolute.
Files patched: installperl

h2xs 1.14
Files patched: utils/h2xs.PL

makedir() looped on a symlink to a directory.
Files patched: installperl

xsubpp 1.932
Files patched: lib/ExtUtils/xsubpp

-------------
Version 5.001
-------------

Nearly all the changes for 5.001 were bug fixes of one variety or another,
so here's the bug list, along with the "resolution" for each of them.  If
you wish to correspond about any of them, please include the bug number.

There were a few that can be construed as enhancements:
    NETaa13059: now warns of use of \1 where $1 is necessary.
    NETaa13512: added $SIG{__WARN__} and $SIG{__DIE__} hooks
    NETaa13520: added closures
    NETaa13530: scalar keys now resets hash iterator
    NETaa13641: added Tim's fancy new import whizbangers
    NETaa13710: cryptswitch needed to be more "useable"
    NETaa13716: Carp now allows multiple packages to be skipped out of
    NETaa13716: now counts imported routines as "defined" for redef warnings
    (and, of course, much of the stuff from the perl5-porters)

NETaa12974: README incorrectly said it was a pre-release.
Files patched: README

NETaa13033: goto pushed a bogus scope on the context stack.
From: Steve Vinoski
Files patched: pp_ctl.c
 The goto operator pushed an extra bogus scope onto the context stack.  (This
 often didn't matter, since many things pop extra unrecognized scopes off.)

NETaa13034: tried to get valid pointer from undef.
From: Castor Fu
Also:  Achille Hui, the Day Dreamer
Also: Eric Arnold
Files patched: pp_sys.c
 Now treats undef specially, and calls SvPV_force on any non-numeric scalar
 value to get a real pointer to somewhere.

NETaa13035: included package info with filehandles.
From: Jack Shirazi - BIU
Files patched: pp_hot.c pp_sys.c
 Now passes a glob to filehandle methods to keep the package info intact.

NETaa13048: didn't give strict vars message on every occurrence.
From: Doug Campbell
Files patched: gv.c
 It now complains about every occurrence.  (The bug resulted from an
 ill-conceived attempt to suppress a duplicate error message in a
 suboptimal fashion.)

NETaa13052: test for numeric sort sub return value fooled by taint magic.
From: Peter Jaspers-Fayer
Files patched: pp_ctl.c sv.h
 The test to see if the sort sub return value was numeric looked at the
 public flags rather than the private flags of the SV, so taint magic
 hid that info from the sort.

NETaa13053: forced a2p to use byacc
From: Andy Dougherty
Files patched: MANIFEST x2p/Makefile.SH x2p/a2p.c
 a2p.c is now pre-byacced and shipped with the kit.

NETaa13055: misnamed constant in previous patch.
From: Conrad Augustin
Files patched: op.c op.h toke.c
 The tokener translates $[ to a constant, but with a special marking in case
 the constant gets assigned to or localized.  Unfortunately, the marking
 was done with a combination of OPf_SPECIAL and OPf_MOD that was easily
 spoofed.  There is now a private OPpCONST_ARYLEN flag for this purpose.

NETaa13055: use of OPf_SPECIAL for $[ lvaluehood was too fragile.
Files patched: op.c op.h toke.c
 (same)

NETaa13056: convert needs to throw away any number info on its list.
From: Jack Shirazi - BIU
Files patched: op.c
 The listiness of the argument list leaked out to the subroutine call because
 of how prepend_elem and append_elem reuse an existing list.  The convert()
 routine just needs to discard any listiness it finds on its argument.

NETaa13058: AUTOLOAD shouldn't assume size of @_ is meaningful.
From: Florent Guillaume
Files patched: ext/DB_File/DB_File.pm ext/Fcntl/Fcntl.pm ext/GDBM_File/GDBM_File.pm ext/Socket/Socket.pm h2xs.SH
 I just deleted the optimization, which is silly anyway since the eventual
 subroutine definition is cached.

NETaa13059: now warns of use of \1 where $1 is necessary.
From: Gustaf Neumann
Files patched: toke.c
 Now says

     Can't use \1 to mean $1 in expression at foo line 2

 along with an explanation in perldiag.

NETaa13060: no longer warns on attempt to read <> operator's transition state.
From: Chaim Frenkel
Files patched: pp_hot.c
 No longer warns on <> operator's transitional state.

NETaa13140: warning said $ when @ would be more appropriate.
From: David J. MacKenzie
Files patched: op.c pod/perldiag.pod
 Now says

     (Did you mean $ or @ instead of %?)

 and added more explanation to perldiag.

NETaa13149: was reading freed memory to make incorrect error message.
Files patched: pp_ctl.c
 It was reading freed memory to make an error message that would be
 incorrect in any event because it had the inner filename rather than
 the outer.

NETaa13149: confess was sometimes less informative than croak
From: Jack Shirazi
Files patched: lib/Carp.pm
 (same)

NETaa13150: stderr needs to be STDERR in package
From: Jack Shirazi
Files patched: lib/File/CheckTree.pm
 Also fixed pl2pm to translate the filehandles to uppercase.

NETaa13150: uppercases stdin, stdout and stderr
Files patched: pl2pm
 (same)

NETaa13154: array assignment didn't notice package magic.
From: Brian Reichert
Files patched: pp_hot.c
 The list assignment operator looked for only set magic, but set magic is
 only on the elements of a magical hash, not on the hash as a whole.  I made
 the operator look for any magic at all on the target array or hash.

NETaa13155: &DB::DB left trash on the stack.
From: Thomas Koenig
Files patched: lib/perl5db.pl pp_ctl.c
 The call by pp_dbstate() to &DB::DB left trash on the stack.  It now
 calls DB in list context, and DB returns ().

NETaa13156: lexical variables didn't show up in debugger evals.
From: Joergen Haegg
Files patched: op.c
 The code that searched back up the context stack for the lexical scope
 outside the eval only partially took into consideration that there
 might be extra debugger subroutine frames that shouldn't be used, and
 ended up comparing the wrong statement sequence number to the range of
 valid sequence numbers for the scope of the lexical variable.  (There
 was also a bug fixed in passing that caused the scope of lexical to go
 clear to the end of the subroutine even if it was within an inner block.)

NETaa13157: any request for autoloaded DESTROY should create a null one.
From: Tom Christiansen
Files patched: lib/AutoLoader.pm
 If DESTROY.al is not located, it now creates sub DESTROY {} automatically.

NETaa13158: now preserves $@ around destructors while leaving eval.
From: Tim Bunce
Files patched: pp_ctl.c
 Applied supplied patch, except the whole second hunk can be replaced with

     sv_insert(errsv, 0, 0, message, strlen(message));

NETaa13160: clarified behavior of split without arguments
From: Harry Edmon
Files patched: pod/perlfunc.pod
 Clarified the behavior of split without arguments.

NETaa13162: eval {} lost list/scalar context
From: Dov Grobgeld
Files patched: op.c
 LEAVETRY didn't propagate number to ENTERTRY.

NETaa13163: clarified documentation of foreach using my variable
From: Tom Christiansen
Files patched: pod/perlsyn.pod
 Explained that foreach using a lexical is still localized.

NETaa13164: the dot detector for the end of formats was over-rambunctious.
From: John Stoffel
Files patched: toke.c
 The dot detector for the end of formats was over-rambunctious.  It would
 pick up any dot that didn't have a space in front of it.

