This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Jarkko Hietaniemi [Fri, 28 Apr 2000 21:08:12 +0000 (21:08 +0000)]
Integrate with Sarathy.
p4raw-id: //depot/cfgperl@6012
Jarkko Hietaniemi [Fri, 28 Apr 2000 21:04:46 +0000 (21:04 +0000)]
&HUGE_VAL is not defined, it exists.
p4raw-id: //depot/cfgperl@6011
Gurusamy Sarathy [Fri, 28 Apr 2000 21:02:58 +0000 (21:02 +0000)]
clarify note about shadow password support (from
gellyfish@gellyfish.com)
p4raw-id: //depot/perl@6010
Gurusamy Sarathy [Fri, 28 Apr 2000 21:00:00 +0000 (21:00 +0000)]
IO::Poll bugs fixed (from Lincoln Stein <lstein@cshl.org>)
p4raw-id: //depot/perl@6009
Gurusamy Sarathy [Fri, 28 Apr 2000 20:56:33 +0000 (20:56 +0000)]
VMS config tweak (from Craig A. Berry <craig.berry@metamorgs.com>)
p4raw-id: //depot/perl@6008
Gurusamy Sarathy [Fri, 28 Apr 2000 20:51:21 +0000 (20:51 +0000)]
note about compile failures and END blocks (from M.J.T. Guy)
p4raw-id: //depot/perl@6007
Jarkko Hietaniemi [Fri, 28 Apr 2000 20:42:14 +0000 (20:42 +0000)]
Regen Configure.
p4raw-id: //depot/cfgperl@6006
Gurusamy Sarathy [Fri, 28 Apr 2000 20:41:16 +0000 (20:41 +0000)]
perldoc might fail via "use blib" (from Hugo van der Sanden)
p4raw-id: //depot/perl@6005
Jarkko Hietaniemi [Fri, 28 Apr 2000 20:28:21 +0000 (20:28 +0000)]
Integrate with Sarathy.
p4raw-id: //depot/cfgperl@6004
Gurusamy Sarathy [Fri, 28 Apr 2000 20:11:20 +0000 (20:11 +0000)]
allow REG_EXPAND_SZ keys in Windows registry (from
John Clayton <John.Clayton@barclayscapital.com>)
p4raw-id: //depot/perl@6003
Gurusamy Sarathy [Fri, 28 Apr 2000 19:34:16 +0000 (19:34 +0000)]
destructive sv_setsv() can lose UV-ness from source, causing
numeric promotions/comparisons to fail to do the right thing
p4raw-id: //depot/perl@6002
Gurusamy Sarathy [Fri, 28 Apr 2000 18:44:15 +0000 (18:44 +0000)]
support additional library locations via $Config{otherlibdirs}
(from Andy Dougherty)
p4raw-id: //depot/perl@6001
Gurusamy Sarathy [Fri, 28 Apr 2000 18:17:07 +0000 (18:17 +0000)]
fix line renumbering bug in C<eval qq[#line 10 "X"\nwarn]>
p4raw-id: //depot/perl@5999
Jarkko Hietaniemi [Fri, 28 Apr 2000 13:32:17 +0000 (13:32 +0000)]
Try to get "Inf" by using &POSIX::HUGE_VAL in sprintf.
p4raw-id: //depot/cfgperl@5998
Jarkko Hietaniemi [Fri, 28 Apr 2000 13:14:04 +0000 (13:14 +0000)]
Preserve $!.
p4raw-id: //depot/cfgperl@5997
Jarkko Hietaniemi [Fri, 28 Apr 2000 12:59:23 +0000 (12:59 +0000)]
Integrate with Sarathy.
