From: Gurusamy Sarathy Date: Sat, 9 Oct 1999 22:46:23 +0000 (+0000) Subject: perldelta updates (see TODO markers) X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=a5222a85df7dfe8ad93b5297d6d78bde7237b334;p=p5sagit%2Fp5-mst-13.2.git perldelta updates (see TODO markers) p4raw-id: //depot/perl@4325 --- diff --git a/Changes b/Changes index 2f11fa7..1eba9ec 100644 --- a/Changes +++ b/Changes @@ -79,6 +79,153 @@ Version 5.005_62 Development release working toward 5.006 ---------------- ____________________________________________________________________________ +[ 4324] By: gsar on 1999/10/09 19:43:10 + Log: fix Exporter::export_to_level() documentation + Branch: perl + ! lib/Exporter.pm +____________________________________________________________________________ +[ 4323] By: gsar on 1999/10/09 18:48:31 + Log: don't run END blocks when running under -c switch (older, + rarely useful, behavior may still be obtained by putting + BEGIN { $^C = 0; exit; } at the end of the script) + Branch: perl + ! perl.c +____________________________________________________________________________ +[ 4322] By: jhi on 1999/10/09 05:31:26 + Log: While awaiting a good test program to detect the broken gcc. + From: Thomas Conté + To: + Cc: + Subject: Re: [ID 19990825.007] test t/lib/ipc_sysv.t failing under irix 6.4 + Date: Wed, 6 Oct 1999 19:56:29 +0200 + Message-ID: <000a01bf1024$1d938f20$252ad0d4@eng.iway.fr> + Branch: cfgperl + ! hints/irix_6.sh perl.h +____________________________________________________________________________ +[ 4321] By: gsar on 1999/10/09 00:41:02 + Log: POPSUB() gave up the refcount to the CV before LEAVE had a chance to + clear entries in the CV's pad, leading to coredumps when CV had no + other references to it; this is a slightly edited version of the + patch suggested by Russel O'Connor + Branch: perl + ! cop.h pp_ctl.c pp_hot.c +____________________________________________________________________________ +[ 4320] By: gsar on 1999/10/08 22:50:51 + Log: revert POP{SUB,LOOP}{1,2} logic to the simpler pre-5.003_24 + situation (assumptions about cx invalidation are not valid + anymore) + Branch: perl + ! cop.h pp_ctl.c pp_hot.c +____________________________________________________________________________ +[ 4319] By: jhi on 1999/10/08 14:33:31 + Log: Integrate with Sarathy. + Branch: cfgperl + !> cop.h ext/Thread/Thread.xs op.c opcode.h perl.c perl.h perly.c + !> perly.y pod/perldiag.pod pod/perlfunc.pod pp_ctl.c pp_sys.c + !> t/comp/bproto.t thrdvar.h toke.c util.c +____________________________________________________________________________ +[ 4318] By: jhi on 1999/10/08 13:51:34 + Log: The second cut at AIX C++ extension troubles. + Branch: cfgperl + ! ext/DynaLoader/dl_aix.xs ext/DynaLoader/hints/aix.pl + ! hints/aix.sh +____________________________________________________________________________ +[ 4317] By: jhi on 1999/10/08 10:44:13 + Log: The first cut at fixing Perl extensions written in C++ in AIX, + statics don't get initialized right. This patch at least + doesn't seem to break the build in my AIX, but unfortunately + I don't have the IBM C++ to do further testing. + + Problem reported by Stephanie Beals in + From: bealzy@us.ibm.com + To: perl5-porters@perl.org + Subject: [ID 19991007.005] DynaLoader/dl_aix.xs problem using load and unload on AIX + Date: Thu, 7 Oct 1999 15:05:54 -0400 + Message-Id: <85256803.0068E70D.00@D51MTA03.pok.ibm.com> + Branch: cfgperl + + ext/DynaLoader/hints/aix.pl + ! MANIFEST ext/DynaLoader/dl_aix.xs hints/aix.sh +____________________________________________________________________________ +[ 4316] By: gsar on 1999/10/08 10:26:15 + Log: remove kludgey duplicate background error avoidance (caused + "leaks"; %@ wasn't even user-visible under -Dusethreads); + only repeats of most recent error are now avoided + Branch: perl + ! ext/Thread/Thread.xs perl.c perl.h pp_ctl.c thrdvar.h util.c +____________________________________________________________________________ +[ 4315] By: jhi on 1999/10/08 09:48:59 + Log: Fix omission. + Branch: cfgperl + ! makedef.pl +____________________________________________________________________________ +[ 4314] By: gsar on 1999/10/08 07:17:01 + Log: extend change#2299 to C (fixes scoping problems in + C) + Branch: perl + ! op.c +____________________________________________________________________________ +[ 4313] By: gsar on 1999/10/08 