NETaa13165: do {} while 1 never linked outer block into next chain.
From: Gisle Aas
Files patched: op.c
 When the conditional of do {} while 1; was optimized away, it confused the
 postfix order construction so that the block that ordinarily sits around the
 whole loop was never executed.  So when the loop tried to unstack between
 iterations, it got the wrong context, and blew away the lexical variables
 of the outer scope.  Fixed it by introducing a NULL opcode that will be
 optimized away later.

NETaa13167: coercion was looking at public bits rather than private bits.
From: Randal L. Schwartz
Also: Thomas Riechmann
Also: Shane Castle
Files patched: sv.c
 There were some bad ifdefs around the various varieties of set*id().  In
 addition, tainting was interacting badly with assignment to $> because
 sv_2iv() was examining SvPOK rather than SvPOKp, and so couldn't coerce
 a string uid to an integer one.

NETaa13167: had some ifdefs wrong on set*id.
Files patched: mg.c pp_hot.c
 (same)

NETaa13168: relaxed test for comparison of new and old fds
From: Casper H.S. Dik
Files patched: t/lib/posix.t
 I relaxed the comparison to just check that the new fd is greater.

NETaa13169: autoincrement can corrupt scalar value state.
From: Gisle Aas
Also: Tom Christiansen
Files patched: sv.c
 It assumed a PV didn't need to be upgraded to become an NV.

NETaa13169: previous patch could leak a string pointer.
Files patched: sv.c
 (same)

NETaa13170: symbols missing from global.sym
From: Tim Bunce
Files patched: global.sym
 Applied suggested patch.

NETaa13171: \\ in <<'END' shouldn't reduce to \.
From: Randal L. Schwartz
Files patched: toke.c
 <<'END' needed to bypass ordinary single-quote processing.

NETaa13172: 'use integer' turned off magical autoincrement.
From: Erich Rickheit KSC
Files patched: pp.c pp_hot.c
 The integer versions of the increment and decrement operators were trying too
 hard to be efficient.

NETaa13172: deleted duplicate increment and decrement code
Files patched: opcode.h opcode.pl pp.c
 (same)

NETaa13173: install should make shared libraries executable.
From: Brian Grossman
Also: Dave Nadler
Also: Eero Pajarre
Files patched: installperl
 Now gives permission 555 to any file ending with extension specified by $dlext.

NETaa13176: ck_rvconst didn't free the const it used up.
From: Nick Duffek
Files patched: op.c
 I checked in many random memory leaks under this bug number, since it
 was an eval that brought many of them out.

NETaa13176: didn't delete XRV for temp ref of destructor.
Files patched: sv.c
 (same)

NETaa13176: didn't delete op_pmshort in matching operators.
Files patched: op.c
 (same)

NETaa13176: eval leaked the name of the eval.
Files patched: scope.c
 (same)

NETaa13176: gp_free didn't free the format.
Files patched: gv.c
 (same)

NETaa13176: minor leaks in loop exits and constant subscript optimization.
Files patched: op.c
 (same)

NETaa13176: plugged some duplicate struct allocation memory leaks.
Files patched: perl.c
 (same)

NETaa13176: sv_clear of an FM didn't clear anything.
Files patched: sv.c
 (same)

NETaa13176: tr/// didn't mortalize its return value.
Files patched: pp.c
 (same)

NETaa13177: SCOPE optimization hid line number info
From: David J. MacKenzie
Also: Hallvard B Furuseth
Files patched: op.c
 Every pass on the syntax tree has to keep track of the current statement.
 Unfortunately, the single-statement block was optimized into a single
 statement between the time the variable was parsed and the time the
 void code scan was done, so that pass didn't see the OP_NEXTSTATE
 operator, because it has been optimized to an OP_NULL.

 Fortunately, null operands remember what they were, so it was pretty easy
 to make it set the correct line number anyway.

NETaa13178: some linux doesn't handle nm well
From: Alan Modra
Files patched: hints/linux.sh
 Applied supplied patch.

NETaa13180: localized slice now pre-extends array
From: Larry Schuler
Files patched: pp.c
 A localized slice now pre-extends its array to avoid reallocation during
 the scope of the local.

NETaa13181: m//g didn't keep track of whether previous match matched null.
From: "philippe.verdret"
Files patched: mg.h pp_hot.c
 A pattern isn't allowed to match a null string in the same place twice in
 a row.  m//g wasn't keeping track of whether the previous match matched
 the null string.

NETaa13182: now includes whitespace as a regexp metacharacter.
From: Larry Wall
Files patched: toke.c
 scan_const() now counts " \t\n\r\f\v" as metacharacters when scanning a pattern.

NETaa13183: sv_setsv shouldn't try to clone an object.
From: Peter Gordon
Files patched: sv.c
 The sv_mortalcopy() done by the return in STORE called sv_setsv(),
 which cloned the object.  sv_setsv() shouldn't be in the business of
 cloning objects.

NETaa13184: bogus warning on quoted signal handler name removed.
From: Dan Carson
Files patched: toke.c
 Now doesn't complain unless the first non-whitespace character after the =
 is an alphabetic character.

NETaa13186: now croaks on chop($')
From: Casper H.S. Dik
Files patched: doop.c
 Now croaks on chop($') and such.

NETaa13187: "${foo::bar}" now counts as mere delimitation, not as a bareword.
From: Jay Rogers
Files patched: toke.c
 "${foo::bar}" now counts as mere delimitation, not as a bareword inside a
 reference block.

NETaa13188: for backward compatibility, looks for "perl -" before "perl".
From: Russell Mosemann
Files patched: toke.c
 Now allows non-whitespace characters on the #! line between the "perl"
 and the "-".

NETaa13188: now allows non-whitespace after #!...perl before switches.
Files patched: toke.c
 (same)

NETaa13189: derivative files need to be removed before recreation
From: Simon Leinen
Also: Dick Middleton
Also: David J. MacKenzie
Files patched: embed_h.sh x2p/Makefile.SH
 Fixed various little nits as suggested in several messages.

NETaa13190: certain assignments can spoof pod directive recognizer
From: Ilya Zakharevich
Files patched: toke.c
 The lexer now only recognizes pod directives where a statement is expected.

NETaa13194: now returns undef when there is no curpm.
From: [e-mail]
Files patched: mg.c
 Since there was no regexp prior to the "use", it was returning whatever the
 last successful match was within the "use", because there was no current
 regexp, so it treated it as a normal variable.  It now returns undef.

NETaa13195: semop had one S too many.
From: Joachim Huober
Files patched: opcode.pl
 The entry in opcode.pl had one too many S's.

NETaa13196: always assumes it's a Perl script if -c is used.
From: Dan Carson
Files patched: toke.c
 It now will assume it's a Perl script if the -c switch is used.

NETaa13197: changed implicit -> message to be more understandable.
From: Bruce Barnett
Files patched: op.c pod/perldiag.pod
 I changed the error message to be more understandable.  It now says

     Can't use subscript on sort...


NETaa13201: added OPpCONST_ENTERED flag to properly enter filehandle symbols.
From: E. Jay Berkenbilt
Also: Tom Christiansen
Files patched: op.c op.h toke.c
 The grammatical reduction of a print statement didn't properly count
 the filehandle as a symbol reference because it couldn't distinguish
 between a symbol entered earlier in the program and a symbol entered
 for the first time down in the lexer.

