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    1 2010-01-27 10:27:00 TonyC
    2     version 3.20
    3         * fix a format string and arguments for some debugging text
    4         * linkify references to alternatives to Storable
    5 
    6 2020-01-27 11:01:00 TonyC
    7     version 3.19
    8         * add casts to match some I32 parameters to "%d" formats (#17339)
    9         * fix dependencies in Makefile.PL -> META (#17422)
   10         * make use of note() optional, this requires a newer version of
   11           Test::More and there's a circular dependency between later
   12           versions of Test::More and Storable  (#17422)
   13 
   14 2019-11-19 07:59:39 TonyC
   15     version 3.18
   16         * update bug tracker to point at github (#17298)
   17         * disallow vstring magic strings over 2GB-1 (#17306)
   18         * mark some ASCII dependent tests as ASCII platform only
   19 
   20 2019-08-08 11:48:00 TonyC
   21     version 3.17
   22         * correct a data type to ensure the check for too large results from
   23 	  STORABLE_freeze() are detected correctly (detected by Coverity)
   24 	* removed remains of stack size detection from the build process.
   25 	* moved CAN_FLOCK detection into XS to simplify the build process.
   26 
   27 2019-06-11 10:43:00 TonyC
   28     version 3.16
   29         * (perl #134179) fix self-referencing structures that include regexps
   30         * bless regexps to preserve bless qr//, "Foo"
   31 
   32 2019-04-23 16:00:00 xsawyerx
   33     version 3.15
   34     * Fix leaking.
   35 
   36 unreleased
   37     version 3.14
   38 	* (perl #133708) don't build-time probe for stack limits at all
   39 
   40 unreleased
   41     version 3.12
   42         * (perl #133411) don't probe for stack limits with -Dusecrosscompile
   43 
   44 2018-04-27 20:40:00 xsawyerx
   45     version 3.11
   46         * Fix Strawberry Perl build failures.
   47 
   48 2018-04-21 22:00:00 xsawyerx
   49     Version 3.10
   50         * Fix binary artifacts from distribution.
   51 
   52 2018-04-21 16:49:00 xsawyerx
   53     Version 3.09
   54         * Fix "provides" in metadata (META.yml/META.json) to use the Storable
   55           template instead of a small other file (which also didn't exist).
   56 
   57 2018-04-21 11:23:00 xsawyerx
   58     Version 3.08
   59         * (perl #132849) try to disable core files when deliberatly segfaulting.
   60         * (perl #127743) don't probe Storable limits so much.
   61         * (perl #132893) don't probe for Storable recursion limits on old Win32.
   62         * (perl #132870) workaround VC2017 compiler bug.
   63         * (perl #127743) re-work for debugging builds with MSVC.
   64         * (perl #133039) dont build a Storable.so/.dll with a static perl build.
   65 
   66 2018-02-07 15:08:00 tonyc
   67     Version 3.06
   68 
   69         * support large object ids.  The code in theory supported arrays
   70         with more than 2**32 elements, but references to the elements
   71         emitted at the end of the array with be retrieved as references to
   72         the wrong elements.
   73         * 32-bit object ids over 2**31-1 weren't correctly handled.
   74         * hook object id generation now supports 64-bit ids where needed
   75         * writing 64-bit lengths in network order now works
   76         * reading 64-bit lengths in network order now reads the components
   77         in the correct order.
   78         * retrieving large object tags are now only handled on 64-bit
   79         platforms, large object tags should only be emitted for objects
   80         that are too large for the 32-bit address space, so it was only
   81         wasted code.
   82         * reading 32-bit lengths for LSCALAR and LUTF8STR as unsigned
   83         (perl #131990)
   84         * reading flagged large object hashes didn't read the flags
   85         * treat the 32-bit size of hook data as unsigned, values over 2GB
   86         were treated as large (close to 2**64) parameters to NEWSV().
   87         (perl #131999)
   88         * added support for hook data over 4GB in size
   89         * zero length data receievd from STORABLE_freeze() no longer
   90         results in an invalid SV being passed to STORABLE_thaw/_attach()
   91         (perl #118551)
   92         * where practical, padding is now cleared when emitting a long
   93         double (perl #131136)
   94         * cache the value of $Storable::DEBUGME (since cperl enabled
   95         Storable TRACEME builds for all -DDEBUGGING builds)
   96         * no longer discard exceptions thrown by
   97         STORABLE_freeze/_thaw/attach() (perl #25933)
   98         * fix dependencies used to build Storable.pm from __Storable__.pm
   99         * add experimental support for freezing/thawing regular
  100         expressions (perl #50608)
  101         * re-work recursion limiting to store the limit in a perl variable
  102         instead of baked into Storable.$so.  This allows static Storable
  103         builds to work, and avoids the kind of circular reference on
  104         Storable.$so.
  105 
  106 2017-07-24 13:57:13 rurban
  107     Version 3.05_13
  108 
  109         * mingw fix: use safe defaults, not segfaulting defaults.
  110         mingw fails on the stacksize binary search, leaving it empty.
  111 
  112 Wed Apr 19 09:11:07 2017 +0200 Reini Urban <rurban@cpan.org>
  113     Version 3.05_12
  114 
  115         * enhance stack reserve from 8 to 16
  116         * fix LD_LIBRARY_PATH usage for CORE
  117         * fixed some coverity warnings and leaks
  118         * added a release make target
  119 
  120 Wed Mar 29 21:04:28 2017 +0200 Reini Urban <rurban@cpan.org>
  121     Version 3.05_11
  122 
  123         * croak on sizes read > I32_MAX
  124         * simplify last_op_in_netorder
  125         * protect from empty retrieve_vstring
  126         * protect store_other error buf, potential static
  127         buffer overflow.