04:52:19 + Log: small tweak for change#4309 + Branch: perl + ! op.c +____________________________________________________________________________ +[ 4312] By: gsar on 1999/10/08 02:31:13 + Log: add suggested patch =~ s/NOTOP/OP_NOT/ with tests + From: Larry Wall + Date: Wed, 6 Oct 1999 09:55:57 -0700 (PDT) + Message-Id: <199910061655.JAA11333@kiev.wall.org> + Subject: Re: [ID 19991001.004] apparent parsing error with not(arg) + Branch: perl + ! opcode.h t/comp/bproto.t toke.c +____________________________________________________________________________ +[ 4311] By: gsar on 1999/10/08 00:58:19 + Log: typo + Branch: perl + ! pp_sys.c +____________________________________________________________________________ +[ 4310] By: gsar on 1999/10/07 23:51:38 + Log: fix setpgrp vs getpgrp and POSIX vs BSD confusion (spotted by + Brian Mitchell ) + Branch: perl + ! pod/perldiag.pod pod/perlfunc.pod pp_sys.c +____________________________________________________________________________ +[ 4309] By: gsar on 1999/10/07 22:57:52 + Log: change#3728 was flawed (loop contexts saw the wrong statement + info, causing loop control constructs to not find the label); + disable OP_SETSTATE entirely and add a fix that is specifically + targetted at disabling the OP_LINESEQ optimization in else BLOCK, + which was what the original patch was supposed to fix + + TODO: remove the remainder of the setstate logic if it can't + be used anywhere else (it isn't used anywhere now) + Branch: perl + ! cop.h op.c perly.c perly.y +____________________________________________________________________________ +[ 4308] By: jhi on 1999/10/07 19:21:27 + Log: Integrate with Sarathy. + Branch: cfgperl + !> lib/Pod/Man.pm lib/Pod/Text.pm pod/pod2man.PL +____________________________________________________________________________ +[ 4307] By: gsar on 1999/10/07 15:12:24 + Log: update to podlators-0.08 from Russ Allbery + Branch: perl + ! lib/Pod/Man.pm lib/Pod/Text.pm pod/pod2man.PL +____________________________________________________________________________ +[ 4306] By: jhi on 1999/10/06 17:20:34 + Log: Integrate with Sarathy. + Branch: cfgperl + !> (integrate 45 files) +____________________________________________________________________________ +[ 4305] By: gsar on 1999/10/06 16:55:45 + Log: some versions of mingw32 have __int64, define iff it isn't + Branch: perl + ! win32/win32.h +____________________________________________________________________________ +[ 4304] By: gsar on 1999/10/06 03:45:44 + Log: fix typos in change#4288 + Branch: perl + ! Changes dump.c sv.c +____________________________________________________________________________ [ 4303] By: gsar on 1999/10/06 03:22:46 Log: integrate cfgperl contents into mainline Branch: perl @@ -1528,11 +1675,6 @@ ____________________________________________________________________________ + t/lib/gol-basic.t t/lib/gol-compat.t t/lib/gol-linkage.t ! Changes MANIFEST lib/Getopt/Long.pm ____________________________________________________________________________ -[ 4117] By: jhi on 1999/09/09 18:24:30 - Log: Remove ill-designed %B introduced by change #4111. - Branch: cfgperl - ! sv.c t/op/sprintf.t -____________________________________________________________________________ [ 4116] By: jhi on 1999/09/09 15:56:52 Log: perldeltify change #4115. Branch: cfgperl @@ -1578,11 +1720,6 @@ ____________________________________________________________________________ Branch: cfgperl ! regexec.c t/op/pat.t ____________________________________________________________________________ -[ 4111] By: jhi on 1999/09/09 07:50:07 - Log: %#b in particular and %B in general were kaputt. - Branch: cfgperl - ! sv.c t/op/sprintf.t -____________________________________________________________________________ [ 4110] By: jhi on 1999/09/09 07:29:17 Log: Tidy up 64-bit situation in perldelta. Branch: cfgperl @@ -7665,13 +7802,6 @@ ____________________________________________________________________________ Branch: perl ! win32/win32.c ____________________________________________________________________________ -[ 3315] By: nick on 1999/05/06 21:44:38 - Log: open(FH,undef) # creates new_tmpfile opened read/write - Add t/io/open.t with test for above. - Branch: perl - + t/io/open.t - ! pp_sys.c -____________________________________________________________________________ [ 3314] By: gsar on 1999/05/06 08:01:23 Log: compiler