NETaa13203: README shouldn't mention uperl.o any more.
From: Anno Siegel
Files patched: README

NETaa13204: .= shouldn't warn on uninitialized target.
From: Pete Peterson
Files patched: pp_hot.c
 No longer warns on uninitialized target of .= operator.

NETaa13206: handy macros in XSUB.h
From: Tim Bunce
Files patched: XSUB.h
 Added suggested macros.

NETaa13228: commonality checker didn't treat lexicals as variables.
From: [e-mail]
Files patched: op.c opcode.pl
 The list assignment operator tries to avoid unnecessary copies by doing the
 assignment directly if there are no common variables on either side of the
 equals.  Unfortunately, the code that decided that only recognized references
 to dynamic variables, not lexical variables.

NETaa13229: fixed sign stuff for complement, integer coercion.
From: Larry Wall
Files patched: perl.h pp.c sv.c
 Fixed ~0 and integer coercions.

NETaa13230: no longer tries to reuse scratchpad temps if tainting in effect.
From: Luca Fini
Files patched: op.c
 I haven't reproduced it, but I believe the problem is the reuse of scratchpad
 temporaries between statements.  I've made it not try to reuse them if
 tainting is in effect.

NETaa13231: *foo = *bar now prevents typo warnings on "foo"
From: Robin Barker
Files patched: sv.c
 Aliasing of the form *foo = *bar is now protected from the typo warnings.
 Previously only the *foo = \$bar form was.

NETaa13235: require BAREWORD now introduces package name immediately.
From: Larry Wall
Files patched: toke.c
 require BAREWORD now introduces package name immediately.  This lets the
 method intuit code work right even though the require hasn't actually run
 yet.

NETaa13289: didn't calculate correctly using arybase.
From: Jared Rhine
Files patched: pp.c pp_hot.c
 The runtime code didn't use curcop->cop_arybase correctly.

NETaa13301: store now throws exception on error
From: Barry Friedman
Files patched: ext/GDBM_File/GDBM_File.xs ext/NDBM_File/NDBM_File.xs ext/ODBM_File/ODBM_File.xs ext/SDBM_File/SDBM_File.xs
 Changed warn to croak in ext/*DBM_File/*.xs.

NETaa13302: ctime now takes Time_t rather than Time_t*.
From: Rodger Anderson
Files patched: ext/POSIX/POSIX.xs
 Now declares a Time_t and takes the address of that in CODE.

NETaa13302: shorter way to do this patch
Files patched: ext/POSIX/POSIX.xs
 (same)

NETaa13304: could feed too large $@ back into croak, whereupon it croaked.
From: Larry Wall
Files patched: perl.c
 callist() could feed $@ back into croak with more than a bare %s.  (croak()
 handles long strings with a bare %s okay.)

NETaa13305: compiler misoptimized RHS to outside of s/a/print/e
From: Brian S. Cashman <[e-mail]>
Files patched: op.c
 The syntax tree was being misconstructed because the compiler felt that
 the RHS was invariant, so it did it outside the s///.

NETaa13314: assigning mortal to lexical leaks
From: Larry Wall
Files patched: sv.c
 In stealing strings, sv_setsv was checking SvPOK to see if it should free
 the destination string.  It should have been checking SvPVX.

NETaa13316: wait4pid now recalled when errno == EINTR
From: Robert J. Pankratz
Files patched: pp_sys.c util.c
 system() and the close() of a piped open now recall wait4pid if it returned
 prematurely with errno == EINTR.

NETaa13329: needed to localize taint magic
From: Brian Katzung
Files patched: sv.c doio.c mg.c pp_hot.c pp_sys.c scope.c taint.c
 Taint magic is now localized better, though I had to resort to a kludge
 to allow a value to be both tainted and untainted simultaneously during
 the assignment of

     local $foo = $_[0];

 when $_[0] is a reference to the variable $foo already.

NETaa13341: clarified interaction of AnyDBM_File::ISA and "use"
From: Ian Phillipps
Files patched: pod/modpods/AnyDBMFile.pod
 The doc was misleading.

NETaa13342: grep and map with block would enter block but never leave it.
From: Ian Phillipps
Files patched: op.c
 The compiler use some sort-checking code to handle the arguments of
 grep and map.  Unfortunately, this wiped out the block exit opcode while
 leaving the block entry opcode.  This doesn't matter to sort, but did
 matter to grep and map.  It now leave the block entry intact.

 The reason it worked without the my is because the block entry and exit
 were optimized away to an OP_SCOPE, which it doesn't matter if it's there
 or not.

NETaa13343: goto needed to longjmp when in a signal handler.
From: Robert Partington
Files patched: pp_ctl.c
 goto needed to longjmp() when in a signal handler to get back into the
 right run() context.


NETaa13344: strict vars shouldn't apply to globs or filehandles.
From: Andrew Wilcox
Files patched: gv.c
 Filehandles and globs will be excepted from "strict vars", so that you can
 do the standard Perl 4 trick of

     use strict;
     sub foo {
         local(*IN);
         open(IN,"file");
     }


NETaa13345: assert.pl didn't use package DB
From: Hans Mulder
Files patched: lib/assert.pl
 Now it does.

NETaa13348: av_undef didn't free scalar representing $#foo.
From: David Filo
Files patched: av.c
 av_undef didn't free scalar representing $#foo.

NETaa13349: sort sub accumulated save stack entries
From: David Filo
Files patched: pp_ctl.c
 COMMON only gets set if assigning to @_, which is reasonable.  Most of the
 problem was a memory leak.

NETaa13351: didn't treat indirect filehandles as references.
From: Andy Dougherty
Files patched: op.c
 Now produces

 Can't use an undefined value as a symbol reference at ./foo line 3.


NETaa13352: OP_SCOPE allocated as UNOP rather than LISTOP.
From: Andy Dougherty
Files patched: op.c

NETaa13353: scope() didn't release filegv on OP_SCOPE optimization.
From: Larry Wall
Files patched: op.c
 When scope() nulled out a NEXTSTATE, it didn't release its filegv reference.

NETaa13355: hv_delete now avoids useless mortalcopy
From: Larry Wall
Files patched: hv.c op.c pp.c pp_ctl.c proto.h scope.c util.c
 hv_delete now avoids useless mortalcopy.


NETaa13359: comma operator section missing its heading
From: Larry Wall
Files patched: pod/perlop.pod

NETaa13359: random typo
Files patched: pod/perldiag.pod

NETaa13360: code to handle partial vec values was bogus.
From: Conrad Augustin
Files patched: pp.c
 The code that Mark J. added a long time ago to handle values that were partially
 off the end of the string was incorrect.

NETaa13361: made it not interpolate inside regexp comments
From: Martin Jost
Files patched: toke.c
 To avoid surprising people, it no longer interpolates inside regexp
 comments.

NETaa13362: ${q[1]} should be interpreted like it used to
From: Hans Mulder
Files patched: toke.c
 Now resolves ${keyword[1]} to $keyword[1] and warns if -w.  Likewise for {}.

NETaa13363: meaning of repeated search chars undocumented in tr///
From: Stephen P. Potter
Files patched: pod/perlop.pod
 Documented that repeated characters use the first translation given.

NETaa13365: if closedir fails, don't try it again.
From: Frank Crawford
Files patched: pp_sys.c
 Now does not attempt to closedir a second time.