  128 
  129 Tue Mar 14 09:52:20 2017 +0100 Reini Urban <rurban@cpan.org>
  130     Version 3.05_10
  131 
  132         * CORE-only improvements to stacksize
  133 
  134 Thu Mar 9 19:20:19 2017 +0100 Reini Urban <rurban@cpan.org>
  135     Version 3.05_09
  136 
  137         * compute the stacksizes, improve cleanup within croak
  138         from stack exhaustion.
  139         * added stack_depth and stack_depth_hash getters.
  140 
  141 Wed Mar  8 21:03:43 CET 2017 Reini Urban <rurban@cpan.org>
  142     Version 3.05_08
  143 
  144         * finetune the max stack limit, for C++, DEBUGGING and 32bit.
  145         * fix t/blessed.t for cperl5.22
  146 
  147 Sun Mar 5 13:36:47 2017 +0100 Reini Urban <rurban@cpan.org>
  148     Version 3.05_07
  149 
  150         * Fixed a podchecker issue
  151 
  152 Sun Mar 5 11:42:04 2017 +0100 Reini Urban <rurban@cpan.org>
  153     Version 3.05_06
  154 
  155         * Fixed wrong recursion depth error with large arrays containing
  156         another array.
  157 	L<[cperl #257]|https://github.com/perl11/cperl/issues/257>
  158 
  159 Thu Feb 2 12:40:44 2017 +0100 Reini Urban <rurban@cpanel.net>
  160     Version 3.05_05
  161 
  162         * Add leak tests for [cpan #97316], [perl #121928]
  163         * Limit the max recursion depth to 1200 on 32bit systems.
  164         We have no max_depth option yet, as in JSON::XS.
  165 
  166 Thu Feb 2 11:59:21 2017 +0100 Reini Urban <rurban@cpanel.net>
  167     Version 3.05_04
  168 
  169         * Fix retrieve_tied_array which fails since 5.16
  170         [cpan #84705]
  171         * Improve t/blessed.t in the creation of sv_yes/sv_no
  172         with threaded perls.
  173 
  174 Tue Jan 31 02:55:30 2017 +0100 Reini Urban <rurban@cpanel.net>
  175     Version 3.05_03
  176 
  177         * Tune t/recurse.t stack-overflow limit more.
  178 
  179 Mon Jan 30 19:50:29 2017 +0100 Reini Urban <rurban@cpanel.net>
  180     Version 3.05_02
  181 
  182         * Tune t/recurse.t stack-overflow limit. Small 64bit systems overflow
  183         even with depth 3000, where 32bit are ok.
  184 
  185 Mon Jan 30 15:13:38 2017 +0100 Reini Urban <rurban@cpanel.net>
  186     Version 3.05_01
  187 
  188         * Protect against stack overflows with nested arrays and hashes
  189         [cpan #97526]. This imposes a new limit to your nested structures,
  190         but JSON::XS has a limit of 512. We use a max_depth of 3000 for the
  191         typical stack limit of 8k.
  192 
  193 
  194 Sun Jan 29 11:36:43 2017 +0100 Reini Urban <rurban@cpanel.net>
  195     Version 3.05
  196 
  197         * Protect against classname len overflow on the stack
  198         and 2x on the heap with retrieve_bless and retrieve_hook.
  199         A serious security issue with malcrafted storable files or buffers,
  200         but p5p accepts no CVE on Storable attacks. See RT #130635
  201         (reported by JD).
  202         * Fix NULL ptr SEGVs with retrieve_code and retrieve_other.
  203         See RT #130098 (reported and fixed by JD)
  204         * Fix wrong huge LOBJECT support, broken since 3.00c.
  205         Repro with `export PERL_TEST_MEMORY=8`
  206         * Fix the few remaining 2-arg open calls.
  207         * Portability and backport fixes back to 5.6.2
  208 
  209 Sat Jan 7 09:01:29 2017 +0100 Reini Urban <rurban@cpanel.net>
  210     Version 3.04c
  211 
  212         * fix printf types and warnings, esp. for 32bit use64bitint
  213         * Change sv_setpvn(…, "…", …) to sv_setpvs(…, "…")
  214 
  215 Tue Jul 26 11:49:33 2016 +1000 Tony Cook <tony@develop-help.com>
  216     Version 3.03c
  217 
  218         * remove . from @INC when loading optional modules
  219 
  220 Sun Nov 20 18:06:45 2016 +0100 Reini Urban <rurban@cpanel.net>
  221     Version 3.02c
  222 
  223         * Fix -Wc++11-compat warnings, fix -Wchar-subscripts
  224 
  225 Fri Sep 16 01:32:59 2016 +0200 Reini Urban <rurban@cpanel.net>
  226     Version 3.01c
  227 
  228         * Added warn_security("Movable-Type CVE-2015-1592 Storable metasploit attack")
  229           when detecting the third destructive metasploit vector,
  230           thawing bless \"mt-config.cgi", "CGITempFile".
  231 
  232 Thu Mar 31 17:10:27 2016 +0200 Reini Urban <rurban@cpanel.net>
  233     Version 3.00c
  234 
  235         * Added support for u64 strings, arrays and hashes >2G
  236           via a new LOBJECT tag. This is for 32bit systems and lengths
  237           between 2GB and 4GB (I32-U32), and 64bit (>I32).
  238         * Bumped STORABLE_BIN_MINOR and STORABLE_BIN_WRITE_MINOR from 10 to 11
  239         * fix parallel tests, use unique filenames.