p4raw-id: //depot/cfgperl@5996
Gurusamy Sarathy [Fri, 28 Apr 2000 09:37:36 +0000 (09:37 +0000)]
fixes for bugs in C<use warnings qw(FATAL all)> (from Paul Marquess)
p4raw-id: //depot/perl@5995
Gurusamy Sarathy [Fri, 28 Apr 2000 09:33:26 +0000 (09:33 +0000)]
fix for missed accounting for null byte in pack("Z",...) (from
M.J.T. Guy)
p4raw-id: //depot/perl@5994
Gurusamy Sarathy [Fri, 28 Apr 2000 09:30:05 +0000 (09:30 +0000)]
various minor tweaks seen on p5p
p4raw-id: //depot/perl@5993
Gurusamy Sarathy [Fri, 28 Apr 2000 09:08:19 +0000 (09:08 +0000)]
pod nit (from Simon Cozens)
p4raw-id: //depot/perl@5992
Gurusamy Sarathy [Fri, 28 Apr 2000 09:06:36 +0000 (09:06 +0000)]
posix-bc patches (from Dorner Thomas <Thomas.Dorner@start.de>)
p4raw-id: //depot/perl@5991
Gurusamy Sarathy [Fri, 28 Apr 2000 08:54:52 +0000 (08:54 +0000)]
use $ENV{LIB} to search for libs under Visual C compiler
on Windows (from Jochen Wiedmann <joe@ispsoft.de>)
p4raw-id: //depot/perl@5990
Gurusamy Sarathy [Fri, 28 Apr 2000 08:27:12 +0000 (08:27 +0000)]
qw(a\\b) must be parsed like 'a\\b', i.e., backslash escapes
itself and no other (from Tom Hughes)
p4raw-id: //depot/perl@5989
Gurusamy Sarathy [Fri, 28 Apr 2000 08:01:38 +0000 (08:01 +0000)]
s/HTMLSCRIPTPOD/HTMLSCRIPTPODS/ (from Paul Sharpe
<paul@miraclefish.com>)
p4raw-id: //depot/perl@5988
Gurusamy Sarathy [Fri, 28 Apr 2000 07:53:09 +0000 (07:53 +0000)]
B::Bytecode tweaks (from Simon Cozens <simon@brecon.co.uk>)
p4raw-id: //depot/perl@5987
Gurusamy Sarathy [Fri, 28 Apr 2000 07:44:17 +0000 (07:44 +0000)]
add regular expressions tutorial and quick-start guide (from
Mark Kvale <kvale@phy.ucsf.edu>)
p4raw-id: //depot/perl@5986
Gurusamy Sarathy [Fri, 28 Apr 2000 07:30:28 +0000 (07:30 +0000)]
forked child may not exit correctly if it failed to open
/dev/console (from Graham Barr)
p4raw-id: //depot/perl@5985
Gurusamy Sarathy [Fri, 28 Apr 2000 07:27:20 +0000 (07:27 +0000)]
attributes::reftype() doesn't work on tied argument
p4raw-id: //depot/perl@5984
Gurusamy Sarathy [Fri, 28 Apr 2000 07:15:04 +0000 (07:15 +0000)]
numeric conversion of non-number in change#3378 tramples on
OOK offset, causing segfaults
p4raw-link: @3378 on //depot/perl:
25da4f389200e19df8aa50bcef9af9506f48ed2e
p4raw-id: //depot/perl@5983
Gurusamy Sarathy [Fri, 28 Apr 2000 04:48:25 +0000 (04:48 +0000)]
avoid error in IO::Socket::INET when given an unknown service name
with a port number (from Brian Raven <brianr@ssprdmh01.liffe.com>)
p4raw-id: //depot/perl@5982
Gurusamy Sarathy [Fri, 28 Apr 2000 04:31:31 +0000 (04:31 +0000)]
rename File::Glob::glob() to File::Glob::bsd_glob() to avoid
prototype mismatch with CORE::glob(); update pod and tests to
suit (File::Glob::glob() is still available for backward
compatibility, but should be considered deprecated)
p4raw-id: //depot/perl@5981
Gurusamy Sarathy [Fri, 28 Apr 2000 03:47:29 +0000 (03:47 +0000)]
allow Configure -S to run non-interactively (spotted by Greg Hudson
<ghudson@mit.edu>)
p4raw-id: //depot/perl@5980
Gurusamy Sarathy [Fri, 28 Apr 2000 03:07:54 +0000 (03:07 +0000)]
under useithreads, constant pad entries could inadvertently be
shared across threads (from Eric Blood <eblood@xmission.com>);
added Eric's test case to testsuite
p4raw-id: //depot/perl@5979
Gurusamy Sarathy [Thu, 27 Apr 2000 21:13:00 +0000 (21:13 +0000)]