NETaa13366: can't do block scope optimization on $1 et al when tainting.
From: Andrew Vignaux
Files patched: toke.c
 The tainting mechanism assumes that every statement starts out
 untainted.  Unfortunately, the scope removal optimization for very
 short blocks removed the statementhood of statements that were
 attempting to read $1 as an untainted value, with the effect that $1
 appeared to be tainted anyway.  The optimization is now disabled when
 tainting and the block contains $1 (or equivalent).

NETaa13366: fixed this a better way in toke.c.
Files patched: op.c
 (same)

NETaa13366: need to disable scope optimization when tainting.
Files patched: op.c
 (same)

NETaa13367: Did a SvCUR_set without nulling out final char.
From: "Rob Henderson" <[e-mail]>
Files patched: doop.c pp.c pp_sys.c
 When do_vop set the length on its result string it neglected to null-terminate
 it.

NETaa13368: bigrat::norm sometimes chucked sign
From: Greg Kuperberg
Files patched: lib/bigrat.pl
 The normalization routine was assuming that the gcd of two numbers was
 never negative, and based on that assumption managed to move the sign
 to the denominator, where it was deleted on the assumption that the
 denominator is always positive.

NETaa13368: botched previous patch
Files patched: lib/bigrat.pl
 (same)

NETaa13369: # is now a comment character, and \# should be left for regcomp.
From: Simon Parsons
Files patched: toke.c
 It was not skipping the comment when it skipped the white space, and constructed
 an opcode that tried to match a null string.  Unfortunately, the previous
 star tried to use the first character of the null string to optimize where
 to recurse, so it never matched.

NETaa13369: comment after regexp quantifier induced non-match.
Files patched: regcomp.c
 (same)

NETaa13370: some code assumed SvCUR was of type int.
From: Spider Boardman
Files patched: pp_sys.c
 Did something similar to the proposed patch.  I also fixed the problem that
 it assumed the type of SvCUR was int.  And fixed get{peer,sock}name the
 same way.

NETaa13375: sometimes dontbother wasn't added back into strend.
From: Jamshid Afshar
Files patched: regexec.c
 When the /g modifier was used, the regular expression code would calculate
 the end of $' too short by the minimum number of characters the pattern could
 match.

NETaa13375: sv_setpvn now disallows negative length.
Files patched: sv.c
 (same)

NETaa13376: suspected indirect objecthood prevented recognition of lexical.
From: [e-mail]
Files patched: toke.c
 When $data[0] is used in a spot that might be an indirect object, the lexer
 was getting confused over the rule that says the $data in $$data[0] isn't
 an array element.  (The lexer uses XREF state for both indirect objects
 and for variables used as names.)

NETaa13377: -I processesing ate remainder of #! line.
From: Darrell Schiebel
Files patched: perl.c
 I made the -I processing in moreswitches look for the end of the string,
 delimited by whitespace.

NETaa13379: ${foo} now treated the same outside quotes as inside
From: Hans Mulder
Files patched: toke.c
 ${bareword} is now treated the same outside quotes as inside.

NETaa13379: previous fix for this bug was botched
Files patched: toke.c
 (same)

NETaa13381: TEST should check for perl link
From: Andy Dougherty
Files patched: t/TEST
 die "You need to run \"make test\" first to set things up.\n" unless -e 'perl';


NETaa13384: fixed version 0.000 botch.
From: Larry Wall
Files patched: installperl

NETaa13385: return 0 from required file loses message
From: Malcolm Beattie
Files patched: pp_ctl.c
 Works right now.

NETaa13387: added pod2latex
From: Taro KAWAGISHI
Files patched: MANIFEST pod/pod2latex
 Added most recent copy to pod directory.

NETaa13388: constant folding now prefers integer results over double
From: Ilya Zakharevich
Files patched: op.c
 Constant folding now prefers integer results over double.

NETaa13389: now treats . and exec as shell metathingies
From: Hans Mulder
Files patched: doio.c
 Now treats . and exec as shell metathingies.

NETaa13395: eval didn't check taintedness.
From: Larry Wall
Files patched: pp_ctl.c

NETaa13396: $^ coredumps at end of string
From: Paul Rogers
Files patched: toke.c
 The scan_ident() didn't check for a null following $^.

NETaa13397: improved error messages when operator expected
From: Larry Wall
Files patched: toke.c
 Added message (Do you need to predeclare BAR?).  Also fixed the missing
 semicolon message.

NETaa13399: cleanup by Andy
From: Larry Wall
Files patched: Changes Configure Makefile.SH README cflags.SH config.H config_h.SH deb.c doop.c dump.c ext/DB_File/DB_File.pm ext/DB_File/DB_File.xs ext/DynaLoader/DynaLoader.pm ext/Fcntl/Fcntl.pm ext/GDBM_File/GDBM_File.pm ext/POSIX/POSIX.pm ext/SDBM_File/sdbm/sdbm.h ext/Socket/Socket.pm ext/util/make_ext h2xs.SH hints/aix.sh hints/bsd386.sh hints/dec_osf.sh hints/esix4.sh hints/freebsd.sh hints/irix_5.sh hints/next_3_2.sh hints/sunos_4_1.sh hints/svr4.sh hints/ultrix_4.sh installperl lib/AutoSplit.pm lib/Cwd.pm lib/ExtUtils/MakeMaker.pm lib/ExtUtils/xsubpp lib/Term/Cap.pm mg.c miniperlmain.c perl.c perl.h perl_exp.SH pod/Makefile pod/perldiag.pod pod/pod2html pp.c pp_ctl.c pp_hot.c pp_sys.c proto.h sv.h t/re_tests util.c x2p/Makefile.SH x2p/a2p.h x2p/a2py.c x2p/handy.h x2p/hash.c x2p/hash.h x2p/str.c x2p/str.h x2p/util.c x2p/util.h x2p/walk.c

NETaa13399: cleanup from Andy
Files patched: MANIFEST

NETaa13399: configuration cleanup
Files patched: Configure Configure MANIFEST MANIFEST Makefile.SH Makefile.SH README config.H config.H config_h.SH config_h.SH configpm ext/DynaLoader/DynaLoader.pm ext/DynaLoader/dl_hpux.xs ext/NDBM_File/Makefile.PL ext/ODBM_File/Makefile.PL ext/util/make_ext handy.h hints/aix.sh hints/hpux_9.sh hints/hpux_9.sh hints/irix_4.sh hints/linux.sh hints/mpeix.sh hints/next_3_2.sh hints/solaris_2.sh hints/svr4.sh installperl installperl lib/AutoSplit.pm lib/ExtUtils/MakeMaker.pm lib/ExtUtils/MakeMaker.pm lib/ExtUtils/xsubpp lib/Getopt/Long.pm lib/Text/Tabs.pm makedepend.SH makedepend.SH mg.c op.c perl.h perl_exp.SH pod/perl.pod pod/perldiag.pod pod/perlsyn.pod pod/pod2man pp_sys.c proto.h proto.h unixish.h util.c util.c vms/config.vms writemain.SH x2p/a2p.h x2p/a2p.h x2p/a2py.c x2p/a2py.c x2p/handy.h x2p/util.c x2p/walk.c x2p/walk.c

