Environment variables are not always propagated to sub-process

[p5pRT]

Migrated from rt.perl.org#128995 (status was 'rejected')

Searchable as RT128995$

[p5pRT]

From cherio@gmail.com

Created by cherio@gmail.com

Environment variables with '.' (dot character) are not always passed to the
child process.
In the following example 'test.variable' will ne be available to the child
process when it starts​:

$ENV{'test.variable'} = 'Hello kitty';
system("'/bin/program' 'arg1' 'arg2'");

However a slightly modified version of the same code works and
'test.variable' is available in the child program

$ENV{'test.variable'} = 'Hello kitty';
system('/bin/program', 'arg1', 'arg2');

This is a regression. It worked both ways in Perl 5.18

Perl Info

Flags:
    category=core
    severity=low

Site configuration information for perl 5.22.1:

Configured by Debian Project at Sun Mar 13 11:54:18 UTC 2016.

Summary of my perl5 (revision 5 version 22 subversion 1) configuration:

  Platform:
    osname=linux, osvers=3.16.0, archname=x86_64-linux-gnu-thread-multi
    uname='linux localhost 3.16.0 #1 smp debian 3.16.0 x86_64 gnulinux '
    config_args='-Dusethreads -Duselargefiles -Dcc=x86_64-linux-gnu-gcc
-Dcpp=x86_64-linux-gnu-cpp -Dld=x86_64-linux-gnu-gcc -Dccflags=-DDEBIAN
-Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -fstack-protector-strong -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/5.22
-Darchlib=/usr/lib/x86_64-linux-gnu/perl/5.22 -Dvendorprefix=/usr
-Dvendorlib=/usr/share/perl5
-Dvendorarch=/usr/lib/x86_64-linux-gnu/perl5/5.22 -Dsiteprefix=/usr/local
-Dsitelib=/usr/local/share/perl/5.22.1
-Dsitearch=/usr/local/lib/x86_64-linux-gnu/perl/5.22.1
-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 -dEs -Duseshrplib -Dlibperl=libperl.so.5.22.1'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=define, usemultiplicity=define
    use64bitint=define, use64bitall=define, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='x86_64-linux-gnu-gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE
-DDEBIAN -fwrapv -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 -fwrapv
-fno-strict-aliasing -pipe -I/usr/local/include'
    ccversion='', gccversion='5.3.1 20160311', gccosandvers=''
    intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678,
doublekind=3
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16,
longdblkind=3
    ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t',
lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='x86_64-linux-gnu-gcc', ldflags =' -fstack-protector-strong
-L/usr/local/lib'
    libpth=/usr/local/lib /usr/lib/gcc/x86_64-linux-gnu/5/include-fixed
/usr/include/x86_64-linux-gnu /usr/lib /lib/x86_64-linux-gnu /lib/../lib
/usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib
    libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt
    perllibs=-ldl -lm -lpthread -lc -lcrypt
    libc=libc-2.21.so, so=so, useshrplib=true, libperl=libperl.so.5.22
    gnulibc_version='2.21'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib
-fstack-protector-strong'