  240         * fixed 2 instances of 2arg open,
  241         * added optional flag arguments to skip tie and bless on retrieve/thaw,
  242         * added SECURITY WARNING and Large data support to docs
  243         * compute CAN_FLOCK at compile-time
  244         * reformat everything consistently
  245         * enable DEBUGME tracing and asserts with -DDEBUGGING
  246         * fix all 64 bit compiler warnings
  247         * added some abstraction methods to avoid code duplication
  248 
  249 ?????? p5p <perl5-porters@perl.org>
  250     Version 2.65
  251 
  252 	* Replace multiple 'use vars' by 'our'
  253 	* remove Config dependency
  254 
  255 Wed Jul  2 16:25:25 IST 2014   Abhijit Menon-Sen <ams@toroid.org>
  256     Version 2.51
  257 
  258 	* [perl #121928] Fix memory leak for dclone inside freeze hook
  259 	  (Alex Solovey)
  260 	* Do not call DESTROY for empty objects
  261 	  (Vladimir Timofeev)
  262 	* Other bugfixes
  263 
  264 Sat Jul 13 18:34:27 IST 2013   Abhijit Menon-Sen <ams@toroid.org>
  265     Version 2.45
  266 
  267        * [perl #118829] Memory leaks in STORABLE_attach
  268          (Vladimir Timofeev)
  269        * [perl #118139] Don't SEGV during global destruction
  270          (Nicholas Clark, report/test from Reini Urban)
  271        * Added security warnings section (Steffen Mueller)
  272        * Update INSTALLDIRS to favour installation in 'site'
  273          (James E Keenan)
  274 
  275 Tue 11 Sep 06:51:11 IST 2012   Abhijit Menon-Sen <ams@toroid.org>
  276     Version 2.39
  277 
  278 	Various bugfixes, including compatibility fixes for older
  279 	versions of Perl and vstring handling.
  280 
  281 Sun  3 Jul 09:10:11 IST 2011   Abhijit Menon-Sen <ams@toroid.org>
  282     Version 2.29
  283 
  284 	Various bugfixes, notably including preventing nfreeze from
  285 	incorrectly stringifying integers.
  286 
  287 Fri  3 Dec 14:12:32 GMT 2010   David Leadbeater <dgl@dgl.cx>
  288     Version 2.25
  289 
  290 	Support for serializing coderefs containing UTF-8.
  291 
  292 Fri Nov 12 10:52:19 IST 2010   Abhijit Menon-Sen <ams@toroid.org>
  293 
  294     Version 2.24
  295 
  296 	Performance improvement for overloaded classes from Benjamin
  297 	Holzman.
  298 
  299 Fri Nov 12 10:36:22 IST 2010   Abhijit Menon-Sen <ams@toroid.org>
  300 
  301     Version 2.23
  302 
  303 	Release the latest version from the Perl repository.
  304 
  305 Thu Aug  6 10:55:50 IST 2009   Abhijit Menon-Sen <ams@toroid.org>
  306 
  307     Version 2.21
  308 
  309 	Includes hints/hpux.pl that was inadvertently left out of 2.20.
  310 
  311 Mon May 18 09:38:20 IST 2009   Abhijit Menon-Sen <ams@toroid.org>
  312 
  313     Version 2.20
  314 
  315 	Fix bug handling blessed references to overloaded objects, plus
  316 	other miscellaneous fixes.
  317 
  318 	(Version 2.19 was released with 5.8.9.)
  319 
  320 Thu Nov 22 13:24:18 IST 2007   Abhijit Menon-Sen <ams@toroid.org>
  321 
  322     Version 2.18
  323 
  324 	Compile fixes for older Perls. (No functional changes.)
  325 
  326 Sat Nov 17 02:12:12 IST 2007   Abhijit Menon-Sen <ams@toroid.org>
  327 
  328     Version 2.17
  329 
  330 	Various broken tests fixed. (No functional changes.)
  331 
  332 Sat Mar 31 06:11:06 IST 2007   Abhijit Menon-Sen <ams@toroid.org>
  333 
  334     Version 2.16
  335 
  336         1. Fixes to Storable::dclone, read_magic, retrieve_lscalar
  337         2. Storable 0.1 compatibility
  338         3. Miscellaneous compile/leak/test/portability fixes
  339 
  340 Mon May 23 22:48:49 IST 2005   Abhijit Menon-Sen <ams@wiw.org>
  341 
  342     Version 2.15
  343 
  344         Minor changes to address a couple of compile problems.
  345 
  346 Mon Apr 25 07:29:14 IST 2005   Abhijit Menon-Sen <ams@wiw.org>
  347 
  348     Version 2.14
  349 
  350 	1. Store weak references
  351 	2. Add STORABLE_attach hook.
  352 
  353 Thu Jun 17 12:26:43 BST 2004   Nicholas Clark <nick@ccl4.org>
  354 
  355     Version 2.13
  356 
  357         1. Don't change the type of top level overloaded references to RV -
  358 	   they are perfectly correct as PVMG
  359 	2. Storable needs to cope with incoming frozen data that happens to be
  360 	   utf8 encoded.
  361 
  362 Wed Mar 17 15:40:29 GMT 2004   Nicholas Clark <nick@ccl4.org>
  363 
  364     Version 2.12
  365 
  366         1. Add regression tests for the auto-require of STORABLE_thaw
  367         2. Add auto-require of modules to restore overloading (and tests)
  368         3. Change to no context (should give speedup with ithreads)
  369 
  370 Sat Mar 13 20:11:03 GMT 2004   Nicholas Clark <nick@ccl4.org>
  371 	
  372     Version 2.11
  373 
  374         1. Storing restricted hashes in canonical order would SEGV. Fixed.
  375         2. It was impossible to retrieve references to PL_sv_no and
  376            PL_sv_undef from STORABLE_thaw hooks.
  377         3. restrict.t was failing on 5.8.0, due to 5.8.0's unique
  378            implementation of restricted hashes using PL_sv_undef
  379         4. These changes allow a space optimisation for restricted hashes.