NETaa13399: new files from Andy
Files patched: ext/DB_File/Makefile.PL ext/DynaLoader/Makefile.PL ext/Fcntl/Makefile.PL ext/GDBM_File/Makefile.PL ext/NDBM_File/Makefile.PL ext/ODBM_File/Makefile.PL ext/POSIX/Makefile.PL ext/SDBM_File/Makefile.PL ext/SDBM_File/sdbm/Makefile.PL ext/Socket/Makefile.PL globals.c hints/convexos.sh hints/irix_6.sh

NETaa13399: patch0l from Andy
Files patched: Configure MANIFEST Makefile.SH config.H config_h.SH ext/DB_File/Makefile.PL ext/GDBM_File/Makefile.PL ext/NDBM_File/Makefile.PL ext/POSIX/POSIX.xs ext/SDBM_File/sdbm/Makefile.PL ext/util/make_ext h2xs.SH hints/next_3_2.sh hints/solaris_2.sh hints/unicos.sh installperl lib/Cwd.pm lib/ExtUtils/MakeMaker.pm makeaperl.SH vms/config.vms x2p/util.c x2p/util.h

NETaa13399: stuff from Andy
Files patched: Configure MANIFEST Makefile.SH configpm hints/dec_osf.sh hints/linux.sh hints/machten.sh lib/ExtUtils/MakeMaker.pm util.c

NETaa13399: Patch 0k from Andy
Files patched: Configure MANIFEST Makefile.SH config.H config_h.SH hints/dec_osf.sh hints/mpeix.sh hints/next_3_0.sh hints/ultrix_4.sh installperl lib/ExtUtils/MakeMaker.pm lib/File/Path.pm makeaperl.SH minimod.PL perl.c proto.h vms/config.vms vms/ext/MM_VMS.pm x2p/a2p.h

NETaa13399: Patch 0m from Andy
Files patched: Configure MANIFEST Makefile.SH README config.H config_h.SH ext/DynaLoader/README ext/POSIX/POSIX.xs ext/SDBM_File/sdbm/sdbm.h ext/util/extliblist hints/cxux.sh hints/linux.sh hints/powerunix.sh lib/ExtUtils/MakeMaker.pm malloc.c perl.h pp_sys.c util.c

NETaa13400: pod2html update from Bill Middleton
From: Larry Wall
Files patched: pod/pod2html

NETaa13401: Boyer-Moore code attempts to compile string longer than 255.
From: Kyriakos Georgiou
Files patched: util.c
 The Boyer-Moore table uses unsigned char offsets, but the BM compiler wasn't
 rejecting strings longer than 255 chars, and was miscompiling them.

NETaa13403: missing a $ on variable name
From: Wayne Scott
Files patched: installperl
 Yup, it was missing.

NETaa13406: didn't wipe out dead match when proceeding to next BRANCH
From: Michael P. Clemens
Files patched: regexec.c
 The code to check alternatives didn't invalidate backreferences matched by the
 failed branch.

NETaa13407: overload upgrade
From: [e-mail]
Also: Ilya Zakharevich
Files patched: MANIFEST gv.c lib/Math/BigInt.pm perl.h pod/perlovl.pod pp.c pp.h pp_hot.c sv.c t/lib/bigintpm.t t/op/overload.t
 Applied supplied patch, and fixed bug induced by use of sv_setsv to do
 a deep copy, since sv_setsv no longer copies objecthood.

NETaa13409: sv_gets tries to grow string at EOF
From: Harold O Morris
Files patched: sv.c
 Applied suggested patch, only two statements earlier, since the end code
 also does SvCUR_set.

NETaa13410: delaymagic did =~ instead of &= ~
From: Andreas Schwab
Files patched: pp_hot.c
 Applied supplied patch.

NETaa13411: POSIX didn't compile under -DLEAKTEST
From: Frederic Chauveau
Files patched: ext/POSIX/POSIX.xs
 Used NEWSV instead of newSV.

NETaa13412: new version from Tony Sanders
From: Tony Sanders
Files patched: lib/Term/Cap.pm
 Installed as Term::Cap.pm

NETaa13413: regmust extractor needed to restart loop on BRANCH for (?:) to work
From: DESARMENIEN
Files patched: regcomp.c
 The BRANCH skipper should have restarted the loop from the top.

NETaa13414: the check for accidental list context was done after pm_short check
From: Michael H. Coen
Files patched: pp_hot.c
 Moved check for accidental list context to before the pm_short optimization.

NETaa13418: perlre.pod babbled nonsense about | in character classes
From: Philip Hazel
Files patched: pod/perlre.pod
 Removed bogus brackets.  Now reads:
     Note however that "|" is interpreted as a literal with square brackets,
     so if you write C<[fee|fie|foe]> you're really only matching C<[feio|]>.

NETaa13419: need to document introduction of lexical variables
From: "Heading, Anthony"
Files patched: pod/perlfunc.pod
 Now mentions that lexicals aren't introduced till after the current statement.

NETaa13420: formats that overflowed a page caused endless top of forms
From: [e-mail]
Files patched: pp_sys.c
 If a record is too large to fit on a page, it now prints whatever will
 fit and then calls top of form again on the remainder.

NETaa13423: the code to do negative list subscript in scalar context was missing
From: Steve McDougall
Files patched: pp.c
 The negative subscript code worked right in list context but not in scalar
 context.  In fact, there wasn't code to do it in the scalar context.

NETaa13424: existing but undefined CV blocked inheritance
From: Spider Boardman
Files patched: gv.c
 Applied supplied patch.

NETaa13425: removed extra argument to croak
From: "R. Bernstein"
Files patched: regcomp.c
 Removed extra argument.

NETaa13427: added return types
From: "R. Bernstein"
Files patched: x2p/a2py.c
 Applied suggested patch.

NETaa13427: added static declarations
Files patched: x2p/walk.c
 (same)

NETaa13428: split was assuming that all backreferences were defined
From: Dave Schweisguth
Files patched: pp.c
 split was assuming that all backreferences were defined.

NETaa13430: hoistmust wasn't hoisting anchored shortcircuit's length
From: Tom Christiansen
Also: Rob Hooft
Files patched: toke.c

NETaa13432: couldn't call code ref under debugger
From: Mike Fletcher
Files patched: op.c pp_hot.c sv.h
 The debugging code assumed it could remember a name to represent a subroutine,
 but anonymous subroutines don't have a name.  It now remembers a CV reference
 in that case.

NETaa13435: 1' dumped core
From: Larry Wall
Files patched: toke.c
 Didn't check a pointer for nullness.

NETaa13436: print foo(123) didn't treat foo as subroutine
From: [e-mail]
Files patched: toke.c
 Now treats it as a subroutine rather than a filehandle.

NETaa13437: &$::foo didn't think $::foo was a variable name
From: [e-mail]
Files patched: toke.c
 Now treats $::foo as a global variable.

NETaa13439: referred to old package name
From: Tom Christiansen
Files patched: lib/Sys/Syslog.pm
 Wasn't a strict refs problem after all.  It was simply referring to package
 syslog, which had been renamed to Sys::Syslog.

NETaa13440: stat operations didn't know what to do with glob or ref to glob
From: [e-mail]
Files patched: doio.c pp_sys.c
 Now knows about the kinds of filehandles returned by FileHandle constructors
 and such.

NETaa13442: couldn't find name of copy of deleted symbol table entry
From: Spider Boardman
Files patched: gv.c gv.h
 I did a much simpler fix.  When gp_free notices that it's freeing the
 master GV, it nulls out gp_egv.  The GvENAME and GvESTASH macros know
 to revert to gv if egv is null.

