From kevin@moore-and-moore.com

Below is a demo script which dies under perl 5.8.0, but works fine under
5.6.1. Tested on RedHat 8 & 9 (fails) and RedHat 7.3 (works) on i386
(perl -V output for RedHat 9 at end). The error message is​:

Assertion flags == 0 failed​: file "Storable.xs", line 2336 at
./bugger.pl line 6.

Here is the script​:

#!/usr/bin/perl -w
use test_bug;
use Storable;
my $a = test_bug->new;
$a->load_dat('<bug><test>0</test></bug>');
my $b = Storable​::dclone($a);

Here is what I've got in the "test_bug.pm" file​:

package test_bug;
use XML​::Parser;
return 1;
sub new
{
  my $type = shift;
  my $class = ref($type) || $type;
  my $self = {};
  $self->{test} = undef;
  return bless $self, $class;
}
sub load_dat
{
  my $self = shift;
  my $xml_dat = shift;
  my $tag;
  my $p1 = new XML​::Parser(Style => 'Tree');
  my $parsed_data = $p1->parse($xml_dat);
  shift @​{$parsed_data};
  $parsed_data = shift @​{$parsed_data};
  shift @​{$parsed_data};
  $tag = shift @​{$parsed_data};
# $tag now eq 'test', but setting tag to 'test' eliminates error
  $self->{$tag} = "anything you want";
}
__END__

This is about as small as I can make it without eliminating the error;
simplifying the scripts any more (e.g., incorporating test_bug.pm into
bugger.pl) makes the error go away.

Regards,

Kevin Moore

perl -V output (RedHat 9 box)​:

Summary of my perl5 (revision 5.0 version 8 subversion 0) configuration​:
  Platform​:
  osname=linux, osvers=2.4.20-2.48smp,
archname=i386-linux-thread-multi
  uname='linux str'
  config_args='-des -Doptimize=-O2 -march=i386 -mcpu=i686 -g
-Dmyhostname=localhost -Dperladmin=root@​localhost -Dcc=gcc -Dcf_by=Red
Hat, Inc. -Dinstallprefix=/usr -Dprefix=/usr -Darchname=i386-linux
-Dvendorprefix=/usr -Dsiteprefix=/usr
-Dotherlibdirs=/usr/lib/perl5/5.8.0 -Duseshrplib -Dusethreads
-Duseithreads -Duselargefiles -Dd_dosuid -Dd_semctl_semun -Di_db
-Ui_ndbm -Di_gdbm -Di_shadow -Di_syslog -Dman3ext=3pm -Duseperlio
-Dinstallusrbinperl -Ubincompat5005 -Uversiononly -Dpager=/usr/bin/less
-isr'
  hint=recommended, useposix=true, d_sigaction=define
  usethreads=define use5005threads=undef'
useithreads=define usemultiplicity=
  useperlio= d_sfio=undef uselargefiles=define usesocks=undef
  use64bitint=undef use64bitall=un uselongdouble=
  usemymalloc=, bincompat5005=undef
  Compiler​:
  cc='gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS
-DDEBUGGING -fno-strict-aliasing -I/usr/local/include
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm',
  optimize='',
  cppflags='-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS -DDEBUGGING
-fno-strict-aliasing -I/usr/local/include -I/usr/include/gdbm'
  ccversion='', gccversion='3.2.2 20030213 (Red Hat Linux 8.0
3.2.2-1)', gccosandvers=''
gccversion='3.2.2 200302'
  intsize=e, longsize= , ptrsize=p, doublesize=8, byteorder=1234
  d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
  ivtype='long'
k', ivsize=4'
ivtype='long'
known_ext, nvtype='double'
o_nonbl', nvsize=, Off_t='', lseeksize=8
  alignbytes=4, prototype=define
  Linker and Libraries​:
  ld='gcc'
l', ldflags =' -L/usr/local/lib'
ldf'
  libpth=/usr/local/lib /lib /usr/lib
  libs=-lnsl -lgdbm -ldb -ldl -lm -lpthread -lc -lcrypt -lutil
  perllibs=
  libc=/lib/libc-2.3.1.so, so=so, useshrplib=true, libperl=libper
  gnulibc_version='2.3.1'
  Dynamic Linking​:
  dlsrc=dl_dlopen.xs, dlext=so', d_dlsymun=undef, ccdlflags='-rdynamic
-Wl,-rpath,/usr/lib/perl5/5.8.0/i386-linux-thread-multi/CORE'
  cccdlflags='-fPIC'
ccdlflags='-rdynamic -Wl,-rpath,/usr/lib/perl5', lddlflags='s
Unicode/Normalize
XS/A'

Characteristics of this binary (from libperl)​:
  Compile-time options​: DEBUGGING MULTIPLICITY USE_ITHREADS
USE_LARGE_FILES PERL_IMPLICIT_CONTEXT
  Locally applied patches​:
  MAINT18379
  Built under linux
  Compiled at Feb 18 2003 22​:19​:53
  %ENV​:
  PERL5LIB="/home/kevin/dloads/perl/lib/perl5/site_perl​:"
  @​INC​:
 
/home/kevin/dloads/perl/lib/perl5/site_perl/5.8.0/i386-linux-thread-multi
  /home/kevin/dloads/perl/lib/perl5/site_perl/5.8.0
  /home/kevin/dloads/perl/lib/perl5/site_perl
  /usr/lib/perl5/5.8.0/i386-linux-thread-multi
  /usr/lib/perl5/5.8.0
  /usr/lib/perl5/site_perl/5.8.0/i386-linux-thread-multi
  /usr/lib/perl5/site_perl/5.8.0
  /usr/lib/perl5/site_perl
  /usr/lib/perl5/vendor_perl/5.8.0/i386-linux-thread-multi
  /usr/lib/perl5/vendor_perl/5.8.0
  /usr/lib/perl5/vendor_perl
  /usr/lib/perl5/5.8.0/i386-linux-thread-multi
  /usr/lib/perl5/5.8.0
  .

From @andk

Kevin Moore (via RT) <perlbug-followup@​perl.org> writes​:

Below is a demo script which dies under perl 5.8.0, but works fine under
5.6.1. Tested on RedHat 8 & 9 (fails) and RedHat 7.3 (works) on i386
(perl -V output for RedHat 9 at end). The error message is​:

Assertion flags == 0 failed​: file "Storable.xs", line 2336 at
./bugger.pl line 6.

Confirmed on bleadperl. Blame analysis says, it is so since patch 15893.

--
andreas

From guest@guest.guest.xxxxxxxx

This appears to have been solved in Storable-2.08 (and, I believe, perl
5.8.1). The thread "Storable Error" on perl.perl5.porters (Jul 23rd
through Aug 11th) has more info. I think this can be closed.

@smpeters - Status changed from 'open' to 'resolved'