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 under /usr/lib
    DEBPKG:debian/no_packlist_perllocal - Don't install .packlist or
perllocal.pod for perl or vendor
    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/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/deprecate-with-apt - http://bugs.debian.org/747628 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 5.22.1-9 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/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:debian/regen-skip - Skip a regeneration check in unrelated git
repositories
    DEBPKG:debian/makemaker-pasthru - http://bugs.debian.org/758471 Pass LD
settings through to subdirectories
    DEBPKG:fixes/pod_man_reproducible_date - http://bugs.debian.org/759405
Support POD_MAN_DATE in Pod::Man for the left-hand footer
    DEBPKG:debian/locale-robustness - http://bugs.debian.org/782068 [perl
#124310] Make t/run/locale.t survive missing locales masked by LC_ALL
    DEBPKG:fixes/podman-utc - http://bugs.debian.org/780259 Make the
embedded date from Pod::Man reproducible
    DEBPKG:fixes/podman-utc-docs - http://bugs.debian.org/780259
Documentation and test suite updates for UTC fix
    DEBPKG:fixes/podman-empty-date - http://bugs.debian.org/780259 Support
an empty POD_MAN_DATE environment variable
    DEBPKG:fixes/podman-pipe - http://bugs.debian.org/777405 Better errors
for man pages from standard input
    DEBPKG:debian/pod2man-customized - Update porting/customized.dat for
pod2man modifications
    DEBPKG:debian/makemaker-manext - http://bugs.debian.org/247370 Make
EU::MakeMaker honour MANnEXT settings in generated manpage headers
    DEBPKG:debian/makemaker_customized - Update t/porting/customized.dat
for files patched in Debian
    DEBPKG:debian/do-not-record-build-date - [6baa8db]
http://bugs.debian.org/774422 [perl #125830] Allow overriding the compile
time in "perl -V" output
    DEBPKG:fixes/podman-source-date-epoch - http://bugs.debian.org/801621
Make Pod::Man honor the SOURCE_DATE_EPOCH environment variable
    DEBPKG:fixes/podman-source-date-epoch-cleanups -
http://bugs.debian.org/801621 Coding style and documentation for
SOURCE_EPOCH_DATE
    DEBPKG:fixes/podman-source-date-epoch-testfix -
http://bugs.debian.org/807086 Guard for building with SOURCE_DATE_EPOCH or
POD_MAN_DATE set
    DEBPKG:debian/devel-ppport-reproducibility -
http://bugs.debian.org/801523 Sort the list of XS code files when
generating RealPPPort.xs
    DEBPKG:fixes/encode-unicode-bom - http://bugs.debian.org/798727 [
rt.cpan.org #107043] Address
https://rt.cpan.org/Public/Bug/Display.html?id=107043
    DEBPKG:debian/encode-unicode-bom-doc - http://bugs.debian.org/798727
Document Debian backport of Encode::Unicode fix
    DEBPKG:debian/kfreebsd-softupdates - http://bugs.debian.org/796798 Work
around Debian Bug#796798
    DEBPKG:fixes/autodie-scope - http://bugs.debian.org/798096 Fix a
scoping issue with "no autodie" and the "system" sub
    DEBPKG:debian/debugperl-compat-fix - [perl #127212]
http://bugs.debian.org/810326 Disable PERL_TRACK_MEMPOOL for debugging
builds
    DEBPKG:fixes/CVE-2015-8607_file_spec_taint_fix -
http://bugs.debian.org/810719 [perl #126862] ensure File::Spec::canonpath()
preserves taint
    DEBPKG:fixes/mkstemp-umask - http://bugs.debian.org/810924 [perl
#127322] [e57270b] Fix umask for mkstemp(3) calls
    DEBPKG:fixes/crosscompile-no-targethost - [perl #127234] Fix the
Configure escape with usecrosscompile but no targethost
    DEBPKG:fixes/podlators-no-encode - [rt.cpan.org #111156] Degrade
gracefully if utf8 is requested but Encode is not available
    DEBPKG:debian/cross-time-hires - [rt.cpan.org #111391] Add an
environment variable to skip running configuration probes
    DEBPKG:fixes/encode-unicode-pod - Unicode.pm: Fix POD error
    DEBPKG:fixes/memoize-pod - [rt.cpan.org #89441] Fix POD errors in
Memoize
    DEBPKG:fixes/ok-pod - Added encoding for pod.
    DEBPKG:fixes/CVE-2016-2381_duplicate_env - remove duplicate environment
variables from environ


@INC for perl 5.22.1:
    /etc/perl
    /usr/local/lib/x86_64-linux-gnu/perl/5.22.1
    /usr/local/share/perl/5.22.1
    /usr/lib/x86_64-linux-gnu/perl5/5.22
    /usr/share/perl5
    /usr/lib/x86_64-linux-gnu/perl/5.22
    /usr/share/perl/5.22
    /usr/local/lib/site_perl
    /usr/lib/x86_64-linux-gnu/perl-base
    .