 This has the advantage of not creating a reference loop.

NETaa13443: couldn't override an XSUB
From: William Setzer
Files patched: op.c
 When the newSUB and newXS routines checked for whether the old sub was
 defined, they only looked at CvROOT(cv), not CvXSUB(cv).

NETaa13443: needed to do same thing in newXS
Files patched: op.c
 (same)

NETaa13444: -foo now doesn't warn unless sub foo is defined
From: Larry Wall
Files patched: toke.c
 Made it not warn on -foo, unless there is a sub foo defined.

NETaa13451: in scalar context, pp_entersub now guarantees one item from XSUB
From: Nick Gianniotis
Files patched: pp_hot.c
 The pp_entersub routine now guarantees that an XSUB in scalar context
 returns one and only one value.  If there are fewer, it pushes undef,
 and if there are more, it returns the last one.

NETaa13457: now explicitly disallows printf format with 'n' or '*'.
From: [e-mail]
Files patched: doop.c
 Now says

     Use of n in printf format not supported at ./foo line 3.


NETaa13458: needed to call SvPOK_only() in pp_substr
From: Wayne Scott
Files patched: pp.c
 Needed to call SvPOK_only() in pp_substr.

NETaa13459: umask and chmod now warn about missing initial 0 even with paren
From: Andreas Koenig
Files patched: toke.c
 Now skips parens as well as whitespace looking for argument.

NETaa13460: backtracking didn't work on .*? because reginput got clobbered
From: Andreas Koenig
Files patched: regexec.c
 When .*? did a probe of the rest of the string, it clobbered reginput,
 so the next call to match a . tried to match the newline and failed.

NETaa13475: \(@ary) now treats array as list of scalars
From: Tim Bunce
Files patched: op.c
 The mod() routine now refrains from marking @ary as an lvalue if it's in parens
 and is the subject of an OP_REFGEN.

NETaa13481: accept buffer wasn't aligned good enough
From: Holger Bechtold
Also: Christian Murphy
Files patched: pp_sys.c
 Applied suggested patch.

NETaa13486: while (<>) now means while (defined($_ = <>))
From: Jim Balter
Files patched: op.c pod/perlop.pod
 while (<HANDLE>) now means while (defined($_ = <HANDLE>)).

NETaa13500: needed DESTROY in FileHandle
From: Tim Bunce
Files patched: ext/POSIX/POSIX.pm
 Added DESTROY method.  Also fixed ungensym to use POSIX:: instead of _POSIX.
 Removed ungensym from close method, since DESTROY should do that now.

NETaa13502: now complains if you use local on a lexical variable
From: Larry Wall
Files patched: op.c
 Now says something like

     Can't localize lexical variable $var at ./try line 6.

NETaa13512: added $SIG{__WARN__} and $SIG{__DIE__} hooks
From: Larry Wall
Files patched: embed.h gv.c interp.sym mg.c perl.h pod/perlvar.pod pp_ctl.c util.c Todo pod/perldiag.pod

NETaa13514: statements before intro of lex var could see lex var
From: William Setzer
Files patched: op.c
 When a lexical variable is declared, introduction is delayed until
 the start of the next statement, so that any initialization code runs
 outside the scope of the new variable.  Thus,

     my $y = 3;
     my $y = $y;
     print $y;

 should print 3.  Unfortunately, the declaration was marked with the
 beginning location at the time that "my $y" was processed instead of
 when the variable was introduced, so any embedded statements within
 an anonymous subroutine picked up the wrong "my".  The declaration
 is now labelled correctly when the variable is actually introduced.

NETaa13520: added closures
From: Larry Wall
Files patched: Todo cv.h embed.h global.sym gv.c interp.sym op.c perl.c perl.h pod/perlform.pod pp.c pp_ctl.c pp_hot.c sv.c sv.h toke.c

NETaa13520: test to see if lexical works in a format now
Files patched: t/op/write.t

NETaa13522: substitution couldn't be used on a substr()
From: Hans Mulder
Files patched: pp_ctl.c pp_hot.c
 Changed pp_subst not to use sv_replace() anymore, which didn't handle lvalues
 and was overkill anyway.  Should be slightly faster this way too.

NETaa13525: G_EVAL mode in perl_call_sv didn't return values right.
Files patched: perl.c

NETaa13525: consolidated error message
From: Larry Wall
Files patched: perl.h toke.c

NETaa13525: derived it
Files patched: perly.h

NETaa13525: missing some values from embed.h
Files patched: embed.h

NETaa13525: random cleanup
Files patched: MANIFEST Todo cop.h lib/TieHash.pm lib/perl5db.pl opcode.h patchlevel.h pod/perldata.pod pod/perlsub.pod t/op/ref.t toke.c

NETaa13525: random cleanup
Files patched: pp_ctl.c util.c

NETaa13527: File::Find needed to export $name and $dir
From: Chaim Frenkel
Files patched: lib/File/Find.pm
 They are now exported.

NETaa13528: cv_undef left unaccounted-for GV pointer in CV
From: Tye McQueen
Also: Spider Boardman
Files patched: op.c

NETaa13530: scalar keys now resets hash iterator
From: Tim Bunce
Files patched: doop.c
 scalar keys() now resets the hash iterator.

NETaa13531: h2ph doesn't check defined right
From: Casper H.S. Dik
Files patched: h2ph.SH

NETaa13540: VMS update
From: Larry Wall
Files patched: MANIFEST README.vms doio.c embed.h ext/DynaLoader/dl_vms.xs interp.sym lib/Cwd.pm lib/ExtUtils/xsubpp lib/File/Basename.pm lib/File/Find.pm lib/File/Path.pm mg.c miniperlmain.c perl.c perl.h perly.c perly.c.diff pod/perldiag.pod pp_ctl.c pp_hot.c pp_sys.c proto.h util.c vms/Makefile vms/config.vms vms/descrip.mms vms/ext/Filespec.pm vms/ext/MM_VMS.pm vms/ext/VMS/stdio/Makefile.PL vms/ext/VMS/stdio/stdio.pm vms/ext/VMS/stdio/stdio.xs vms/genconfig.pl vms/perlvms.pod vms/sockadapt.c vms/sockadapt.h vms/vms.c vms/vmsish.h vms/writemain.pl

NETaa13540: got some duplicate code
Files patched: lib/File/Path.pm

NETaa13540: stuff from Charles
Files patched: MANIFEST README.vms lib/ExtUtils/MakeMaker.pm lib/ExtUtils/MakeMaker.pm lib/ExtUtils/xsubpp lib/File/Basename.pm lib/File/Path.pm perl.c perl.h pod/perldiag.pod pod/perldiag.pod vms/Makefile vms/Makefile vms/config.vms vms/config.vms vms/descrip.mms vms/descrip.mms vms/ext/Filespec.pm vms/ext/Filespec.pm vms/ext/MM_VMS.pm vms/ext/MM_VMS.pm vms/ext/VMS/stdio/stdio.pm vms/ext/VMS/stdio/stdio.xs vms/gen_shrfls.pl vms/gen_shrfls.pl vms/genconfig.pl vms/genconfig.pl vms/mms2make.pl vms/perlvms.pod vms/sockadapt.h vms/test.com vms/vms.c vms/vms.c vms/vmsish.h vms/vmsish.h vms/writemain.pl

NETaa13540: tweak from Charles
Files patched: lib/File/Path.pm

NETaa13552: scalar unpack("P4",...) ignored the 4
From: Eric Arnold
Files patched: pp.c
 The optimization that tried to do only one item in a scalar context didn't
 realize that the argument to P was not a repeat count.

