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lexical subs - my sub using our sub segfaults #15545

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p5pRT opened this issue Aug 23, 2016 · 5 comments
Open

lexical subs - my sub using our sub segfaults #15545

p5pRT opened this issue Aug 23, 2016 · 5 comments

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@p5pRT
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@p5pRT p5pRT commented Aug 23, 2016

Migrated from rt.perl.org#129059 (status was 'open')

Searchable as RT129059$

@p5pRT
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@p5pRT p5pRT commented Aug 23, 2016

From @wolfsage

Created by wolfsage@gmail.com

$ cat uh.pl

  use v5.24.0;
  use experimental qw(lexical_subs);

  our sub speak { }

  # Crashes with or without the package decl
  # package Cat {
  my sub meow {
  speak();
  }
  #}

$ gdb --args ./perl -Ilib uh.pl

  [...]
  (gdb) run
  Starting program​: /home/mhorsfall/p5/perl/perl -Ilib uh.pl
  [Thread debugging using libthread_db enabled]
  Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

  Program received signal SIGSEGV, Segmentation fault.
  0x000000000048c4f5 in Perl_cv_undef_flags (cv=0x87ba40, flags=0) at pad.c​:413
  413 U32 inner_rc = SvREFCNT(innercv);
  (gdb) bt
  #0 0x000000000048c4f5 in Perl_cv_undef_flags (cv=0x87ba40, flags=0)
  at pad.c​:413
  #1 0x000000000048bf29 in Perl_cv_undef (cv=0x87ba40) at pad.c​:302
  #2 0x000000000055563b in Perl_leave_scope (base=0) at scope.c​:1194
  #3 0x000000000055e48e in Perl_pp_leave () at pp_ctl.c​:2090
  #4 0x00000000005051a2 in Perl_runops_standard () at run.c​:41
  #5 0x000000000044916f in S_run_body (oldscope=1) at perl.c​:2525
  #6 0x0000000000448d2c in perl_run (my_perl=0x856010) at perl.c​:2448
  #7 0x000000000041edc5 in main (argc=3, argv=0x7fffffffe138,
  env=0x7fffffffe158) at perlmain.c​:123
  (gdb) p innercv
  $1 = (CV * const) 0x0

Perl Info

Flags:
    category=core
    severity=low

Site configuration information for perl 5.18.2:

Configured by Debian Project at Tue Mar  1 17:12:59 UTC 2016.

Summary of my perl5 (revision 5 version 18 subversion 2) configuration:

  Platform:
    osname=linux, osvers=3.13.0-79-generic,
archname=x86_64-linux-gnu-thread-multi
    uname='linux lgw01-37 3.13.0-79-generic #123-ubuntu smp fri feb 19
14:27:58 utc 2016 x86_64 x86_64 x86_64 gnulinux '
    config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN
-D_FORTIFY_SOURCE=2 -g -O2 -fstack-protector --param=ssp-buffer-size=4
-Wformat -Werror=format-security -Dldflags= -Wl,-Bsymbolic-functions
-Wl,-z,relro -Dlddlflags=-shared -Wl,-Bsymbolic-functions -Wl,-z,relro
-Dcccdlflags=-fPIC -Darchname=x86_64-linux-gnu -Dprefix=/usr
-Dprivlib=/usr/share/perl/5.18 -Darchlib=/usr/lib/perl/5.18
-Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5
-Dvendorarch=/usr/lib/perl5 -Dsiteprefix=/usr/local
-Dsitelib=/usr/local/share/perl/5.18.2
-Dsitearch=/usr/local/lib/perl/5.18.2 -Dman1dir=/usr/share/man/man1
-Dman3dir=/usr/share/man/man3 -Dsiteman1dir=/usr/local/man/man1
-Dsiteman3dir=/usr/local/man/man3 -Duse64bitint -Dman1ext=1
-Dman3ext=3perl -Dpager=/usr/bin/sensible-pager -Uafs -Ud_csh
-Ud_ualarm -Uusesfio -Uusenm -Ui_libutil -Uversiononly -DDEBUGGING=-g
-Doptimize=-O2 -Duseshrplib -Dlibperl=libperl.so.5.18.2 -des'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=define, usemultiplicity=define
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=define, use64bitall=define, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN
-fstack-protector -fno-strict-aliasing -pipe -I/usr/local/include
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O2 -g',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fstack-protector
-fno-strict-aliasing -pipe -I/usr/local/include'
    ccversion='', gccversion='4.8.2', gccosandvers=''
    intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
    ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t',
lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -fstack-protector -L/usr/local/lib'
    libpth=/usr/local/lib /lib/x86_64-linux-gnu /lib/../lib
/usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib /usr/lib
    libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt
    perllibs=-ldl -lm -lpthread -lc -lcrypt
    libc=, so=so, useshrplib=true, libperl=libperl.so.5.18.2
    gnulibc_version='2.19'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib -fstack-protector'