  380 
  381 Sat Jan 24 16:22:32 IST 2004   Abhijit Menon-Sen <ams@wiw.org>
  382 
  383     Version 2.10
  384 
  385         1. Thread safety: Storable::CLONE/init_perlinterp() now create
  386            a new Perl context for each new ithread.
  387            (From Stas Bekman and Jan Dubois.)
  388         2. Fix a tag count mismatch with $Storable::Deparse that caused
  389            all back-references after a stored sub to be off-by-N (where
  390            N was the number of code references in between).
  391            (From Sam Vilain.)
  392         3. Prevent CODE references from turning into SCALAR references.
  393            (From Slaven Rezic.)
  394 
  395 Sat Jan  3 18:49:18 GMT 2004   Nicholas Clark <nick@ccl4.org>
  396 
  397     Version 2.09
  398 
  399 	Fix minor problems with the CPAN release
  400 	1: Make Storable.xs work on 5.8.2 and later (already in the core)
  401 	2: Ship the linux hints file
  402 	3: Ship Test::More for the benefit of Perls pre 5.6.2
  403 	4: Correct Makefile.PL to only install in core for 5.8.0 and later
  404 
  405 Sat Sep  6 01:08:20 IST 2003   Abhijit Menon-Sen <ams@wiw.org>
  406 
  407     Version 2.08
  408 
  409         This release works around a 5.8.0 bug which caused hashes to not
  410         be marked as having key flags even though an HEK had HEK_WASUTF8
  411         set. (Note that the only reasonable solution is to silently drop
  412         the flag from the affected key.)
  413 
  414         Users of RT 3 who were seeing assertion failures should upgrade.
  415         (Perl 5.8.1 will have the bug fixed.)
  416 
  417 Mon May  5 10:24:16 IST 2003   Abhijit Menon-Sen <ams@wiw.org>
  418 
  419     Version 2.07
  420 
  421         Minor bugfixes (self-tied objects are now correctly stored, as
  422         are the results of additions larger than INT_MAX).
  423 
  424 Mon Oct  7 21:56:38 BST 2002   Nicholas Clark  <nick@ccl4.org>
  425 
  426     Version 2.06
  427 
  428 	Remove qr// from t/downgrade.t so that it will run on 5.004
  429 	Mention $File::Spec::VERSION a second time in t/forgive.t so that it
  430 	runs without warnings in 5.004 (this may be a 5.00405 bug I'm working
  431 	round)
  432 	Fix t/integer.t initialisation to actually generate 64 bits of 9c
  433 	Fix comparison tests to use eval to get around 64 bit IV conversion
  434 	issues on 5.6.x, following my t/integer.t ^ precedence bug found by
  435 	Rafael Garcia-Suarez
  436 	Alter t/malice.t to work with Test/More.pm in t/, and skip individual
  437 	subtests that use $Config{ptrsize}, so that the rest of the test can
  438 	now be run with 5.004
  439 	Change t/malice.t and the error message in check_magic in Storable.xs
  440 	from "Pointer integer size" to "Pointer size"
  441 	Remove prerequisite of Test::More from Makefile.PL
  442 	Ship Test::Builder, Test::Simple and Test::More in t
  443 
  444 Thu Oct  3 08:57:22 IST 2002   Abhijit Menon-Sen <ams@wiw.org>
  445 
  446     Version 2.05
  447 
  448         Adds support for CODE references from Slaven Rezic
  449         <slaven.rezic@berlin.de>.
  450 
  451 Fri Jun  7 23:55:41 BST 2002   Nicholas Clark
  452 
  453     Version 2.04
  454 
  455 	Bug fix from Radu Greab <radu@netsoft.ro> (plus regression test)
  456 	to fix a recently introduced bug detected by Dave Rolsky.
  457 	Bug was that for a non threaded build, the class information was
  458 	being lost at freeze time on the first object with a STORABLE_freeze
  459 	hook. Consequentially the object was not blessed at all when thawed.
  460 	(The presence (or lack) of STORABLE_thaw was irrelevant; this was
  461 	a store-time data lost bug, caused by failure to initialize internal
  462 	context)
  463 	The bug was introduced as development perl change 16442 (on
  464 	2002/05/07), so has been present since 2.00.
  465 	Patches to introduce more regression tests to reduce the chance of
  466 	a reoccurrence of this sort of goof are always welcome.
  467 	
  468 Thu May 30 20:31:08 BST 2002   Nicholas Clark <nick@ccl4.org>
  469 
  470     Version 2.03        Header changes on 5.6.x on Unix where IV is long long
  471 
  472         5.6.x introduced the ability to have IVs as long long.  However,
  473         Configure still defined BYTEORDER based on the size of a long.
  474         Storable uses the BYTEORDER value as part of the header, but
  475         doesn't explicitly store sizeof(IV) anywhere in the header.
  476         Hence on 5.6.x built with IV as long long on a platform that
  477         uses Configure (ie most things except VMS and Windows) headers
  478         are identical for the different IV sizes, despite the files
  479         containing some fields based on sizeof(IV)
  480 
  481         5.8.0 is consistent; all platforms have BYTEORDER in config.h
  482         based on sizeof(IV) rather than sizeof(long).  This means that
  483         the value of BYTEORDER will change from (say) 4321 to 87654321
  484         between 5.6.1 and 5.8.0 built with the same options to Configure
  485         on the same machine.  This means that the Storable header will
  486         differ, and the two versions will wrongly thing that they are
  487         incompatible.
  488 
  489         For the benefit of long term consistency, Storable now
  490         implements the 5.8.0 BYTEORDER policy on 5.6.x.  This means that
  491         2.03 onwards default to be incompatible with 2.02 and earlier
  492         (ie the large 1.0.x installed base) on the same 5.6.x perl.