fixes from Vishal Bhatia Date: Tue, 30 Mar 1999 23:40:34 PST diff --git a/pod/perldelta.pod b/pod/perldelta.pod index 9489c58..1d87e5c 100644 --- a/pod/perldelta.pod +++ b/pod/perldelta.pod @@ -1,6 +1,6 @@ =head1 NAME -perldelta - what's new for perl v5.6 (as of v5.005_61) +perldelta - what's new for perl v5.6 (as of v5.005_62) =head1 DESCRIPTION @@ -15,7 +15,12 @@ This document describes differences between the 5.005 release and this one. =head2 Perl Source Incompatibilities -TODO +Beware that any new warnings that have been added are B considered +incompatible changes. + +Since all new warnings must be explicitly requested via the C<-w> +switch or the C pragma, it is ultimately the programmer's +responsibility to ensure that warnings are enabled judiciously. =over 4 @@ -27,6 +32,67 @@ random(), and rand() (in that order) and picks the first one it finds. Perl programs that depend on reproducing a specific set of pseudo-random numbers will now likely produce different output. +=item Hashing function for hash keys has changed + +Perl hashes are not order preserving. The apparently random order +encountered when iterating on the contents of a hash is determined +by the hashing algorithm used. To improve the distribution of lower +bits in the hashed value, the algorithm has changed slightly as of +5.005_52. When iterating over hashes, this may yield a random order +that is B from that of previous versions. + +=item C fails on read only values + +Using the C operator on a readonly value (such as $1) has +the same effect as assigning C to the readonly value--it +throws an exception. + +=item Close-on-exec bit may be set on pipe() handles + +On systems that support a close-on-exec flag on filehandles, the +flag will be set for any handles created by pipe(), if that is +warranted by the value of $^F that may be in effect. Earlier +versions neglected to set the flag for handles created with +pipe(). See L and L. + +=item Writing C<"$$1"> to mean C<"${$}1"> is unsupported + +Perl 5.004 deprecated the interpretation of C<$$1> and +similar within interpolated strings to mean C<$$ . "1">, +but still allowed it. + +In Perl 5.6 and later, C<"$$1"> always means C<"${$1}">. + +=item values(%h) and C<\(%h)> operate on aliases to values, not copies + +each(), values() and hashes in a list context return the actual +values in the hash, instead of copies (as they used to in earlier +versions). Typical idioms for using these constructs copy the +returned values, but this is can make a significant difference when +creating references to the returned values. + +Keys in the hash are still returned as copies when iterating on +on a hash. + +=item vec(EXPR,OFFSET,BITS) enforces powers-of-two BITS + +vec() generates a run-time error if the BITS arguments is not +a valid power-of-two integer. + +=item Text of some diagnostic output has changed + +Most references to internal Perl operations in diagnostics +have been changed to be more descriptive. This may be an +issue for programs that may incorrectly rely on the exact +text of diagnostics for proper functioning. + +=item C<%@> has been removed + +The undocumented special variable C<%@> that used to accumulate +"background" errors (such as those that happen in DESTROY()) +has been removed, because it could potentially result in memory +leaks. + =back =head2 C Source Incompatibilities @@ -118,6 +184,11 @@ the old names are still supported when F is explicitly included (as required before), so there is no source incompatibility from the change. +=item Support for C++ exceptions + +change#3386, also needs perlguts documentation +[TODO - Chip Salzenberg ] + =back =head2 Binary Incompatibilities @@ -128,12 +199,45 @@ release or its maintenance versions. The usethreads or usemultiplicity builds are B binary compatible with the corresponding builds in 5.005. +=head1 Installation and Configuration Improvements + +=head2 New Configure flags + +The following new flags may be enabled on the Configure command line +by running Configure with C<-Dflag>. + + usemultiplicity + usemorebits + uselargefiles + [what others?] + +[TODO - Jarkko Hietaniemi ] + +=head2 installusrbinperl + +You can use "Configure -Uinstallusrbinperl" which causes installperl +to skip installing perl also as /usr/bin/perl. This is useful if you +prefer not to modify /usr/bin for some reason or another but harmful +because