Locally applied patches:
    DEBPKG:debian/cpan_definstalldirs - Provide a sensible INSTALLDIRS
default for modules installed from CPAN.
    DEBPKG:debian/db_file_ver - http://bugs.debian.org/340047 Remove
overly restrictive DB_File version check.
    DEBPKG:debian/doc_info - Replace generic man(1) instructions with
Debian-specific information.
    DEBPKG:debian/enc2xs_inc - http://bugs.debian.org/290336 Tweak
enc2xs to follow symlinks and ignore missing @INC directories.
    DEBPKG:debian/errno_ver - http://bugs.debian.org/343351 Remove
Errno version check due to upgrade problems with long-running
processes.
    DEBPKG:debian/libperl_embed_doc - http://bugs.debian.org/186778
Note that libperl-dev package is required for embedded linking
    DEBPKG:fixes/respect_umask - Respect umask during installation
    DEBPKG:debian/writable_site_dirs - Set umask approproately for
site install directories
    DEBPKG:debian/extutils_set_libperl_path - EU:MM: Set location of
libperl.a to /usr/lib
    DEBPKG:debian/no_packlist_perllocal - Don't install .packlist or
perllocal.pod for perl or vendor
    DEBPKG:debian/prefix_changes - Fiddle with *PREFIX and variables
written to the makefile
    DEBPKG:debian/fakeroot - Postpone LD_LIBRARY_PATH evaluation to
the binary targets.
    DEBPKG:debian/instmodsh_doc - Debian policy doesn't install
.packlist files for core or vendor.
    DEBPKG:debian/ld_run_path - Remove standard libs from LD_RUN_PATH
as per Debian policy.
    DEBPKG:debian/libnet_config_path - Set location of libnet.cfg to
/etc/perl/Net as /usr may not be writable.
    DEBPKG:debian/mod_paths - Tweak @INC ordering for Debian
    DEBPKG:debian/module_build_man_extensions -
http://bugs.debian.org/479460 Adjust Module::Build manual page
extensions for the Debian Perl policy
    DEBPKG:debian/prune_libs - http://bugs.debian.org/128355 Prune the
list of libraries wanted to what we actually need.
    DEBPKG:fixes/net_smtp_docs - [rt.cpan.org #36038]
http://bugs.debian.org/100195 Document the Net::SMTP 'Port' option
    DEBPKG:debian/perlivp - http://bugs.debian.org/510895 Make perlivp
skip include directories in /usr/local
    DEBPKG:debian/cpanplus_definstalldirs -
http://bugs.debian.org/533707 Configure CPANPLUS to use the site
directories by default.
    DEBPKG:debian/cpanplus_config_path - Save local versions of
CPANPLUS::Config::System into /etc/perl.
    DEBPKG:debian/deprecate-with-apt - http://bugs.debian.org/702096
Point users to Debian packages of deprecated core modules
    DEBPKG:debian/squelch-locale-warnings -
http://bugs.debian.org/508764 Squelch locale warnings in Debian
package maintainer scripts
    DEBPKG:debian/skip-upstream-git-tests - Skip tests specific to the
upstream Git repository
    DEBPKG:debian/patchlevel - http://bugs.debian.org/567489 List
packaged patches for 5.18.2-2ubuntu1.1 in patchlevel.h
    DEBPKG:debian/skip-kfreebsd-crash - http://bugs.debian.org/628493
[perl #96272] Skip a crashing test case in t/op/threads.t on
GNU/kFreeBSD
    DEBPKG:fixes/document_makemaker_ccflags -
http://bugs.debian.org/628522 [rt.cpan.org #68613] Document that
CCFLAGS should include $Config{ccflags}
    DEBPKG:debian/find_html2text - http://bugs.debian.org/640479
Configure CPAN::Distribution with correct name of html2text
    DEBPKG:debian/hurd_test_skip_stack - http://bugs.debian.org/650175
Disable failing GNU/Hurd tests dist/threads/t/stack.t
    DEBPKG:fixes/manpage_name_Test-Harness -
http://bugs.debian.org/650451 [rt.cpan.org #73399] cpan/Test-Harness:
add NAME headings in modules with POD
    DEBPKG:debian/makemaker-pasthru - http://bugs.debian.org/660195
[rt.cpan.org #28632] Make EU::MM pass LD through to recursive
Makefile.PL invocations
    DEBPKG:debian/perl5db-x-terminal-emulator.patch -
http://bugs.debian.org/668490 Invoke x-terminal-emulator rather than
xterm in perl5db.pl
    DEBPKG:debian/cpan-missing-site-dirs -
http://bugs.debian.org/688842 Fix CPAN::FirstTime defaults with
nonexisting site dirs if a parent is writable
    DEBPKG:fixes/memoize_storable_nstore - [rt.cpan.org #77790]
http://bugs.debian.org/587650 Memoize::Storable: respect 'nstore'
option not respected
    DEBPKG:fixes/net_ftp_failed_command - [rt.cpan.org #37700]
http://bugs.debian.org/491062 Net::FTP: cope gracefully with a failed
command
    DEBPKG:fixes/perlbug-patchlist - [3541c11]
http://bugs.debian.org/710842 [perl #118433] Make perlbug look up the
list of local patches at run time
    DEBPKG:fixes/module_metadata_security_doc - [68cdd4b]
CVE-2013-1437 documentation fix
    DEBPKG:fixes/module_metadata_taint_fix - [bff978f]
http://bugs.debian.org/722210 [rt.cpan.org #88576] untaint version, if
needed, in Module::Metadata
    DEBPKG:fixes/IPC-SysV-spelling - http://bugs.debian.org/730558
[rt.cpan.org #86736] Fix spelling of IPC_CREAT in IPC-SysV
documentation
    DEBPKG:fixes/fix-undef-source -
    DEBPKG:fixes/CVE-2013-7422.patch - [PATCH] [perl #119505] Segfault
from bad backreference
    DEBPKG:fixes/CVE-2014-4330.patch - [PATCH] don't recurse
infinitely in Data::Dumper
    DEBPKG:fixes/CVE-2016-2381.patch - [PATCH 1/2] remove duplicate
environment variables from environ