  493 
  494         To allow interworking, a new variable
  495         $Storable::interwork_56_64bit is introduced. It defaults to
  496         false. Set it to true to read and write old format files. Don't
  497         use it unless you have existing stored data written with 5.6.x
  498         that you couldn't otherwise read, or you need to interwork with
  499         a machine running older Storable on a 5.6.x with long long IVs
  500         (i.e., you probably don't need to use it).
  501 
  502 Sat May 25 22:38:39 BST 2002   Nicholas Clark <nick@ccl4.org>
  503 
  504     Version 2.02
  505                 
  506         Rewrite Storable.xs so that the file header structure for write_magic
  507         is built at compile time, and check_magic attempts to the header in
  508         blocks rather than byte per byte. These changes make the compiled
  509         extension 2.25% smaller, but are not significant enough to give a
  510         noticeable speed up.
  511 
  512 Thu May 23 22:50:41 BST 2002   Nicholas Clark <nick@ccl4.org>
  513 
  514     Version 2.01
  515 
  516         - New regression tests integer.t
  517         - Add code to safely store large unsigned integers.
  518         - Change code not to attempt to store large integers (ie > 32 bits)
  519           in network order as 32 bits.
  520         
  521         *Never* underestimate the value of a pathological test suite carefully
  522         crafted with maximum malice before writing a line of real code. It
  523         prevents crafty bugs from stowing away in your released code.
  524         It's much less embarrassing to find them before you ship.
  525         (Well, never underestimate it if you ever want to work for me)
  526         
  527 Fri May 17 22:48:59 BST 2002   Nicholas Clark <nick@ccl4.org>
  528 
  529     Version 2.0, binary format 2.5 (but writes format 2.4 on pre 5.7.3)
  530 
  531         The perl5 porters have decided to make sure that Storable still
  532         builds on pre-5.8 perls, and make the 5.8 version available on CPAN.
  533         The VERSION is now 2.0, and it passes all tests on 5.005_03, 5.6.1
  534         and 5.6.1 with threads. On 5.6.0 t/downgrade.t fails tests 34 and 37,
  535         due to a bug in 5.6.0 - upgrade to 5.6.1.
  536 
  537         Jarkko and I have collated the list of changes the perl5 porters have
  538         from the perl5 Changes file:
  539 
  540         - data features of upcoming perl 5.8.0 are supported: Unicode hash
  541           keys (Unicode hash values have been supported since Storable 1.0.1)
  542           and "restricted hashes" (readonly hashes and hash entries)
  543         - a newer version of perl can now be used to serialize data which is
  544           not supported in earlier perls: Storable will attempt to do the
  545           right thing for as long as possible, croaking only when safe data
  546           conversion simply isn't possible. Alternatively earlier perls can
  547           opt to have a lossy downgrade data instead of croaking
  548         - when built with perls pre 5.7.3 this Storable writes out files
  549           with binary format 2.4, the same format as Storable 1.0.8 onwards.
  550           This should mean that this Storable will inter-operate seamlessly
  551           with any Storable 1.0.8 or newer on perls pre 5.7.3
  552         - dclone() now works with empty string scalar objects
  553         - retrieving of large hashes is now more efficient
  554         - more routines autosplit out of the main module, so Storable should
  555           load slightly more quickly
  556         - better documentation
  557         - the internal context objects are now freed explicitly, rather than
  558           relying on thread or process exit
  559         - bugs fixed in debugging trace code affecting builds made with 64 bit
  560           IVs
  561         - code tidy-ups to allow clean compiles with more warning options
  562           turned on avoid problems with $@ getting corrupted on 5.005_03 if
  563           Carp wasn't already loaded
  564         - added &show_file_magic, so you can add to /etc/magic and teach
  565           Unix's file command about Storable files
  566 
  567         We plan to keep Storable on CPAN in sync with the Perl core, so
  568         if you encounter bugs or other problems building or using Storable,
  569         please let us know at perl5-porters@perl.org
  570         Patches welcome!
  571         
  572 Sat Dec  1 14:37:54 MET 2001   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  573 
  574         This is the LAST maintenance release of the Storable module.
  575         Indeed, Storable is now part of perl 5.8, and will be maintained
  576         as part of Perl.  The CPAN module will remain available there
  577         for people running pre-5.8 perls.
  578 
  579         Avoid requiring Fcntl upfront, useful to embedded runtimes.
  580         Use an eval {} for testing, instead of making Storable.pm
  581         simply fail its compilation in the BEGIN block.
  582 
  583         store_fd() will now correctly autoflush file if needed.
  584 
  585 Tue Aug 28 23:53:20 MEST 2001   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  586 
  587         Fixed truncation race with lock_retrieve() in lock_store().
  588         The file has to be truncated only once the exclusive lock is held.
  589 
  590         Removed spurious debugging messages in .xs file.
  591 
  592 Sun Jul  1 13:27:32 MEST 2001   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  593 
  594         Systematically use "=over 4" for POD linters.
  595         Apparently, POD linters are much stricter than would
  596         otherwise be needed, but that's OK.
  597 
  598         Fixed memory corruption on croaks during thaw().  Thanks
  599         to Claudio Garcia for reproducing this bug and providing the
  600         code to exercise it.  Added test cases for this bug, adapted
  601         from Claudio's code.
  602 
  603         Made code compile cleanly with -Wall (from Jarkko Hietaniemi).
  604 
  605         Changed tagnum and classnum from I32 to IV in context.  Also
  606         from Jarkko.
  607 
  608 Thu Mar 15 01:22:32 MET 2001   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  609 
  610         Last version was wrongly compiling with assertions on, due
  611         to an edit glitch.  That did not cause any problem (apart from
  612         a slight performance loss) excepted on Win* platforms, where the
  613         assertion code does not compile.
  614 
  615 Sat Feb 17 13:37:37 MET 2001   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  616 
  617     Version 1.0.10.
  618 
  619         Forgot to increase version number at previous patch (there were
  620         two of them, which is why we jump from 1.0.8 to 1.0.10).