sync version numbers in File::Spec with the ones on CPAN
(from Barrie Slaymaker)
p4raw-id: //depot/perl@5978
Gurusamy Sarathy [Thu, 27 Apr 2000 21:07:29 +0000 (21:07 +0000)]
autoquote barewords followed by newline and arrow properly
(variant of fix suggested by Rick Delaney and M.J.T. Guy)
p4raw-id: //depot/perl@5977
Gurusamy Sarathy [Thu, 27 Apr 2000 20:41:20 +0000 (20:41 +0000)]
DB_File v1.73 update (from Paul Marquess)
p4raw-id: //depot/perl@5976
Gurusamy Sarathy [Thu, 27 Apr 2000 20:34:24 +0000 (20:34 +0000)]
allow sort() reentrancy (variant of patch suggested by
Hugo van der Sanden)
p4raw-id: //depot/perl@5975
Gurusamy Sarathy [Thu, 27 Apr 2000 19:46:57 +0000 (19:46 +0000)]
change#4197 somehow missed initializing PL_errors, meaning
sytax error queueing wasn't working outside eval"" at all;
also fixed eval"" to localize PL_error_count, so that compile-time
eval's don't clobber the error state of the outer context
p4raw-link: @4197 on //depot/perl:
5a844595b9262407e093364ec4d29a22962723f0
p4raw-id: //depot/perl@5974
Gurusamy Sarathy [Thu, 27 Apr 2000 18:29:05 +0000 (18:29 +0000)]
fix for failure to match $foo =~ /(?i)/ (from Ilya Zakharevich)
p4raw-id: //depot/perl@5973
Jarkko Hietaniemi [Thu, 27 Apr 2000 18:22:41 +0000 (18:22 +0000)]
Integrate with Sarathy.
p4raw-id: //depot/cfgperl@5972
Jarkko Hietaniemi [Thu, 27 Apr 2000 18:18:46 +0000 (18:18 +0000)]
Unicos tweaks from Mark P. Lutz.
p4raw-id: //depot/cfgperl@5971
Gurusamy Sarathy [Thu, 27 Apr 2000 18:05:11 +0000 (18:05 +0000)]
Data::Dumper fumbles negative numbers on 32-bit platforms where
IV is >32bits
p4raw-id: //depot/perl@5970
Gurusamy Sarathy [Thu, 27 Apr 2000 17:50:56 +0000 (17:50 +0000)]
fix Sys::Syslog breakage on domain sockets (from Tom Hughes)
p4raw-id: //depot/perl@5969
Gurusamy Sarathy [Thu, 27 Apr 2000 17:44:49 +0000 (17:44 +0000)]
tolerate spaces in group names in test on solaris (from David Boyce
<dsb@boyski.com>)
p4raw-id: //depot/perl@5968
Gurusamy Sarathy [Thu, 27 Apr 2000 17:41:22 +0000 (17:41 +0000)]
improved docs on the warn_uninit diagnostic (from David Glasser
and Simon Cozens)
p4raw-id: //depot/perl@5967
Gurusamy Sarathy [Thu, 27 Apr 2000 16:54:58 +0000 (16:54 +0000)]
add testsuite for B backends, fix bug in B::Deparse (from
Simon Cozens <simon@brecon.co.uk>)
p4raw-id: //depot/perl@5966
Gurusamy Sarathy [Thu, 27 Apr 2000 16:10:37 +0000 (16:10 +0000)]
avoid "will not stay shared" warnings for our variables (from
Robin Barker)
p4raw-id: //depot/perl@5965
Gurusamy Sarathy [Thu, 27 Apr 2000 07:05:05 +0000 (07:05 +0000)]
reformat to 72 columns (again)
p4raw-id: //depot/perl@5964
Gurusamy Sarathy [Thu, 27 Apr 2000 06:28:31 +0000 (06:28 +0000)]
patch from Larry to make (\&) prototype work; added tests for
the same
p4raw-id: //depot/perl@5963
Gurusamy Sarathy [Thu, 27 Apr 2000 06:15:47 +0000 (06:15 +0000)]
updated README.hpux (from Jeff Okamoto)
p4raw-id: //depot/perl@5962
Gurusamy Sarathy [Thu, 27 Apr 2000 05:55:03 +0000 (05:55 +0000)]
recognize our, CHECK and INIT in cperl-mode (from Doug MacEachern)
p4raw-id: //depot/perl@5961
Gurusamy Sarathy [Thu, 27 Apr 2000 05:49:26 +0000 (05:49 +0000)]
better INSTALL notes on Solaris issues (from Dominic Dunlop)
p4raw-id: //depot/perl@5960
Gurusamy Sarathy [Thu, 27 Apr 2000 05:33:41 +0000 (05:33 +0000)]
doubled words in pods (from Simon Cozens