@INC for perl 5.18.2:
    /etc/perl
    /usr/local/lib/perl/5.18.2
    /usr/local/share/perl/5.18.2
    /usr/lib/perl5
    /usr/share/perl5
    /usr/lib/perl/5.18
    /usr/share/perl/5.18
    /usr/local/lib/site_perl
    .


Environment for perl 5.18.2:
    HOME=/home/mhorsfall
    LANG=en_US.UTF-8
    LANGUAGE=en_US
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/home/mhorsfall/.plenv/libexec:/home/mhorsfall/.plenv/plugins/perl-build/bin:/home/mhorsfall/.plenv/shims:/home/mhorsfall/.plenv/bin:/home/mhorsfall/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
    PERLDOC=-oman
    PERL_BADLANG (unset)
    SHELL=/bin/bash

@p5pRT
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@p5pRT p5pRT commented Dec 31, 2016

From @jkeenan

On Tue, 23 Aug 2016 17​:59​:24 GMT, alh wrote​:

This is a bug report for perl from wolfsage@​gmail.com,
generated with the help of perlbug 1.39 running under perl 5.18.2.

-----------------------------------------------------------------
[Please describe your issue here]

$ cat uh.pl

use v5.24.0;
use experimental qw(lexical_subs);

our sub speak { }

# Crashes with or without the package decl
# package Cat {
my sub meow {
speak();
}
#}

$ gdb --args ./perl -Ilib uh.pl

[...]
(gdb) run
Starting program​: /home/mhorsfall/p5/perl/perl -Ilib uh.pl
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-
gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x000000000048c4f5 in Perl_cv_undef_flags (cv=0x87ba40, flags=0) at
pad.c​:413
413 U32 inner_rc = SvREFCNT(innercv);
(gdb) bt
#0 0x000000000048c4f5 in Perl_cv_undef_flags (cv=0x87ba40, flags=0)
at pad.c​:413
#1 0x000000000048bf29 in Perl_cv_undef (cv=0x87ba40) at pad.c​:302
#2 0x000000000055563b in Perl_leave_scope (base=0) at scope.c​:1194
#3 0x000000000055e48e in Perl_pp_leave () at pp_ctl.c​:2090
#4 0x00000000005051a2 in Perl_runops_standard () at run.c​:41
#5 0x000000000044916f in S_run_body (oldscope=1) at perl.c​:2525
#6 0x0000000000448d2c in perl_run (my_perl=0x856010) at perl.c​:2448
#7 0x000000000041edc5 in main (argc=3, argv=0x7fffffffe138,
env=0x7fffffffe158) at perlmain.c​:123
(gdb) p innercv
$1 = (CV * const) 0x0

I got the segfaults (both commenting-in 'package' and not) running the program at blead -- but I got slightly less output than you did. See attachments.

Thank you very much.

[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags​:
category=core
severity=low
---
Site configuration information for perl 5.18.2​:

Configured by Debian Project at Tue Mar 1 17​:12​:59 UTC 2016.

Summary of my perl5 (revision 5 version 18 subversion 2)
configuration​:

Platform​:
osname=linux, osvers=3.13.0-79-generic,
archname=x86_64-linux-gnu-thread-multi
uname='linux lgw01-37 3.13.0-79-generic #123-ubuntu smp fri feb 19
14​:27​:58 utc 2016 x86_64 x86_64 x86_64 gnulinux '
config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN
-D_FORTIFY_SOURCE=2 -g -O2 -fstack-protector --param=ssp-buffer-size=4
-Wformat -Werror=format-security -Dldflags= -Wl,-Bsymbolic-functions
-Wl,-z,relro -Dlddlflags=-shared -Wl,-Bsymbolic-functions -Wl,-z,relro
-Dcccdlflags=-fPIC -Darchname=x86_64-linux-gnu -Dprefix=/usr
-Dprivlib=/usr/share/perl/5.18 -Darchlib=/usr/lib/perl/5.18
-Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5
-Dvendorarch=/usr/lib/perl5 -Dsiteprefix=/usr/local
-Dsitelib=/usr/local/share/perl/5.18.2
-Dsitearch=/usr/local/lib/perl/5.18.2 -Dman1dir=/usr/share/man/man1
-Dman3dir=/usr/share/man/man3 -Dsiteman1dir=/usr/local/man/man1
-Dsiteman3dir=/usr/local/man/man3 -Duse64bitint -Dman1ext=1
-Dman3ext=3perl -Dpager=/usr/bin/sensible-pager -Uafs -Ud_csh
-Ud_ualarm -Uusesfio -Uusenm -Ui_libutil -Uversiononly -DDEBUGGING=-g
-Doptimize=-O2 -Duseshrplib -Dlibperl=libperl.so.5.18.2 -des'
hint=recommended, useposix=true, d_sigaction=define
useithreads=define, usemultiplicity=define
useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
use64bitint=define, use64bitall=define, uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler​:
cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN
-fstack-protector -fno-strict-aliasing -pipe -I/usr/local/include
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
optimize='-O2 -g',
cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fstack-protector
-fno-strict-aliasing -pipe -I/usr/local/include'
ccversion='', gccversion='4.8.2', gccosandvers=''
intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t',
lseeksize=8
alignbytes=8, prototype=define
Linker and Libraries​:
ld='cc', ldflags =' -fstack-protector -L/usr/local/lib'
libpth=/usr/local/lib /lib/x86_64-linux-gnu /lib/../lib
/usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib /usr/lib
libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt
perllibs=-ldl -lm -lpthread -lc -lcrypt
libc=, so=so, useshrplib=true, libperl=libperl.so.5.18.2
gnulibc_version='2.19'
Dynamic Linking​:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib -fstack-
protector'