  621 
  622 Sat Feb 17 13:35:00 MET 2001   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  623 
  624     Version 1.0.8, binary format 2.4.
  625 
  626         Fixed incorrect error message.
  627 
  628         Now bless objects ASAP at retrieve time, which is meant to fix
  629         two bugs:
  630 
  631         * Indirect references to overloaded object were not able to
  632           restore overloading if the object was not blessed yet,
  633           which was possible since blessing occurred only after the
  634           recursive retrieval.
  635 
  636         * Storable hooks asking for serialization of blessed ref could
  637           get un-blessed refs at retrieval time, for the very same
  638           reason.
  639 
  640         The fix implemented here was suggested by Nick Ing-Simmons.
  641 
  642         Added support for blessed ref to tied structures.  This is the
  643         cause for the binary format change.
  644 
  645         Added EBCDIC version of the compatibility test with 0.6.11,
  646         from Peter Prymmer
  647 
  648         Added tests for the new features, and to make sure the bugs they
  649         are meant to fix are indeed fixed.
  650 
  651 Wed Jan  3 10:43:18 MET 2001   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  652 
  653         Removed spurious 'clean' entry in Makefile.PL.
  654 
  655         Added CAN_FLOCK to determine whether we can flock() or not,
  656         by inspecting Perl's configuration parameters, as determined
  657         by Configure.
  658 
  659         Trace offending package when overloading cannot be restored
  660         on a scalar.
  661 
  662         Made context cleanup safer to avoid dup freeing, mostly in the
  663         presence of repeated exceptions during store/retrieve (which can
  664         cause memory leaks anyway, so it's just additional safety, not a
  665         definite fix).
  666 
  667 Sun Nov  5 18:23:48 MET 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  668 
  669     Version 1.0.6.
  670 
  671         Fixed severe "object lost" bug for STORABLE_freeze returns,
  672         when refs to lexicals, taken within the hook, were to be
  673         serialized by Storable.  Enhanced the t/recurse.t test to
  674         stress hook a little more with refs to lexicals.
  675 
  676 Thu Oct 26 19:14:38 MEST 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  677 
  678     Version 1.0.5.
  679 
  680         Documented that store() and retrieve() can return undef.
  681         That is, the error reporting is not always made via exceptions,
  682         as the paragraph on error reporting was implying.
  683 
  684         Auto requires module of blessed ref when STORABLE_thaw misses.
  685         When the Storable engine looks for the STORABLE_thaw hook and
  686         does not find it, it now tries to require the package into which
  687         the blessed reference is.
  688 
  689         Just check $^O, in t/lock.t: there's no need to pull the whole
  690         Config module for that.
  691 
  692 Mon Oct 23 20:03:49 MEST 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  693 
  694     Version 1.0.4.
  695 
  696         Protected calls to flock() for DOS platform: apparently, the
  697         flock/fcnlt emulation is reported to be broken on that
  698         platform.
  699 
  700         Added logcarp emulation if they don't have Log::Agent, since
  701         we now use it to carp when lock_store/lock_retrieve is used
  702         on DOS.
  703 
  704 Fri Sep 29 21:52:29 MEST 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  705 
  706     Version 1.0.3.
  707 
  708         Avoid using "tainted" and "dirty" since Perl remaps them via
  709         cpp (i.e. #define).  This is deeply harmful when threading
  710         is enabled.  This concerned both the context structure and
  711         local variable and argument names.  Brrr..., scary!
  712 
  713 Thu Sep 28 23:46:39 MEST 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  714 
  715     Version 1.0.2.
  716 
  717         Fixed spelling in README.
  718 
  719         Added lock_store, lock_nstore, and lock_retrieve (advisory locking)
  720         after a proposal from Erik Haugan <erik@solbors.no>.
  721 
  722         Perls before 5.004_04 lack newSVpvn, added remapping in XS.
  723 
  724         Fixed stupid typo in the t/utf8.t test.
  725 
  726 Sun Sep 17 18:51:10 MEST 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  727 
  728     Version 1.0.1, binary format 2.3.
  729 
  730         Documented that doubles are stored stringified by nstore().
  731 
  732         Added Salvador Ortiz Garcia in CREDITS section,  He identified
  733         a bug in the store hooks and proposed the right fix: the class
  734         id was allocated too soon.  His bug case was also added to
  735         the regression test suite.
  736 
  737         Now only taint retrieved data when source was tainted.  A bug
  738         discovered by Marc Lehmann.
  739 
  740         Added support for UTF-8 strings, a contribution of Marc Lehmann.
  741         This is normally only activated in post-5.6 perls.
  742 
  743 Thu Aug 31 23:06:06 MEST 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  744 
  745         First official release Storable 1.0, for inclusion in perl 5.7.0.
  746         The license scheme is now compatible with Perl's.
  747 
  748 Thu Aug 24 01:02:02 MEST 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  749 
  750         ANSI-fied most of the code, preparing for Perl core integration.
  751         The next version of Storable will be 0.8, and will be integrated
  752         into the Perl core (development branch).
  753 
  754         Dispatch tables were moved upfront to relieve some compilers,
  755         especially on AIX and Windows platforms.
  756 
  757         Merged 64-bit fixes from perl5-porters.
  758 
  759 Mon Aug 14 09:22:04 MEST 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  760 
  761         Added a refcnt dec in retrieve_tied_key(): sv_magic() increases
  762         the refcnt on the mg_ptr as well.
  763 
  764         Removed spurious dependency to Devel::Peek, which was used for
  765         testing only in t/tied_items.t.  Thanks to Conrad Heiney
  766         <conrad@fringehead.org> for spotting it first.
  767 
  768 Sun Aug 13 22:12:59 MEST 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  769 
  770         Marc Lehmann kindly contributed code to add overloading support
  771         and to handle references to tied variables.