<simon.p.cozens@jp.pwcglobal.com>)
p4raw-id: //depot/perl@5959
Gurusamy Sarathy [Thu, 27 Apr 2000 05:11:39 +0000 (05:11 +0000)]
change#3569 deleted some essential code, revert; avoid use of
atexit() to make DynaLoader work properly on AIX under mod_perl
(from Jens-Uwe Mager <jum@helios.de>)
p4raw-link: @3569 on //depot/perl:
054b02d6604bb3beeebed2d8a040d025b131c9a6
p4raw-id: //depot/perl@5958
Gurusamy Sarathy [Thu, 27 Apr 2000 04:54:51 +0000 (04:54 +0000)]
pod nits (from A. C. Yardley <yardley@tanet.net>)
p4raw-id: //depot/perl@5957
Gurusamy Sarathy [Thu, 27 Apr 2000 04:51:47 +0000 (04:51 +0000)]
better diagnostics on failed tests (from Ilya Zakharevich)
p4raw-id: //depot/perl@5956
Gurusamy Sarathy [Thu, 27 Apr 2000 04:26:44 +0000 (04:26 +0000)]
longstanding bug exposed by change#3307: sort arguments weren't
compiled with the right wantarray context (ensuing runtime lookup
via block_gimme() was getting the incidental context of the
sort() itself)
p4raw-link: @3307 on //depot/perl:
82092f1dcd6e496644fe74540fa706cb390be431
p4raw-id: //depot/perl@5955
Gurusamy Sarathy [Wed, 26 Apr 2000 23:42:12 +0000 (23:42 +0000)]
integrate cfgperl contents into mainline
p4raw-id: //depot/perl@5954
Jarkko Hietaniemi [Wed, 26 Apr 2000 23:06:42 +0000 (23:06 +0000)]
Integrate with Sarathy.
p4raw-id: //depot/cfgperl@5953
Jarkko Hietaniemi [Wed, 26 Apr 2000 23:03:46 +0000 (23:03 +0000)]
Undo "use integer" addition from 64bitint as it seems
to break most of the subtests in Digital UNIX;
Unicos needs to find another way.
p4raw-id: //depot/cfgperl@5952
Jarkko Hietaniemi [Wed, 26 Apr 2000 22:57:53 +0000 (22:57 +0000)]
Be more robust on "extreme" (large absolute value)
arguments. Originally reported by Daniel Connelly
as a problem with asinh() on large negative arguments,
asinh() used to bail out because an argument to log()
ended up being zero. Ilya Zakharevich proposed using
Taylor's series in such cases, which for such large
arguments is a very good approximation.
p4raw-id: //depot/cfgperl@5951
Gurusamy Sarathy [Tue, 25 Apr 2000 19:13:12 +0000 (19:13 +0000)]
reformat perldiag to avoid long lines
p4raw-id: //depot/perl@5950
Gurusamy Sarathy [Tue, 25 Apr 2000 18:41:11 +0000 (18:41 +0000)]
make perldoc use the pod2man from the same version (from
M.J.T. Guy)
p4raw-id: //depot/perl@5949
Gurusamy Sarathy [Tue, 25 Apr 2000 18:21:57 +0000 (18:21 +0000)]
typo in vars.pm that leads to cryptic message (from Piotr Piatkowski
<kompas@kompas.usr.onet.pl>)
p4raw-id: //depot/perl@5948
Gurusamy Sarathy [Tue, 25 Apr 2000 18:11:53 +0000 (18:11 +0000)]
use &dl_error rather than &dl_load_file as the guard for calling
boot_DynaLoader() (meant to fix dl_error() redefined warnings in
statically built perl)
p4raw-id: //depot/perl@5947
Jarkko Hietaniemi [Tue, 25 Apr 2000 17:37:54 +0000 (17:37 +0000)]
Document that tr() is not tr(1).
p4raw-id: //depot/cfgperl@5946
Gurusamy Sarathy [Tue, 25 Apr 2000 16:34:33 +0000 (16:34 +0000)]
make module name mandatory after -M switch; reorder perldiag
alphabetically (from Mark-Jason Dominus)
p4raw-id: //depot/perl@5945
Jarkko Hietaniemi [Tue, 25 Apr 2000 01:15:18 +0000 (01:15 +0000)]
On second thoughts frexp() does have two arguments.
p4raw-id: //depot/cfgperl@5944
Jarkko Hietaniemi [Mon, 24 Apr 2000 22:56:32 +0000 (22:56 +0000)]
Add HAS_FREXPL, HAS_ISNAN, HAS_ISNANL, and HAS_MODFL.
