Package: perl Version: 5.32.1-4+deb11u4 Severity: normal X-Debbugs-Cc: [email protected]
Dear Maintainer, I use Perl and use the module Dumpvalue for development. Unforunately, it fails on deep recursion when I attempt to dump shared arrays or hashes with circular loops: 2025-09-15 19:20:06 dpchrist@laalaa ~/sandbox/perl $ cat /etc/debian_version ; uname -a ; perl -v 11.11 Linux laalaa 5.10.0-35-amd64 #1 SMP Debian 5.10.237-1 (2025-05-19) x86_64 GNU/Linux This is perl 5, version 32, subversion 1 (v5.32.1) built for x86_64-linux-gnu-thread-multi (with 56 registered patches, see perl -V for more detail) Copyright 1987-2021, Larry Wall Perl may be copied only under the terms of either the Artistic License or the GNU General Public License, which may be found in the Perl 5 source kit. Complete documentation for Perl, including FAQ lists, should be found on this system using "man perl" or "perldoc perl". If you have access to the Internet, point your browser at http://www.perl.org/, the Perl Home Page. 2025-09-15 19:20:22 dpchrist@laalaa ~/sandbox/perl $ cat Dumpvalue-bug-shared-array-with-circular-loop.sh #!/bin/sh # $Id: Dumpvalue-bug-shared-array-with-circular-loop.sh,v 1.2 2025/09/16 02:19:40 dpchrist Exp $ # # Demonstrate bug in Perl Dumpvalue with shared array with circular # loop. # # By David Paul Christensen [email protected] # Public Domain. perl -Mstrict -Mwarnings -Mthreads -Mthreads::shared -MDumpvalue -e 'my @a :shared; $a[0]=\@a; $|=1; my $d=Dumpvalue->new; $d->dumpValue(\@a)' > foo & pid=$! sleep 1 kill $pid sync wc foo 2025-09-15 19:20:29 dpchrist@laalaa ~/sandbox/perl $ cat Dumpvalue-bug-shared-hash-with-circular-loop.sh #!/bin/sh # $Id: Dumpvalue-bug-shared-hash-with-circular-loop.sh,v 1.1 2025/09/16 02:19:40 dpchrist Exp $ # # Demonstrate bug in Perl Dumpvalue with shared hash with circular # loop. # # By David Paul Christensen [email protected] # Public Domain. perl -Mstrict -Mwarnings -Mthreads -Mthreads::shared -MDumpvalue -e 'my %h :shared; $h{loop}=\%h; $|=1; my $d=Dumpvalue->new; $d->dumpValue(\%h)' > foo & pid=$! sleep 1 kill $pid sync wc foo 2025-09-15 19:20:34 dpchrist@laalaa ~/sandbox/perl $ /bin/sh -x Dumpvalue-bug-shared-array-with-circular-loop.sh + pid=10808 + sleep 1 + perl -Mstrict -Mwarnings -Mthreads -Mthreads::shared -MDumpvalue -e my @a :shared; $a[0]=\@a; $|=1; my $d=Dumpvalue->new; $d->dumpValue(\@a) Deep recursion on subroutine "Dumpvalue::unwrap" at /usr/share/perl/5.32/Dumpvalue.pm line 173. Deep recursion on subroutine "Dumpvalue::DumpElem" at /usr/share/perl/5.32/Dumpvalue.pm line 270. + kill 10808 + sync + wc foo 16008 32016 384760284 foo 2025-09-15 19:20:50 dpchrist@laalaa ~/sandbox/perl $ /bin/sh -x Dumpvalue-bug-shared-hash-with-circular-loop.sh + pid=10817 + sleep 1 + perl -Mstrict -Mwarnings -Mthreads -Mthreads::shared -MDumpvalue -e my %h :shared; $h{loop}=\%h; $|=1; my $d=Dumpvalue->new; $d->dumpValue(\%h) Deep recursion on subroutine "Dumpvalue::unwrap" at /usr/share/perl/5.32/Dumpvalue.pm line 173. Deep recursion on subroutine "Dumpvalue::DumpElem" at /usr/share/perl/5.32/Dumpvalue.pm line 243. + kill 10817 + sync + wc foo 17045 51135 436322304 foo 2025-09-15 19:21:05 dpchrist@laalaa ~/sandbox/perl $ These bugs may affect newer Debian, Perl, and/or Dumpvalue releases. Please feel free to modify and/or add the test scripts to your testing infrastructure. Please advise. Thank you, David -- System Information: Debian Release: 11.11 APT prefers oldoldstable-updates APT policy: (500, 'oldoldstable-updates'), (500, 'oldoldstable-security'), (500, 'oldoldstable') Architecture: amd64 (x86_64) Kernel: Linux 5.10.0-35-amd64 (SMP w/4 CPU threads) Kernel taint flags: TAINT_FIRMWARE_WORKAROUND, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages perl depends on: ii dpkg 1.20.13 ii libperl5.32 5.32.1-4+deb11u4 ii perl-base 5.32.1-4+deb11u4 ii perl-modules-5.32 5.32.1-4+deb11u4 Versions of packages perl recommends: ii netbase 6.3 Versions of packages perl suggests: pn libtap-harness-archive-perl <none> pn libterm-readline-gnu-perl | libterm-readline-perl-perl <none> ii make 4.3-4.1 ii perl-doc 5.32.1-4+deb11u4 -- no debconf information