Locally applied patches​:
DEBPKG​:debian/cpan_definstalldirs - Provide a sensible INSTALLDIRS
default for modules installed from CPAN.
DEBPKG​:debian/db_file_ver - http​://bugs.debian.org/340047 Remove
overly restrictive DB_File version check.
DEBPKG​:debian/doc_info - Replace generic man(1) instructions with
Debian-specific information.
DEBPKG​:debian/enc2xs_inc - http​://bugs.debian.org/290336 Tweak
enc2xs to follow symlinks and ignore missing @​INC directories.
DEBPKG​:debian/errno_ver - http​://bugs.debian.org/343351 Remove
Errno version check due to upgrade problems with long-running
processes.
DEBPKG​:debian/libperl_embed_doc - http​://bugs.debian.org/186778
Note that libperl-dev package is required for embedded linking
DEBPKG​:fixes/respect_umask - Respect umask during installation
DEBPKG​:debian/writable_site_dirs - Set umask approproately for
site install directories
DEBPKG​:debian/extutils_set_libperl_path - EU​:MM​: Set location of
libperl.a to /usr/lib
DEBPKG​:debian/no_packlist_perllocal - Don't install .packlist or
perllocal.pod for perl or vendor
DEBPKG​:debian/prefix_changes - Fiddle with *PREFIX and variables
written to the makefile
DEBPKG​:debian/fakeroot - Postpone LD_LIBRARY_PATH evaluation to
the binary targets.
DEBPKG​:debian/instmodsh_doc - Debian policy doesn't install
.packlist files for core or vendor.
DEBPKG​:debian/ld_run_path - Remove standard libs from LD_RUN_PATH
as per Debian policy.
DEBPKG​:debian/libnet_config_path - Set location of libnet.cfg to
/etc/perl/Net as /usr may not be writable.
DEBPKG​:debian/mod_paths - Tweak @​INC ordering for Debian
DEBPKG​:debian/module_build_man_extensions -
http​://bugs.debian.org/479460 Adjust Module​::Build manual page
extensions for the Debian Perl policy
DEBPKG​:debian/prune_libs - http​://bugs.debian.org/128355 Prune the
list of libraries wanted to what we actually need.
DEBPKG​:fixes/net_smtp_docs - [rt.cpan.org #36038]
http​://bugs.debian.org/100195 Document the Net​::SMTP 'Port' option
DEBPKG​:debian/perlivp - http​://bugs.debian.org/510895 Make perlivp
skip include directories in /usr/local
DEBPKG​:debian/cpanplus_definstalldirs -
http​://bugs.debian.org/533707 Configure CPANPLUS to use the site
directories by default.
DEBPKG​:debian/cpanplus_config_path - Save local versions of
CPANPLUS​::Config​::System into /etc/perl.
DEBPKG​:debian/deprecate-with-apt - http​://bugs.debian.org/702096
Point users to Debian packages of deprecated core modules
DEBPKG​:debian/squelch-locale-warnings -