many scripts assume to find Perl in /usr/bin/perl. + +=head2 SOCKS support + +You can use "Configure -Dusesocks" which causes Perl to probe +for the SOCKS proxy protocol library, http://www.socks.nec.com/ + +=head2 C<-A> flag + +You can "post-edit" the Configure variables using the Configure C<-A> +flag. The editing happens immediately after the platform specific +hints files have been processed but before the actual configuration +process starts. Run C to find out the full C<-A> syntax. + =head1 Core Changes =head2 Unicode and UTF-8 support Perl can optionally use UTF-8 as its internal representation for character -strings. The C pragma enables this support in the current lexical +strings. The C pragma enables this support in the current lexical scope. See L for more information. =head2 Lexically scoped warning categories @@ -142,6 +246,30 @@ You can now control the granularity of warnings emitted by perl at a finer level using the C pragma. See L and L for details. +=head2 Lvalue subroutines + +WARNING: This is an experimental feature. + +change#4081 +[TODO - Ilya Zakharevich , +Tuomas Lukka )] + +=head2 "our" declarations + +An "our" declaration introduces a value that can be best understood +as a lexically scoped symbolic alias to a global variable in the +current package. This is mostly useful as an alternative to the +C pragma, but also provides the opportunity to introduce +typing and other attributes for such variables. See L. + +=head2 Weak references + +WARNING: This is an experimental feature. + +change#3385, also need perlguts documentation + +[TODO - Tuomas Lukka ] + =head2 Binary numbers supported Binary numbers are now supported as literals, in s?printf formats, and @@ -150,9 +278,40 @@ C: $answer = 0b101010; printf "The answer is: %b\n", oct("0b101010"); +=head2 Some arrows may be omitted in calls through references + +Perl now allows the arrow to be omitted in many constructs +involving subroutine calls through references. For example, +C<$foo[10]->('foo')> may now be written C<$foo[10]('foo')>. +This is rather similar to how the arrow may be omitted from +C<$foo[10]->{'foo'}>. Note however, that the arrow is still +required for C('bar')>. + =head2 syswrite() ease-of-use -The length argument of C is now optional. +The length argument of C has become optional. + +=head2 Filehandles can be autovivified + +The construct C can be used to create filehandles +more easily. The filehandle will be automatically closed at the end +of the scope of $fh, provided there are no other references to it. This +largely eliminates the need for typeglobs when opening filehandles +that must be passed around, as in the following example: + + sub myopen { + open my $fh, "@_" + or die "Can't open '@_': $!"; + return $fh; + } + + { + my $f = myopen("; + # $f implicitly closed here + } + +[TODO - this idiom needs more pod penetration] =head2 64-bit support @@ -162,20 +321,34 @@ use "quads" (64-integers) as follows: =over 4 -=item constants (decimal, hexadecimal, octal, binary) in the code +=item * + +constants (decimal, hexadecimal, octal, binary) in the code + +=item * -=item arguments to oct() and hex() +arguments to oct() and hex() -=item arguments to print(), printf() and sprintf() (flag prefixes ll, L, q) +=item * + +arguments to print(), printf() and sprintf() (flag prefixes ll, L, q) + +=item * -=item printed as such +printed as such -=item pack() and unpack() "q" and "Q" formats +=item * + +pack() and unpack() "q" and "Q" formats + +=item * + +in basic arithmetics: + - * / % + +=item * -=item in basic arithmetics: + - * / % +vec() (but see the below note about bit arithmetics) -=item vec() (but see the below note about bit arithmetics) - =back Note that unless you have the case (a) you will have to configure @@ -282,9 +455,15 @@ native shorts, ints, and longs. See L. =head2 pack() and unpack() support counted strings -The template character '#' can be used to specify a counted string +The template character '/' can be used to specify a counted string type to be packed or unpacked. See L. +=head2 Comments in pack() templates + +The '#' character in a template introduces a comment up to +end of the line. This facilitates documentation of pack() +templates. + =head2 $^X variables may now have names longer than one character Formerly, $^X was synonymous with ${"\cX"}, but $^XY was a syntax @@ -323,6 +502,55 @@ That can now be accomplished with a declaration syntax, like this: F and F have been updated to keep the attributes with the stubs they provide. See L. +=head2 Regular expression improvements + +change#2827,2373,2372,2365,1813,1800,4112,4158,4215,4301 +[TODO - Ilya Zakharevich ] + +=head2 Overloading improvements + +change#2150 +[TODO - Ilya Zakharevich ] + +=head2 open() with more than two arguments + +[TODO - Ilya Zakharevich ] + +=head2 Support for interpolating named characters + +change#4052 +[TODO - Ilya Zakharevich ] + +=head2 Experimental support form user-hooks in @INC + +[TODO - Ken Fox ] + +=head2 C and C may be overridden + +C and C operations may be overridden locally +by importing subroutines of the same name into the current package +(or globally by importing them into the CORE::GLOBAL:: namespace). +Overriding C will also affect C, provided the override +is visible at compile-time. +See L. + +=head2 New variable $^C reflects C<-c> switch + +C<$^C> contains a boolean that reflects whether perl is being run +in compile-only mode (i.e. via the C<-c> switch). Since +BEGIN blocks are executed under such conditions, this variable +enables perl code to determine whether actions that make sense +only during normal running are warranted. See L. + +=head2 Optional Y2K warnings + +If Perl is built with the cpp macro C defined, +it emits optional warnings when concatenating the number 19 +with another number. + +This behavior must be specifically enabled when running Configure. +See L and L. + =head1 Significant bug fixes =head2 EHANDLEE on empty files @@ -357,6 +585,21 @@ Parsing of here documents used to be flawed when they appeared as the replacement expression in C. This has been fixed. +=head2 All compilation errors are true errors + +Some "errors" encountered at compile time were by neccessity +generated as warnings followed by eventual termination of the +program. This enabled more such errors to be reported in a +single run, rather than causing a hard stop at the first error +that was encountered. + +The mechanism for reporting such errors has been reimplemented +to queue compile-time errors and report them at the end of the +compilation as true errors rather than as warnings. This fixes +error messages that used to leak through as warnings when code +was compiled at run time using C, and allows such +errors to be reliably trapped using __DIE__ hooks. + =head2 Automatic flushing of output buffers fork(), exec(), system(), qx//, and pipe open()s now flush buffers @@ -372,15 +615,186 @@ are compile time errors. Attempting to read from filehandles that were opened only for writing will now produce warnings (just as writing to read-only filehandles does). -=head2 Buffered data discarded from input filehandle when dup'ed. +=head2 Where possible, buffered data discarded from duped input filehandle + +C&OLD")> now attempts to discard any data that +was previously read and buffered in C before duping the handle. +On platforms where doing this is allowed, the next read operation +on C will return the same data as the corresponding operation +on C. Formerly, it would have returned the data from the start +of the following disk block instead. + +=head2 system(), backticks and pipe open now reflect exec() failure + +On Unix and similar platforms, system(), qx() and open(FOO, "cmd |") +etc., are implemented via fork() and exec(). When the underlying +exec() fails, earlier versions did not report the error properly, +since the exec() happened to be in a different process. + +The child process now communicates with the parent about the +error in launching the external command, which allow these +constructs to return with their usual error value and set $!. + +=head2 Implicitly closed filehandles are safer + +Sometimes implicitly closed filehandles (as when they are localized, +and Perl automatically closes them on exiting the scope) could +inadvertently set $? or $!. This has been corrected. + +=head2 C<(\$)> prototype and C<$foo{a}> + +An scalar reference prototype now correctly allows a hash or +array element in that slot. + +=head2 Pseudo-hashes work better + +Dereferencing some types of reference values in a pseudo-hash, +such as C<$ph->{foo}[1]>, was accidentally disallowed. This has +been corrected. + +When applied to a pseudo-hash element, exists() now reports whether +the specified value