Now pp_ncmp() returns undef is either operand is a NaN.
p4raw-id: //depot/cfgperl@5943
Jarkko Hietaniemi [Mon, 24 Apr 2000 19:45:17 +0000 (19:45 +0000)]
Regen Configure to match #5937.
p4raw-id: //depot/cfgperl@5942
Jarkko Hietaniemi [Mon, 24 Apr 2000 19:24:11 +0000 (19:24 +0000)]
Further Unicos fixes for Mark Lutz.
p4raw-id: //depot/cfgperl@5941
Mark P Lutz [Fri, 14 Apr 2000 20:21:00 +0000 (20:21 +0000)]
Various Unicos 10.0.0.6 fixes.
Subject: [ID
20000414.007] Test suite failures in perl 5.6 on Cray T90
Reply-To: tecmpl1@triton.ca.boeing.com
To: perl5-porters@perl.org
Message-Id: <
200004142021.UAA36232@triton.ca.boeing.com>
p4raw-id: //depot/cfgperl@5940
Gurusamy Sarathy [Mon, 24 Apr 2000 19:01:24 +0000 (19:01 +0000)]
more pod nits (from Larry Virden)
p4raw-id: //depot/perl@5939
Gurusamy Sarathy [Mon, 24 Apr 2000 18:54:01 +0000 (18:54 +0000)]
Consolidated B::Deparse fixes (from Stephen McCamant)
p4raw-id: //depot/perl@5938
Jarkko Hietaniemi [Mon, 24 Apr 2000 17:39:00 +0000 (17:39 +0000)]
Integrate with Sarathy.
p4raw-id: //depot/cfgperl@5937
Gurusamy Sarathy [Mon, 24 Apr 2000 17:30:06 +0000 (17:30 +0000)]
additional tests for change#5934 (from Paul Marquess, who also
sent in the same fix)
p4raw-link: @5934 on //depot/perl:
f0a6fc868045c83877fa78e3e0f6f0be236d2a27
p4raw-id: //depot/perl@5936
M. J. T. Guy [Tue, 18 Apr 2000 18:24:49 +0000 (19:24 +0100)]
Do not assume sign propagation.
Subject: [PATCH] Re: [ID
20000410.010] Unicoss 10.0.0.6 and perl 5.6.0
To: payner@ncifcrf.gov, perl5-porters@perl.org
Message-Id: <E12hbk1-0006Ws-00@ursa.cus.cam.ac.uk>
p4raw-id: //depot/cfgperl@5935
Gurusamy Sarathy [Mon, 24 Apr 2000 17:16:54 +0000 (17:16 +0000)]
propagate lexical warnings from surrounding scope correctly
within string eval()
p4raw-id: //depot/perl@5934
Jarkko Hietaniemi [Mon, 24 Apr 2000 17:01:07 +0000 (17:01 +0000)]
Flatten the cpp jungle doing the nosuid checking.