http​://bugs.debian.org/508764 Squelch locale warnings in Debian
package maintainer scripts
DEBPKG​:debian/skip-upstream-git-tests - Skip tests specific to the
upstream Git repository
DEBPKG​:debian/patchlevel - http​://bugs.debian.org/567489 List
packaged patches for 5.18.2-2ubuntu1.1 in patchlevel.h
DEBPKG​:debian/skip-kfreebsd-crash - http​://bugs.debian.org/628493
[perl #96272] Skip a crashing test case in t/op/threads.t on
GNU/kFreeBSD
DEBPKG​:fixes/document_makemaker_ccflags -
http​://bugs.debian.org/628522 [rt.cpan.org #68613] Document that
CCFLAGS should include $Config{ccflags}
DEBPKG​:debian/find_html2text - http​://bugs.debian.org/640479
Configure CPAN​::Distribution with correct name of html2text
DEBPKG​:debian/hurd_test_skip_stack - http​://bugs.debian.org/650175
Disable failing GNU/Hurd tests dist/threads/t/stack.t
DEBPKG​:fixes/manpage_name_Test-Harness -
http​://bugs.debian.org/650451 [rt.cpan.org #73399] cpan/Test-Harness​:
add NAME headings in modules with POD
DEBPKG​:debian/makemaker-pasthru - http​://bugs.debian.org/660195
[rt.cpan.org #28632] Make EU​::MM pass LD through to recursive
Makefile.PL invocations
DEBPKG​:debian/perl5db-x-terminal-emulator.patch -
http​://bugs.debian.org/668490 Invoke x-terminal-emulator rather than
xterm in perl5db.pl
DEBPKG​:debian/cpan-missing-site-dirs -
http​://bugs.debian.org/688842 Fix CPAN​::FirstTime defaults with
nonexisting site dirs if a parent is writable
DEBPKG​:fixes/memoize_storable_nstore - [rt.cpan.org #77790]
http​://bugs.debian.org/587650 Memoize​::Storable​: respect 'nstore'
option not respected
DEBPKG​:fixes/net_ftp_failed_command - [rt.cpan.org #37700]
http​://bugs.debian.org/491062 Net​::FTP​: cope gracefully with a failed
command
DEBPKG​:fixes/perlbug-patchlist - [3541c11]
http​://bugs.debian.org/710842 [perl #118433] Make perlbug look up the
list of local patches at run time
DEBPKG​:fixes/module_metadata_security_doc - [68cdd4b]
CVE-2013-1437 documentation fix
DEBPKG​:fixes/module_metadata_taint_fix - [bff978f]
http​://bugs.debian.org/722210 [rt.cpan.org #88576] untaint version, if
needed, in Module​::Metadata
DEBPKG​:fixes/IPC-SysV-spelling - http​://bugs.debian.org/730558
[rt.cpan.org #86736] Fix spelling of IPC_CREAT in IPC-SysV
documentation
DEBPKG​:fixes/fix-undef-source -
DEBPKG​:fixes/CVE-2013-7422.patch - [PATCH] [perl #119505] Segfault
from bad backreference
DEBPKG​:fixes/CVE-2014-4330.patch - [PATCH] don't recurse
infinitely in Data​::Dumper
DEBPKG​:fixes/CVE-2016-2381.patch - [PATCH 1/2] remove duplicate
environment variables from environ