exists, not merely if the key is valid. + +=head2 C and AUTOLOAD + +C construct works correctly when C<&sub> happens +to be autoloaded. + +=head2 C<-bareword> allowed under C + +The autoquoting of barewords preceded by C<-> did not work +in prior versions when the C pragma was enabled. +This has been fixed. + +=head2 Boolean assignment operators are legal lvalues + +Constructs such as C<($a ||= 2) += 1> are now allowed. + +=head2 C allowed + +sort() did not accept a subroutine reference as the comparison +function in earlier versions. This has been fixed. + +=head2 Failures in DESTROY() + +When code in a destructor threw an exception, it went unnoticed +in earlier versions of Perl, unless someone happened to be +looking in $@ just after the point the destructor happened to +run. Such failures are now visible as warnings when warnings are +enabled. + +=head2 Locale bugs fixed -C&OLD")> now discards any data that was previously -read and buffered in C. The next read operation on C will -return the same data as the corresponding operation on C. -Formerly, it would have returned the data from the start of the -following disk block instead. +change#3542 +[TODO - Jarkko Hietaniemi ] -=head1 Supported Platforms +=head2 Memory leaks + +The C construct could sometimes leak +memory. This has been fixed. + +Operations that aren't filehandle constructors used to leak memory +when used on invalid filehandles. This has been fixed. + +Constructs that modified C<@_> could fail to deallocate values +in C<@_> and thus leak memory. This has been corrected. + +=head2 Spurious subroutine stubs after failed subroutine calls + +Perl could sometimes create empty subroutine stubs when a +subroutine was not found in the package. Such cases stopped +later method lookups from progressing into base packages. +This has been corrected. + +=head2 Consistent numeric conversions + +change#3378,3318 +[TODO - Ilya Zakharevich ] + +=head2 Taint failures under C<-U> + +When running in unsafe mode, taint violations could sometimes +cause silent failures. This has been fixed. + +=head2 END blocks and the C<-c> switch + +Prior versions used to run BEGIN B END blocks when Perl was +run in compile-only mode. Since this is typically not the expected +behavior, END blocks are not executed when the C<-c> switch +is used. + +Note that something resembling the previous behavior can still be +obtained by putting C token creates an implicit filehandle to +the file that contains the token. It is the program's +responsibility to close it when it is done reading from it. + +This caveat is now better explained in the documentation. +See L. + +=head2 Diagnostics follow STDERR + +Diagnostic output now goes to whichever file the C handle +is pointing at, instead of always going to the underlying C runtime +library's C. + +=head2 Other fixes for better diagnostics + +Line numbers are suppressed no more (under most likely circumstances) +during the global destruction phase. + +Diagnostics emitted from code running in threads other than the main +thread are now accompanied by the thread ID. + +Embedded null characters in diagnostics now actually show up. They +used to truncate the message in prior versions. + +$foo::a and $foo::b are now exempt from "possible typo" warnings only +if sort() is encountered in package foo. + +Unrecognized alphabetic escapes encountered when parsing quoting +constructs now generate a warning, since they may take on new +semantics in later versions of Perl. + +=head1 Performance enhancements + +=head2 Simple sort() using { $a <=> $b } and the like are optimized + +Many common sort() opertions using a simple inlined block are now +optimized for faster performance. + +=head2 Optimized assignments to lexical variables + +Certain operations in the RHS of assignment statements have been +optimized to directly set the lexical variable on the LHS, +eliminating redundant copying overheads. + +=head2 Method lookups optimized + +[TODO - Chip Salzenberg ] + +=head2 Faster mechanism to invoke XSUBs + +change#4044,4125 +[TODO - Ilya Zakharevich ] + +=head2 Perl_malloc() improvements + +change#4237 +[TODO - Ilya Zakharevich ] + +=head2 Faster subroutine calls + +Minor changes in how subroutine calls are handled internally +provide marginal improvements in performance. + +=head1 Platform specific changes + +=head2 Additional supported platforms =over 4 @@ -411,6 +825,45 @@ EPOC is is now supported (on Psion 5). =back +=head2 DOS + +[TODO - Laszlo Molnar ] + +=head2 OS/2 + +[TODO - Ilya Zakharevich ] + +=head2 VMS + +[TODO - Charles Bailey ] + +=head2 Win32 + +Site library searches failed to look for ".../site/5.XXX/lib" +if ".../site/5.XXXYY/lib" wasn't found. This has been corrected. + +When given a pathname that consists only of a drivename, such +as C, opendir() and stat() now use the current working +directory for the drive rather than the drive root. + +The builtin XSUB functions in the Win32:: namespace are +documented. See L. + +$^X now contains the full path name of the running executable. + +A Win32::GetLongPathName() function is provided to complement +Win32::GetFullPathName() and Win32::GetShortPathName(). See L. + +POSIX::uname() is supported. + +system(1,...) now returns true process IDs rather than process +handles. kill() accepts any real process id, rather than strictly +return values from system(1,...). + +The C module is supported. + +[TODO - GSAR] + =head1 New tests =over 4 @@ -465,9 +918,14 @@ While used internally by Perl as a pragma, this module also provides a way to fetch subroutine and variable attributes. See L. +=item B + +[TODO - Vishal Bhatia , +Nick Ing-Simmons ] + =item ByteLoader -The ByteLoader is a dedication extension to generate and run +The ByteLoader is a dedicated extension to generate and run Perl bytecode. See L. =item B @@ -475,9 +933,35 @@ Perl bytecode. See L. The Perl Compiler suite has been extensively reworked for this release. +=item constant + +References can now be used. See L. + +=item charnames + +change#4052 +[TODO - Ilya Zakharevich ] + +=item Data::Dumper + +A C setting can be specified to avoid venturing +too deeply into data structures that may be very deep. +See L. + +Dumping C objects works correctly. + +=item DB + +C is an experimental module that exposes a clean abstraction +to Perl's debugging API. + +=item DB_File + +[TODO - Paul Marquess ] + =item Devel::DProf -Devel::DProf, a Perl source code profiler has been added. +Devel::DProf, a Perl source code profiler has been added. See L. =item Dumpvalue @@ -502,11 +986,19 @@ Benchmark: running a, b, each for at least 5 CPU seconds... New features: "each for at least N CPU seconds...", "wallclock secs", and the "@ operations/CPU second (n=operations)". +change#4265,4266,4292 +[TODO - Barrie Slaymaker ] + =item Devel::Peek The Devel::Peek module provides access to the internal representation of Perl variables and data. It is a data debugging tool for the XS programmer. +=item ExtUtils::MakeMaker + +change#4135, also needs docs in module pod +[TODO - Ilya Zakharevich ] + =item Fcntl More Fcntl constants added: F_SETLK64, F_SETLKW64, O_LARGEFILE for @@ -515,6 +1007,19 @@ working, though, so no need to get overly excited), Free/Net/OpenBSD locking behaviour flags F_FLOCK, F_POSIX, Linux F_SHLCK, and O_ACCMODE: the mask of O_RDONLY, O_WRONLY, and O_RDWR. +=item File::Compare + +A compare_text() function has been added, which allows custom +comparison functions. See L. + +=item File::Find + +File::Find now works correctly when the wanted() function is either +autoloaded or is a symbolic reference. + +A bug that cause File::Find to lose track of the working directory +when pruning top-level directories has been fixed. + =item File::Spec New methods have been added to the File::Spec module: devnull() returns @@ -536,6 +1041,27 @@ instead of $fullname = File::Spec->catfile($dir1, $dir2, $file); +=item Getopt::Long + +[TODO - Johan Vromans ] + +=item IO + +write() and syswrite() will now accept a single-argument +form of the call, for consistency with Perl's syswrite(). + +You can now create a TCP-based IO::Socket::INET without forcing +a connect attempt. This allows you to configure its options +(like making it non-blocking) and then call connect() manually. + +A bug that prevented the IO::Socket::protocol() accessor +from ever returning the correct value has been corrected. + +=item JPL + +Java Perl Lingo is now distributed with Perl. See jpl/README +for more information. + =item Math::BigInt The logical operations CE>, CE>, C<&>, C<|>, @@ -551,6 +1077,14 @@ act as mutators (accessor $z->Re(), mutator $z->Re(3)). A little bit of radial trigonometry (cylindrical and spherical), radial coordinate conversions, and the great circle distance were added. +=item