Environment for perl 5.22.1:
    HOME=/home/escort
    LANG=en_US.UTF-8
    LANGUAGE (unset)
    LC_TIME=en_DK.UTF-8
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)

PATH=/home/escort/bin:/home/escort/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
    PERL_BADLANG (unset)
    SHELL=/bin/bash

[p5pRT]

From cherio@gmail.com

Environment variables with '.' (dot character) are not always passed to the
child process.
In the following example 'test.variable' will ne be available to the child
process when it starts​:

$ENV{'test.variable'} = 'Hello kitty';
system("'/bin/program' 'arg1' 'arg2'");

However a slightly modified version of the same code works and
'test.variable' is available in the child program

$ENV{'test.variable'} = 'Hello kitty';
system('/bin/program', 'arg1', 'arg2');

This is a regression. It worked both ways in Perl 5.18

[p5pRT]

From cherio@gmail.com

Created by cherio@gmail.com

Environment variables with '.' (dot character) are not always passed to the child process.
In the following example 'test.variable' will ne be available to the child process when it starts​:

$ENV{'test.variable'} = 'Hello kitty';
system("'/bin/program' 'arg1' 'arg2'");

However a slightly modified version of the same code works and 'test.variable' is available in the child program

$ENV{'test.variable'} = 'Hello kitty';
system('/bin/program', 'arg1', 'arg2');

This is a regression. It worked both ways in Perl 5.18

Perl Info

Flags:
    category=core
    severity=low

Site configuration information for perl 5.22.1:

Configured by Debian Project at Sun Mar 13 11:54:18 UTC 2016.

Summary of my perl5 (revision 5 version 22 subversion 1) configuration:
   
  Platform:
    osname=linux, osvers=3.16.0, archname=x86_64-linux-gnu-thread-multi
    uname='linux localhost 3.16.0 #1 smp debian 3.16.0 x86_64 gnulinux '
    config_args='-Dusethreads -Duselargefiles -Dcc=x86_64-linux-gnu-gcc -Dcpp=x86_64-linux-gnu-cpp -Dld=x86_64-linux-gnu-gcc -Dccflags=-DDEBIAN -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -fstack-protector-strong -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/5.22 -Darchlib=/usr/lib/x86_64-linux-gnu/perl/5.22 -Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5 -Dvendorarch=/usr/lib/x86_64-linux-gnu/perl5/5.22 -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl/5.22.1 -Dsitearch=/usr/local/lib/x86_64-linux-gnu/perl/5.22.1 -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 -dEs -Duseshrplib -Dlibperl=libperl.so.5.22.1'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=define, usemultiplicity=define
    use64bitint=define, use64bitall=define, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='x86_64-linux-gnu-gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fwrapv -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 -fwrapv -fno-strict-aliasing -pipe -I/usr/local/include'
    ccversion='', gccversion='5.3.1 20160311', gccosandvers=''
    intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678, doublekind=3
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16, longdblkind=3
    ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='x86_64-linux-gnu-gcc', ldflags =' -fstack-protector-strong -L/usr/local/lib'
    libpth=/usr/local/lib /usr/lib/gcc/x86_64-linux-gnu/5/include-fixed /usr/include/x86_64-linux-gnu /usr/lib /lib/x86_64-linux-gnu /lib/../lib /usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib
    libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt
    perllibs=-ldl -lm -lpthread -lc -lcrypt
    libc=libc-2.21.so, so=so, useshrplib=true, libperl=libperl.so.5.22
    gnulibc_version='2.21'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib -fstack-protector-strong'