p4raw-id: //depot/cfgperl@5933
Gurusamy Sarathy [Mon, 24 Apr 2000 09:08:14 +0000 (09:08 +0000)]
add rsignal(), whichsig() and do_join() to public API list
(mod_perl uses them to good advantage)
p4raw-id: //depot/perl@5932
Gurusamy Sarathy [Mon, 24 Apr 2000 09:01:40 +0000 (09:01 +0000)]
fix RE brokenness on refs/overloaded things (from Ilya Zakharevich)
p4raw-id: //depot/perl@5931
Gurusamy Sarathy [Mon, 24 Apr 2000 08:58:33 +0000 (08:58 +0000)]
small os390 tweaks (from Peter Prymmer)
p4raw-id: //depot/perl@5930
Gurusamy Sarathy [Mon, 24 Apr 2000 08:55:25 +0000 (08:55 +0000)]
pod nits
p4raw-id: //depot/perl@5929
Gurusamy Sarathy [Mon, 24 Apr 2000 08:50:13 +0000 (08:50 +0000)]
revert change#5923 ("breaks" t/lib/io_poll.t)
p4raw-link: @5923 on //depot/perl:
8bcaa1dfb69612366728f7905b96ca3f11eafd21
p4raw-id: //depot/perl@5928
Gurusamy Sarathy [Mon, 24 Apr 2000 08:43:24 +0000 (08:43 +0000)]
arrange for next() to resume at the unstack op rather than the
loop conditional, so that scope cleanup happens correctly
(from Stephen McCamant)
p4raw-id: //depot/perl@5927
Gurusamy Sarathy [Mon, 24 Apr 2000 08:18:40 +0000 (08:18 +0000)]
on windows, reserve 16M of stack rather than 128M (allows more
threads to run concurrently)
p4raw-id: //depot/perl@5926
Gurusamy Sarathy [Mon, 24 Apr 2000 08:13:52 +0000 (08:13 +0000)]
POSIX-BC tweak (from Ignasi Roca <ignasi.roca@fujitsu.siemens.es>)
p4raw-id: //depot/perl@5925
Gurusamy Sarathy [Mon, 24 Apr 2000 08:08:59 +0000 (08:08 +0000)]
avoid using uninitialized memory in require version check
p4raw-id: //depot/perl@5924
Gurusamy Sarathy [Mon, 24 Apr 2000 07:20:14 +0000 (07:20 +0000)]
various bugs in IO::Poll (from Lincoln D. Stein <lstein@cshl.org>)
p4raw-id: //depot/perl@5923
Gurusamy Sarathy [Mon, 24 Apr 2000 07:08:42 +0000 (07:08 +0000)]
commentary about IoTYPE() (from Nathan Torkington)
p4raw-id: //depot/perl@5922
Gurusamy Sarathy [Mon, 24 Apr 2000 06:58:26 +0000 (06:58 +0000)]
make eq unicode-aware (from Gisle Aas); fix bogus tests revealed
by fix
p4raw-id: //depot/perl@5921
Gurusamy Sarathy [Mon, 24 Apr 2000 06:37:59 +0000 (06:37 +0000)]
Larry's fix for buggy propagation of utf8-ness in join(); add test
p4raw-id: //depot/perl@5920
Gurusamy Sarathy [Mon, 24 Apr 2000 06:21:58 +0000 (06:21 +0000)]
Configure might miss old directories when prefix must be
expanded (from Robin Barker)
p4raw-id: //depot/perl@5919
Gurusamy Sarathy [Mon, 24 Apr 2000 06:16:11 +0000 (06:16 +0000)]
VMS nits in glob() test (from Charles Lane)
p4raw-id: //depot/perl@5918
Gurusamy Sarathy [Mon, 24 Apr 2000 06:11:56 +0000 (06:11 +0000)]
various pod nits (from Larry Virden and others)
p4raw-id: //depot/perl@5917
Gurusamy Sarathy [Mon, 24 Apr 2000 05:52:43 +0000 (05:52 +0000)]
ignore dotfiles (.cvsignore etc) in test (from Warren Jones
<wjones@tc.fluke.com>)
p4raw-id: //depot/perl@5916
Gurusamy Sarathy [Mon, 24 Apr 2000 05:07:01 +0000 (05:07 +0000)]
supported platforms mixed up
p4raw-id: //depot/perl@5915
Gurusamy Sarathy [Mon, 24 Apr 2000 04:56:08 +0000 (04:56 +0000)]
caller() wasn't returning the right number of elements for
eval {...}
p4raw-id: //depot/perl@5914
Gurusamy Sarathy [Mon, 24 Apr 2000 04:35:41 +0000 (04:35 +0000)]
pod nit: $yday range for localtime/gmtime is 0..364 not 1..365 (from
Mark-Jason Dominus)
p4raw-id: //depot/perl@5913
Gurusamy Sarathy [Mon, 24 Apr 2000 04:17:15 +0000 (04:17 +0000)]
fix totally broken caching in UNIVERSAL::isa() (from
Nick Ing-Simmons)
p4raw-id: //depot/perl@5912
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