  772 
  773         Rewrote leading blurb about compatibility to make it clearer what
  774         "backward compatibility" is about: when I say 0.7 is backward
  775         compatible with 0.6, it means the revision 0.7 can read files
  776         produced by 0.6.
  777 
  778         Mention new Clone(3) extension in SEE ALSO.
  779 
  780         Was wrongly optimizing for "undef" values in hashes by not
  781         fully recursing: as a result, tied "undef" values were incorrectly
  782         serialized.
  783 
  784 Sun Jul 30 12:59:17 MEST 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  785 
  786     First revision of Storable 0.7.
  787 
  788         The serializing format is new, known as version 2.0.  It is fully
  789         backward compatible with 0.6.  Earlier formats are deprecated and
  790         have not even been tested: next version will drop pre-0.6 format.
  791 
  792         Changes since 0.6@11:
  793 
  794         - Moved interface to the "beta" status.  Some tiny parts are still
  795           subject to change, but nothing important enough to warrant an "alpha"
  796           status any longer.
  797 
  798         - Slightly reduced the size of the Storable image by factorizing
  799           object class names and removing final object storage notification due
  800           to a redesign of the blessed object storing.
  801 
  802         - Classes can now redefine how they wish their instances to be serialized
  803           and/or deep cloned.  Serializing hooks are written in Perl code.
  804 
  805         - The engine is now fully re-entrant.
  806 
  807 Sun Apr  2 23:47:50 MEST 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  808 
  809         Added provision to detect more recent binary formats, since
  810         the new upcoming Storable-0.7 will use a different format.
  811         In order to prevent attempting the de-serialization of newer
  812         formats by older versions, I'm adding this now to the 0.6 series.
  813 
  814         I'm expecting this revision to be the last of the 0.6 series.
  815         Unless it does not work with perl 5.6, which I don't use yet,
  816         and therefore against which I cannot test.
  817 
  818 Wed Mar 29 19:55:21 MEST 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  819 
  820         Added note about format incompatibilities with old versions
  821         (i.e. pre 0.5@9 formats, which cannot be understood as there
  822         was no versionning information in the file by then).
  823 
  824         Protect all $@ variables when eval {} used, to avoid corrupting
  825         it when store/retrieve is called within an exception handler.
  826 
  827         Mistakenly included "patchlevel.h" instead of <patchlevel.h>,
  828         preventing Perl's patchlevel from being included, which is
  829         needed starting from 5.6.
  830 
  831 Tue May 12 09:15:15 METDST 1998   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
  832 
  833         Fixed shared "undef" bug in hashes, which did not remain shared
  834         through store/retrieve.
  835 
  836 Thu Feb 10 19:48:16 MET 2000   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  837 
  838         added last_op_in_netorder() predicate
  839         documented last_op_in_netorder()
  840         added tests for the new last_op_in_netorder() predicate
  841 
  842 Wed Oct 20 19:07:36 MEST 1999   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  843 
  844         Forgot to update VERSION
  845 
  846 Tue Oct 19 21:25:02 MEST 1999   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  847 
  848         Added mention of japanese translation for the manual page.
  849 
  850         Fixed typo in macro that made threaded code not compilable,
  851         especially on Win32 platforms.
  852 
  853         Changed detection of older perls (pre-5.005) by testing PATCHLEVEL
  854         directly instead of relying on internal symbols.
  855 
  856 Tue Sep 14 22:13:28 MEST 1999   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  857 
  858         Integrated "thread-safe" patch from Murray Nesbitt.
  859         Note that this may not be very efficient for threaded code,
  860         see comment in the code.
  861 
  862         Try to avoid compilation warning on 64-bit CPUs. Can't test it,
  863         since I don't have access to such machines.
  864 
  865 Mon Jul 12 14:37:19 METDST 1999   Raphael Manfredi <Raphael_Manfredi@pobox.com>
  866 
  867         changed my e-mail to pobox.
  868 
  869         mentioned it is not thread-safe.
  870 
  871         updated version number.
  872 
  873         uses new internal PL_* naming convention.
  874 
  875 Fri Jul  3 13:38:16 METDST 1998   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
  876 
  877         Updated benchmark figures due to recent optimizations done in
  878         store(): tagnums are now stored as-is in the hash table, so
  879         no surrounding SV is created. And the "shared keys" mode for
  880         hash table was turned off.
  881 
  882         Fixed backward compatibility (wrt 0.5@9) for retrieval of
  883         blessed refs. That old version did something wrong, but the
  884         bugfix prevented correct retrieval of the old format.
  885 
  886 Mon Jun 22 11:00:48 METDST 1998   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
  887 
  888         Changed benchmark figures.
  889 
  890         Adjust refcnt of tied objects after calling sv_magic() to avoid
  891         memory leaks.  Contributed by Jeff Gresham.
  892 
  893 Fri Jun 12 11:50:04 METDST 1998   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
  894 
  895         Added workaround for persistent LVALUE-ness in perl5.004. All
  896         scalars tagged as being an lvalue are handled as if they were
  897         not an lvalue at all.  Added test for that LVALUE bug workaround.
  898 
  899         Now handles Perl immortal scalars explicitly, by storing &sv_yes
  900         as such, explicitly.
  901 
  902         Retrieval of non-immortal undef cannot be shared. Previous
  903         version was over-optimizing by not creating a separate SV for
  904         all undefined scalars seen.
  905 
  906 Thu Jun  4 17:21:51 METDST 1998   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
  907 
  908     Baseline for Storable-0.6@0.
  909 
  910         This version introduces a binary incompatibility in the generated
  911         binary image, which is more compact than older ones by approximatively
  912         15%, depending on the exact degree of sharing in your structures.