NETaa13553: now warns about 8 or 9 in octal escapes
From: Mike Rogers
Files patched: util.c
 Now warns if it finds 8 or 9 before the end of the octal escape sequence.
 So \039 produces a warning, but \0339 does not.

NETaa13554: now allows foreach ${"name"}
From: Johan Holtman
Files patched: op.c
 Instead of trying to remove OP_RV2SV, the compiler now just transmutes it into an
 OP_RV2GV, which is a no-op for ordinary variables and does the right
 thing for ${"name"}.

NETaa13559: substitution now always checks for readonly
From: Rodger Anderson
Files patched: pp_hot.c
 Substitution now always checks for readonly.

NETaa13561: added explanations of closures and curly-quotes
From: Larry Wall
Files patched: pod/perlref.pod

NETaa13562: null components in path cause indigestion
From: Ambrose Kofi Laing
Files patched: lib/Cwd.pm lib/pwd.pl

NETaa13575: documented semantics of negative substr length
From: Jeff Bouis
Files patched: pod/perlfunc.pod
 Documented the fact that negative length now leaves characters off the end,
 and while I was at it, made it work right even if offset wasn't 0.

NETaa13575: negative length to substr didn't work when offset non-zero
Files patched: pp.c
 (same)

NETaa13575: random cleanup
Files patched: pod/perlfunc.pod
 (same)

NETaa13580: couldn't localize $ACCUMULATOR
From: Larry Wall
Files patched: gv.c lib/English.pm mg.c perl.c sv.c
 Needed to make $^A a real magical variable.  Also lib/English.pm wasn't
 exporting good.

NETaa13583: doc mods from Tom
From: Larry Wall
Files patched: pod/modpods/AnyDBMFile.pod pod/modpods/Basename.pod pod/modpods/Benchmark.pod pod/modpods/Cwd.pod pod/modpods/Dynaloader.pod pod/modpods/Exporter.pod pod/modpods/Find.pod pod/modpods/Finddepth.pod pod/modpods/Getopt.pod pod/modpods/MakeMaker.pod pod/modpods/Open2.pod pod/modpods/POSIX.pod pod/modpods/Ping.pod pod/modpods/less.pod pod/modpods/strict.pod pod/perlapi.pod pod/perlbook.pod pod/perldata.pod pod/perlform.pod pod/perlfunc.pod pod/perlipc.pod pod/perlmod.pod pod/perlobj.pod pod/perlref.pod pod/perlrun.pod pod/perlsec.pod pod/perlsub.pod pod/perltrap.pod pod/perlvar.pod

NETaa13589: return was enforcing list context on its arguments
From: Tim Freeman
Files patched: opcode.pl
 A return was being treated like a normal list operator, in that it was
 setting list context on its arguments.  This was bogus.

NETaa13591: POSIX::creat used wrong argument
From: Paul Marquess
Files patched: ext/POSIX/POSIX.pm
 Applied suggested patch.

NETaa13605: use strict refs error message now displays bad ref
From: Peter Gordon
Files patched: perl.h pod/perldiag.pod pp.c pp_hot.c
 Now says

     Can't use string ("2") as a HASH ref while "strict refs" in use at ./foo line 12.

NETaa13630: eof docs were unclear
From: Hallvard B Furuseth
Files patched: pod/perlfunc.pod
 Applied suggested patch.

NETaa13636: $< and $> weren't refetched on undump restart
From: Steve Pearlmutter
Files patched: perl.c
 The code in main() bypassed perl_construct on an undump restart, which bypassed
 the code that set $< and $>.

NETaa13641: added Tim's fancy new import whizbangers
From: Tim Bunce
Files patched: lib/Exporter.pm
 Applied suggested patch.

NETaa13649: couldn't AUTOLOAD a symbol reference
From: Larry Wall
Files patched: pp_hot.c
 pp_entersub needed to guarantee a CV so it would get to the AUTOLOAD code.

NETaa13651: renamed file had wrong package name
From: Andreas Koenig
Files patched: lib/File/Path.pm
 Applied suggested patch.

NETaa13660: now that we're testing distribution we can diagnose RANDBITS errors
From: Karl Glazebrook
Files patched: t/op/rand.t
 Changed to suggested algorithm.  Also duplicated it to test rand(100) too.

NETaa13660: rand.t didn't test for proper distribution within range
Files patched: t/op/rand.t
 (same)

NETaa13671: array slice misbehaved in a scalar context
From: Tye McQueen
Files patched: pp.c
 A spurious else prevented the scalar-context-handling code from running.

NETaa13672: filehandle constructors in POSIX don't return failure successfully
From: Ian Phillipps
Files patched: ext/POSIX/POSIX.pm
 Applied suggested patch.


NETaa13678: forced $1 to always be untainted
From: Ka-Ping Yee
Files patched: mg.c
 I believe the bug that triggered this was fixed elsewhere, but just in case,
 I put in explicit code to force $1 et al not to be tainted regardless.

NETaa13682: formline doc need to discuss ~ and ~~ policy
From: Peter Gordon
Files patched: pod/perlfunc.pod

NETaa13686: POSIX::open and POSIX::mkfifo didn't check tainting
From: Larry Wall
Files patched: ext/POSIX/POSIX.xs
 open() and mkfifo() now check tainting.

NETaa13687: new Exporter.pm
From: Tim Bunce
Files patched: lib/Exporter.pm
 Added suggested changes, except for @EXPORTABLE, because it looks too much
 like @EXPORTTABLE.  Decided to stick with @EXPORT_OK because it looks more
 like an adjunct.  Also added an export_tags routine.  The keys in the
 %EXPORT_TAGS hash no longer use colons, to make the initializers prettier.

NETaa13687: new Exporter.pm
Files patched: ext/POSIX/POSIX.pm
 (same)

NETaa13694: add sockaddr_in to Socket.pm
From: Tim Bunce
Files patched: ext/Socket/Socket.pm
 Applied suggested patch.

NETaa13695: library routines should use qw() as good example
From: Dean Roehrich
Files patched: ext/DB_File/DB_File.pm ext/DynaLoader/DynaLoader.pm ext/Fcntl/Fcntl.pm ext/GDBM_File/GDBM_File.pm ext/POSIX/POSIX.pm ext/Socket/Socket.pm
 Applied suggested patch.

NETaa13696: myconfig should be a routine in Config.pm
From: Kenneth Albanowski
Files patched: configpm
 Applied suggested patch.

NETaa13704: fdopen closed fd on failure
From: Hallvard B Furuseth
Files patched: doio.c
 Applied suggested patch.

NETaa13706: Term::Cap doesn't work
From: Dean Roehrich
Files patched: lib/Term/Cap.pm
 Applied suggested patch.

NETaa13710: cryptswitch needed to be more "useable"
From: Tim Bunce
Files patched: embed.h global.sym perl.h toke.c
 The cryptswitch_fp function now can operate in two modes.  It can
 modify the global rsfp to redirect input as before, or it can modify
 linestr and return true, indicating that it is not necessary for yylex
 to read another line since cryptswitch_fp has just done it.