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 under /usr/lib
    DEBPKG:debian/no_packlist_perllocal - Don't install .packlist or perllocal.pod for perl or vendor
    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/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/deprecate-with-apt - http://bugs.debian.org/747628 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 5.22.1-9 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/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:debian/regen-skip - Skip a regeneration check in unrelated git repositories
    DEBPKG:debian/makemaker-pasthru - http://bugs.debian.org/758471 Pass LD settings through to subdirectories
    DEBPKG:fixes/pod_man_reproducible_date - http://bugs.debian.org/759405 Support POD_MAN_DATE in Pod::Man for the left-hand footer
    DEBPKG:debian/locale-robustness - http://bugs.debian.org/782068 [perl #124310] Make t/run/locale.t survive missing locales masked by LC_ALL
    DEBPKG:fixes/podman-utc - http://bugs.debian.org/780259 Make the embedded date from Pod::Man reproducible
    DEBPKG:fixes/podman-utc-docs - http://bugs.debian.org/780259 Documentation and test suite updates for UTC fix
    DEBPKG:fixes/podman-empty-date - http://bugs.debian.org/780259 Support an empty POD_MAN_DATE environment variable
    DEBPKG:fixes/podman-pipe - http://bugs.debian.org/777405 Better errors for man pages from standard input
    DEBPKG:debian/pod2man-customized - Update porting/customized.dat for pod2man modifications
    DEBPKG:debian/makemaker-manext - http://bugs.debian.org/247370 Make EU::MakeMaker honour MANnEXT settings in generated manpage headers
    DEBPKG:debian/makemaker_customized - Update t/porting/customized.dat for files patched in Debian
    DEBPKG:debian/do-not-record-build-date - [6baa8db] http://bugs.debian.org/774422 [perl #125830] Allow overriding the compile time in "perl -V" output
    DEBPKG:fixes/podman-source-date-epoch - http://bugs.debian.org/801621 Make Pod::Man honor the SOURCE_DATE_EPOCH environment variable
    DEBPKG:fixes/podman-source-date-epoch-cleanups - http://bugs.debian.org/801621 Coding style and documentation for SOURCE_EPOCH_DATE
    DEBPKG:fixes/podman-source-date-epoch-testfix - http://bugs.debian.org/807086 Guard for building with SOURCE_DATE_EPOCH or POD_MAN_DATE set
    DEBPKG:debian/devel-ppport-reproducibility - http://bugs.debian.org/801523 Sort the list of XS code files when generating RealPPPort.xs
    DEBPKG:fixes/encode-unicode-bom - http://bugs.debian.org/798727 [rt.cpan.org #107043] Address https://rt.cpan.org/Public/Bug/Display.html?id=107043
    DEBPKG:debian/encode-unicode-bom-doc - http://bugs.debian.org/798727 Document Debian backport of Encode::Unicode fix
    DEBPKG:debian/kfreebsd-softupdates - http://bugs.debian.org/796798 Work around Debian Bug#796798
    DEBPKG:fixes/autodie-scope - http://bugs.debian.org/798096 Fix a scoping issue with "no autodie" and the "system" sub
    DEBPKG:debian/debugperl-compat-fix - [perl #127212] http://bugs.debian.org/810326 Disable PERL_TRACK_MEMPOOL for debugging builds
    DEBPKG:fixes/CVE-2015-8607_file_spec_taint_fix - http://bugs.debian.org/810719 [perl #126862] ensure File::Spec::canonpath() preserves taint
    DEBPKG:fixes/mkstemp-umask - http://bugs.debian.org/810924 [perl #127322] [e57270b] Fix umask for mkstemp(3) calls
    DEBPKG:fixes/crosscompile-no-targethost - [perl #127234] Fix the Configure escape with usecrosscompile but no targethost
    DEBPKG:fixes/podlators-no-encode - [rt.cpan.org #111156] Degrade gracefully if utf8 is requested but Encode is not available
    DEBPKG:debian/cross-time-hires - [rt.cpan.org #111391] Add an environment variable to skip running configuration probes
    DEBPKG:fixes/encode-unicode-pod - Unicode.pm: Fix POD error
    DEBPKG:fixes/memoize-pod - [rt.cpan.org #89441] Fix POD errors in Memoize
    DEBPKG:fixes/ok-pod - Added encoding for pod.
    DEBPKG:fixes/CVE-2016-2381_duplicate_env - remove duplicate environment variables from environ