  913 
  914         The good news is that your older images can still be retrieved with
  915         this version, i.e. backward compatibility is preserved. This version
  916         of Storable can only generate new binaries however.
  917 
  918         Another good news is that the retrieval of data structure is
  919         significantly quicker than before, because a Perl array is used
  920         instead of a hash table to keep track of retrieved objects, and
  921         also because the image being smaller, less I/O function calls are
  922         made.
  923 
  924 Tue May 12 09:15:15 METDST 1998   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
  925 
  926         Version number now got from Storable.pm directly.
  927 
  928         Fixed overzealous sv_type() optimization, which would make
  929         Storable fail when faced with an "upgraded" SV to the PVIV
  930         or PVNV kind containing a reference.
  931 
  932 Thu Apr 30 15:11:30 METDST 1998   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
  933 
  934         Extended the SYNOPSIS section to give quick overview of the
  935         routines and their signature.
  936 
  937         Optimized sv_type() to avoid flags checking when not needed, i.e.
  938         when their type makes it impossible for them to be refs or tied.
  939         This slightly increases throughput by a few percents when refs
  940         and tied variables are marginal occurrences in your data.
  941 
  942         Stubs for XS now use OutputStream and InputStream file types to
  943         make it work when the given file is actually a socket. Perl
  944         makes a distinction for sockets in its internal I/O structures
  945         by having both a read and a write structure, whereas plain files
  946         share the same one.
  947 
  948 Tue Jun  3 09:41:33 METDST 1997   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
  949 
  950         Thanks to a contribution from Benjamin A. Holzman, Storable is now
  951         able to correctly serialize tied SVs, i.e. tied arrays, hashes
  952         and scalars.
  953 
  954 Thu Apr  9 18:07:51 METDST 1998   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
  955 
  956         I said SvPOK() had changed to SvPOKp(), but that was a lie...
  957 
  958 Wed Apr  8 13:14:29 METDST 1998   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
  959 
  960         Wrote sizeof(SV *) instead of sizeof(I32) when portable, which
  961         in effect mangled the object tags and prevented portability
  962         across 32/64 bit architectures!
  963 
  964 Wed Mar 25 14:57:02 MET 1998   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
  965 
  966         Added code example for store_fd() and retrieve_fd() in the
  967         man page, to emphasize that file descriptors must be passed as
  968         globs, not as plain strings.
  969 
  970         Cannot use SV addresses as tag when using nstore() on LP64. This
  971         was the cause of problems when creating a storable image on an
  972         LP64 machine and retrieving it on an ILP32 system, which is
  973         exactly what nstore() is meant for...
  974 
  975         However, we continue to use SV addresses as tags for plain store(),
  976         because benchmarking shows that it saves up to 8% of the store
  977         time, and store() is meant to be fast at the expense of lack
  978         of portability.
  979 
  980         This means there will be approximately an 8% degradation of
  981         performance for nstore(), but it's now working as expected.
  982         That cost may vary on your machine of course, since it is
  983         solely caused by the memory allocation overhead used to create
  984         unique SV tags for each distinct stored SV.
  985 
  986 Tue Jan 20 09:21:53 MET 1998   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
  987 
  988         Don't use any '_' in version number.
  989 
  990 Tue Jan 13 17:51:50 MET 1998   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
  991 
  992         Updated version number.
  993 
  994         added binmode() calls for systems where it matters.
  995 
  996         Be sure to pass globs, not plain file strings, to C routines,
  997         so that Storable can be used under the Perl debugger.
  998 
  999 Wed Nov  5 10:53:22 MET 1997   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
 1000 
 1001         Fix memory leaks on seen hash table and returned SV refs.
 1002 
 1003         Storable did not work properly when tainting enabled.
 1004 
 1005         Fixed "Allocation too large" messages in freeze/thaw and added.
 1006         proper regression test in t/freeze.t.
 1007 
 1008 Tue Jun  3 09:41:33 METDST 1997   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
 1009 
 1010         Updated version number
 1011 
 1012         Added freeze/thaw interface and dclone.
 1013 
 1014 Fri May 16 10:45:47 METDST 1997   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
 1015 
 1016         Forgot that AutoLoader does not export its own AUTOLOAD.
 1017         I could use
 1018 
 1019                 use AutoLoader 'AUTOLOAD';
 1020         
 1021         but that would not be backward compatible. So the export is
 1022         done by hand...
 1023 
 1024 Tue Mar 25 11:21:32 MET 1997   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
 1025 
 1026         Empty scalar strings are now "defined" at retrieval time.
 1027 
 1028         New test to ensure an empty string is defined when retrieved.
 1029 
 1030 Thu Feb 27 16:32:44 MET 1997   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
 1031 
 1032         Updated version number
 1033 
 1034         Declare VERSION as being used
 1035 
 1036         Fixed a typo in the PerlIO_putc remapping.
 1037         PerlIO_read and perlIO_write inverted size/nb_items.
 1038         (only relevant for pre-perl5.004 versions)
 1039 
 1040 Thu Feb 27 15:58:31 MET 1997   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
 1041 
 1042         Updated version number
 1043 
 1044         Added VERSION identification
 1045 
 1046         Allow build with perl5.003, which is ante perlIO time
 1047 
 1048 Mon Jan 13 17:53:18 MET 1997   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
 1049 
 1050         Random code fixes.
 1051 
 1052 Wed Jan 22 15:19:56 MET 1997   Raphael Manfredi <Raphael_Manfredi@grenoble.hp.com>
 1053 
 1054         Updated version number in Makefile.PL.
 1055 
 1056         Added "thanks to" section to README.
 1057 
 1058         Documented new forgive_me variable.
 1059 
 1060         Made 64-bit clean.
 1061 
 1062         Added forgive_me support to allow store() of data structures
 1063         containing non-storable items like CODE refs.