Pod::Parser + +[TODO - Brad Appleton ] + +=item Pod::Text and Pod::Man + +[TODO - Russ Allbery ] + =item SDBM_File An EXISTS method has been added to this module (and sdbm_exists() has @@ -558,13 +1092,15 @@ been added to the underlying sdbm library), so one can now call exists on an SDBM_File tied hash and get the correct result, rather than a runtime error. +A bug that may have caused data loss when more than one disk block +happens to be read from the database in a single FETCH() has been +fixed. + =item Time::Local The timelocal() and timegm() functions used to silently return bogus results when the date exceeded the machine's integer range. They -now consistently croak() if the date falls in an unsupported range-- -but on the other hand they now accept "out-of-limits" day-of-month -to make "Julian date" conversions easier. +now consistently croak() if the date falls in an unsupported range. =item Win32 @@ -618,6 +1154,7 @@ from the caller's context. C is currently the only supported attribute. Lexical warnings pragma, C, to control optional warnings. +See L. C to control the behaviour of filetests (C<-r> C<-w> ...). Currently only one subpragma implemented, "use filetest 'access';", @@ -628,7 +1165,22 @@ stat(2) might lie, but access(2) knows better. =head1 Utility Changes -Todo. +=head2 h2ph + +[TODO - Kurt Starsinic ] + +=head2 perlcc + +C now supports the C and Bytecode backends. By default, +it generates output from the simple C backend rather than the +optimized C backend. + +Support for non-Unix platforms has been improved. + +=head2 h2xs + +change#4232 +[TODO - Ilya Zakharevich ] =head1 Documentation Changes @@ -646,6 +1198,10 @@ A tutorial that introduces the essentials of references. A tutorial on managing class data for object modules. +=item perlcompile.pod + +An introduction to using the Perl Compiler suite. + =back =head1 New Diagnostics @@ -767,30 +1323,19 @@ like in the first argument to C. Perl will treat the true or false result of matching the pattern against $_ as the string, which is probably not what you had in mind. -=head1 Obsolete Diagnostics +=item %s() called too early to check prototype -Todo. - -=head1 Configuration Changes - -=head2 installusrbinperl +(W) You've called a function that has a prototype before the parser saw a +definition or declaration for it, and Perl could not check that the call +conforms to the prototype. You need to either add an early prototype +declaration for the subroutine in question, or move the subroutine +definition ahead of the call to get proper prototype checking. Alternatively, +if you are certain that you're calling the function correctly, you may put +an ampersand before the name to avoid the warning. See L. -You can use "Configure -Uinstallusrbinperl" which causes installperl -to skip installing perl also as /usr/bin/perl. This is useful if you -prefer not to modify /usr/bin for some reason or another but harmful -because many scripts assume to find Perl in /usr/bin/perl. - -=head2 SOCKS support - -You can use "Configure -Dusesocks" which causes Perl to probe -for the SOCKS proxy protocol library, http://www.socks.nec.com/ - -=head2 -A flag +=head1 Obsolete Diagnostics -You can "post-edit" the Configure variables using the Configure -A -flag. The editing happens immediately after the platform specific -hints files have been processed but before the actual configuration -process starts. Run Configure -h to find out the full -A syntax. +Todo. =head1 BUGS @@ -817,8 +1362,8 @@ The F and F files for copyright information. =head1 HISTORY -Written by Gurusamy Sarathy >, with many contributions -from The Perl Porters. +Written by Gurusamy Sarathy >, with many +contributions from The Perl Porters. Send omissions or corrections to >. diff --git a/pp_sys.c b/pp_sys.c index ce08d49..271d0ca 100644 --- a/pp_sys.c +++ b/pp_sys.c @@ -532,22 +532,6 @@ PP(pp_open) if (GvIOp(gv)) IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT; -#if 0 /* no undef means tmpfile() yet */ - if (sv == &PL_sv_undef) { -#ifdef PerlIO - PerlIO *fp = PerlIO_tmpfile(); -#else - PerlIO *fp = tmpfile(); -#endif - if (fp != Nullfp && do_open(gv, "+>&", 3, FALSE, 0, 0, fp)) - PUSHi( (I32)PL_forkprocess ); - else - RETPUSHUNDEF; - RETURN; - } -#endif /* no undef means tmpfile() yet */ - - if (mg = SvTIED_mg((SV*)gv, 'q')) { PUSHMARK(SP); XPUSHs(SvTIED_obj((SV*)gv, mg));