@INC for perl 5.22.1:
    /etc/perl
    /usr/local/lib/x86_64-linux-gnu/perl/5.22.1
    /usr/local/share/perl/5.22.1
    /usr/lib/x86_64-linux-gnu/perl5/5.22
    /usr/share/perl5
    /usr/lib/x86_64-linux-gnu/perl/5.22
    /usr/share/perl/5.22
    /usr/local/lib/site_perl
    /usr/lib/x86_64-linux-gnu/perl-base
    .


Environment for perl 5.22.1:
    HOME=/home/escort
    LANG=en_US.UTF-8
    LANGUAGE (unset)
    LC_TIME=en_DK.UTF-8
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/home/escort/bin:/home/escort/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
    PERL_BADLANG (unset)
    SHELL=/bin/bash

[p5pRT]

From @dcollinsn

Merging accidental duplicates.

--
Respectfully,
Dan Collins

[p5pRT]

From zefram@fysh.org

Cherio wrote​:

This is a regression. It worked both ways in Perl 5.18

It works for me, both ways, on 5.22, 5.18, and other Perl versions.

The way that you're saying doesn't work involves perl invoking a shell
to parse the command, as opposed to invoking the target program directly.
Could your shell be filtering out the environment variable?

Try running the Perl program under "strace -fveexecve". That will
show exactly what gets execed, at the system call level, and with what
environment.

-zefram

[p5pRT]

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

[p5pRT]

From @iabyn

On Fri, Aug 19, 2016 at 11​:14​:03AM -0700, Cherio wrote​:

# New Ticket Created by Cherio
# Please include the string​: [perl #128995]
# in the subject line of all future correspondence about this issue.
# <URL​: https://rt-archive.perl.org/perl5/Ticket/Display.html?id=128995 >

Environment variables with '.' (dot character) are not always passed to the
child process.
In the following example 'test.variable' will ne be available to the child
process when it starts​:

$ENV{'test.variable'} = 'Hello kitty';
system("'/bin/program' 'arg1' 'arg2'");

However a slightly modified version of the same code works and
'test.variable' is available in the child program

$ENV{'test.variable'} = 'Hello kitty';
system('/bin/program', 'arg1', 'arg2');

This is a regression. It worked both ways in Perl 5.18

I can't reproduce this, not on 5.22.1 nor bleadperl.

I think this is an issue with your shell rather than perl.
In your second system() call with multiple arguments, perl directly calls
/bin/program. In the first form, it passes the string
"'/bin/program' 'arg1' 'arg2'" to /bin/sh, which then calls /bin/program.

I'd suggest running an strace to see which program is dropping the
environment variable.

Here I run it against a couple of small demo scripts.
I've trimmed the output of strace so it doesn't include most of my
environment variables.

  $ cat /tmp/demo
  #!/usr/bin/perl
  $ENV{'test.variable'} = 'Hello kitty';
  system("'/tmp/show_env' 'arg1' 'arg2'");

  $ cat /tmp/show_env
  #!/usr/bin/perl
  print "$ENV{'test.variable'}\n";

  $ perl5221 /tmp/demo
  Hello kitty

  $ strace -f -e trace=execve -v perl5221 /tmp/demo
  execve("perl5221", ["perl5221", "/tmp/demo"], [...env vars...]) = 0
  [pid 1820] execve("/bin/sh", ["sh", "-c", "'/tmp/show_env' 'arg1' 'arg2'"], ["XDG_VTNR=2", "XDG_SESSION_ID=1", ... "test.variable=Hello kitty"]) = 0
  [pid 1820] execve("/tmp/show_env", ["/tmp/show_env", "arg1", "arg2"], ["XDG_VTNR=2", "XDG_SESSION_ID=1", ... "test.variable=Hello kitty", ]) = 0
  Hello kitty

Here we see perl5221 being run, which calls /bin/sh, passing it $test.variable,
which calls /tmp/show_env, also passing it $test.variable.