---
@​INC for perl 5.18.2​:
/etc/perl
/usr/local/lib/perl/5.18.2
/usr/local/share/perl/5.18.2
/usr/lib/perl5
/usr/share/perl5
/usr/lib/perl/5.18
/usr/share/perl/5.18
/usr/local/lib/site_perl
.

---
Environment for perl 5.18.2​:
HOME=/home/mhorsfall
LANG=en_US.UTF-8
LANGUAGE=en_US
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/home/mhorsfall/.plenv/libexec​:/home/mhorsfall/.plenv/plugins/perl-
build/bin​:/home/mhorsfall/.plenv/shims​:/home/mhorsfall/.plenv/bin​:/home/mhorsfall/bin​:/usr/local/sbin​:/usr/local/bin​:/usr/sbin​:/usr/bin​:/sbin​:/bin​:/usr/games​:/usr/local/games
PERLDOC=-oman
PERL_BADLANG (unset)
SHELL=/bin/bash

--
James E Keenan (jkeenan@​cpan.org)

@p5pRT
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@p5pRT p5pRT commented Dec 31, 2016

From @jkeenan

$ gdb --args /gitwork/perl/perl ./129059-uh.pl
GNU gdb (Ubuntu 7.11.1-0ubuntu1
16.04) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+​: GNU GPL version 3 or later <http​://gnu.org/licenses/gpl.html>
This is free software​: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see​:
<http​://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at​:
<http​://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /home/jkeenan/gitwork/perl/perl...done.
(gdb) run
Starting program​: /home/jkeenan/gitwork/perl/perl ./129059-uh.pl
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x0000000000474b35 in Perl_cv_undef_flags ()
(gdb) bt
#0 0x0000000000474b35 in Perl_cv_undef_flags ()
#1 0x00000000004fda06 in Perl_leave_scope ()
#2 0x0000000000508334 in Perl_pp_leaveloop ()
#3 0x00000000004bf0c6 in Perl_runops_standard ()
#4 0x0000000000445079 in perl_run ()
#5 0x000000000041ccfb in main ()
(gdb) p innercv
No symbol "innercv" in current context.

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@p5pRT p5pRT commented Dec 31, 2016

@p5pRT
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@p5pRT p5pRT commented Dec 31, 2016

The RT System itself - Status changed from 'new' to 'open'

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