NETaa13712: new_tmpfile() can't be called as constructor
From: Hans Mulder
Files patched: ext/POSIX/POSIX.xs
 Now allows new_tmpfile() to be called as a constructor.

NETaa13714: variable method call not documented
From: "Randal L. Schwartz"
Files patched: pod/perlobj.pod
 Now indicates that OBJECT->$method() works.

NETaa13715: PACK->$method produces spurious warning
From: Larry Wall
Files patched: toke.c
 The -> operator was telling the lexer to expect an operator when the
 next thing was a variable.

NETaa13716: Carp now allows multiple packages to be skipped out of
From: Larry Wall
Files patched: lib/Carp.pm
 The subroutine redefinition warnings now warn on import collisions.

NETaa13716: Exporter catches warnings and gives a better line number
Files patched: lib/Exporter.pm
 (same)

NETaa13716: now counts imported routines as "defined" for redef warnings
Files patched: op.c sv.c
 (same)

-------------
Version 5.000
-------------

New things
----------
    The -w switch is much more informative.

    References.  See t/op/ref.t for examples.  All entities in Perl 5 are
    reference counted so that it knows when each item should be destroyed.

    Objects.  See t/op/ref.t for examples.

    => is now a synonym for comma.  This is useful as documentation for
    arguments that come in pairs, such as initializers for associative arrays,
    or named arguments to a subroutine.

    All functions have been turned into list operators or unary operators,
    meaning the parens are optional.  Even subroutines may be called as
    list operators if they've already been declared.

    More embeddible.  See main.c and embed_h.sh.  Multiple interpreters
    in the same process are supported (though not with interleaved
    execution yet).

    The interpreter is now flattened out.  Compare Perl 4's eval.c with
    the perl 5's pp.c.  Compare Perl 4's 900 line interpreter loop in cmd.c
    with Perl 5's 1 line interpreter loop in run.c.  Eventually we'll make
    everything non-blocking so we can interface nicely with a scheduler.

    eval is now treated more like a subroutine call.  Among other things,
    this means you can return from it.

    Format value lists may be spread over multiple lines by enclosing in
    a do {} block.

    You may now define BEGIN and END subroutines for each package.  The BEGIN
    subroutine executes the moment it's parsed.  The END subroutine executes
    just before exiting.

    Flags on the #! line are interpreted even if the script wasn't
    executed directly.  (And even if the script was located by "perl -x"!)

    The ?: operator is now legal as an lvalue.

    List context now propagates to the right side of && and ||, as well
    as the 2nd and 3rd arguments to ?:.

    The "defined" function can now take a general expression.

    Lexical scoping available via "my".  eval can see the current lexical
    variables.

    The preferred package delimiter is now :: rather than '.

    tie/untie are now preferred to dbmopen/dbmclose.  Multiple DBM
    implementations are allowed in the same executable, so you can
    write scripts to interchange data among different formats.

    New "and" and "or" operators work just like && and || but with
    a precedence lower than comma, so they work better with list operators.

    New functions include: abs(), chr(), uc(), ucfirst(), lc(), lcfirst(),
    chomp(), glob()

    require with a number checks to see that the version of Perl that is
    currently running is at least that number.

    Dynamic loading of external modules is now supported.

    There is a new quote form qw//, which is equivalent to split(' ', q//).

    Assignment of a reference to a glob value now just replaces the
    single element of the glob corresponding to the reference type:
    *foo = \$bar, *foo = \&bletch;

    Filehandle methods are now supported:
    output_autoflush STDOUT 1;

    There is now an "English" module that provides human readable translations
    for cryptic variable names.

    Autoload stubs can now call the replacement subroutine with goto &realsub.

    Subroutines can be defined lazily in any package by declaring an AUTOLOAD
    routine, which will be called if a non-existent subroutine is called in
    that package.

    Several previously added features have been subsumed under the new
    keywords "use" and "no".  Saying "use Module LIST" is short for
    BEGIN { require Module; import Module LIST; }
    The "no" keyword is identical except that it calls "unimport" instead.
    The earlier pragma mechanism now uses this mechanism, and two new
    modules have been added to the library to implement "use integer"
    and variations of "use strict vars, refs, subs".

    Variables may now be interpolated literally into a pattern by prefixing
    them with \Q, which works just like \U, but backwhacks non-alphanumerics
    instead.  There is also a corresponding quotemeta function.

    Any quantifier in a regular expression may now be followed by a ? to
    indicate that the pattern is supposed to match as little as possible.

    Pattern matches may now be followed by an m or s modifier to explicitly
    request multiline or singleline semantics.  An s modifier makes . match
    newline.

    Patterns may now contain \A to match only at the beginning of the string,
    and \Z to match only at the end.  These differ from ^ and $ in that
    they ignore multiline semantics.  In addition, \G matches where the
    last interation of m//g or s///g left off.

    Non-backreference-producing parens of various sorts may now be
    indicated by placing a ? directly after the opening parenthesis,
    followed by a character that indicates the purpose of the parens.
    An :, for instance, indicates simple grouping.  (?:a|b|c) will
    match any of a, b or c without producing a backreference.  It does
    "eat" the input.  There are also assertions which do not eat the
    input but do lookahead for you.  (?=stuff) indicates that the next
    thing must be "stuff".  (?!nonsense) indicates that the next thing
    must not be "nonsense".

    The negation operator now treats non-numeric strings specially.
    A -"text" is turned into "-text", so that -bareword is the same
    as "-bareword".  If the string already begins with a + or -, it
    is flipped to the other sign.

Incompatibilities
-----------------
    @ now always interpolates an array in double-quotish strings.  Some programs
    may now need to use backslash to protect any @ that shouldn't interpolate.

    Ordinary variables starting with underscore are no longer forced into
    package main.

    s'$lhs'$rhs' now does no interpolation on either side.  It used to
    interplolate $lhs but not $rhs.

    The second and third arguments of splice are now evaluated in scalar
    context (like the book says) rather than list context.

    Saying "shift @foo + 20" is now a semantic error because of precedence.

    "open FOO || die" is now incorrect.  You need parens around the filehandle.

    The elements of argument lists for formats are now evaluated in list
    context.  This means you can interpolate list values now.

    You can't do a goto into a block that is optimized away.  Darn.

    It is no longer syntactically legal to use whitespace as the name
    of a variable, or as a delimiter for any kind of quote construct.

    Some error messages will be different.

    The caller function now returns a false value in a scalar context if there
    is no caller.  This lets library files determine if they're being required.

    m//g now attaches its state to the searched string rather than the
    regular expression.

    "reverse" is no longer allowed as the name of a sort subroutine.

    taintperl is no longer a separate executable.  There is now a -T
    switch to turn on tainting when it isn't turned on automatically.

    Symbols starting with _ are no longer forced into package main, except
    for $_ itself (and @_, etc.).

    Double-quoted strings may no longer end with an unescaped $ or @.

    Negative array subscripts now count from the end of the array.

    The comma operator in a scalar context is now guaranteed to give a
    scalar context to its arguments.

    The ** operator now binds more tightly than unary minus.

    Setting $#array lower now discards array elements so that destructors
    work reasonably.

    delete is not guaranteed to return the old value for tied arrays,
    since this capability may be onerous for some modules to implement.

    Attempts to set $1 through $9 now result in a run-time error.