What do you get when you run strace as above against those two scripts?

--
"There's something wrong with our bloody ships today, Chatfield."
  -- Admiral Beatty at the Battle of Jutland, 31st May 1916.

[p5pRT]

From dennis@kaarsemaker.net

On za, 2016-08-20 at 09​:15 +0100, Dave Mitchell wrote​:

I think this is an issue with your shell rather than perl.

As usual dash is being strict

hurricane​:~$ env FOO=1 dash -c 'env | grep FOO'
FOO=1
hurricane​:~$ env FOO.x=1 dash -c 'env | grep FOO'
hurricane​:~$

[p5pRT]

From cherio@gmail.com

I got an exact working example, just copy & paste into your terminal and you'll reproduce it

cat > ./show-env.pl <<EOF
#!/usr/bin/perl
print("VAR=\$ENV{'test.variable'}\n");
EOF
cat > ./run-test.pl <<EOF
#!/usr/bin/perl
\$ENV{'test.variable'} = "Hello kitty";
system("./show-env.pl", 'arg1', 'arg2'); # This works
system("./show-env.pl arg1 arg2"); # This works
system("./show-env.pl 'arg1' arg2"); # This FAILS!!!
system("'./show-env.pl' arg1 arg2"); # This FAILS!!!
system("'./show-env.pl' 'arg1' 'arg2'"); # This FAILS!!!
EOF
chmod +x ./run-test.pl ./show-env.pl
./run-test.pl

Seems like single quotes inside a double quoted string make the difference

[p5pRT]

From cherio@gmail.com

On Sat Aug 20 22​:56​:53 2016, cherio@​gmail.com wrote​:

I got an exact working example, just copy & paste into your terminal
and you'll reproduce it

cat > ./show-env.pl <<EOF
#!/usr/bin/perl
print("VAR=\$ENV{'test.variable'}\n");
EOF
cat > ./run-test.pl <<EOF
#!/usr/bin/perl
\$ENV{'test.variable'} = "Hello kitty";
system("./show-env.pl", 'arg1', 'arg2'); # This works
system("./show-env.pl arg1 arg2"); # This works
system("./show-env.pl 'arg1' arg2"); # This FAILS!!!
system("'./show-env.pl' arg1 arg2"); # This FAILS!!!
system("'./show-env.pl' 'arg1' 'arg2'"); # This FAILS!!!
EOF
chmod +x ./run-test.pl ./show-env.pl
./run-test.pl

Seems like single quotes inside a double quoted string make the
difference

The regression can be reproduced in Ubuntu 16.04, it doesn't occur in Ubuntu 14.04.

[p5pRT]

From @iabyn

Since its been shown that this is related to a particular shell's handling of environment variables and not related to perl, I'm marking the ticket rejected

[p5pRT]

@iabyn - Status changed from 'open' to 'rejected'

[p5pRT]

From @iabyn

On Fri, Aug 19, 2016 at 11​:03​:30AM -0700, Cherio wrote​:

Environment variables with '.' (dot character) are not always passed to the
child process.
In the following example 'test.variable' will ne be available to the child
process when it starts​:

$ENV{'test.variable'} = 'Hello kitty';
system("'/bin/program' 'arg1' 'arg2'");

However a slightly modified version of the same code works and
'test.variable' is available in the child program

$ENV{'test.variable'} = 'Hello kitty';
system('/bin/program', 'arg1', 'arg2');

This is a regression. It worked both ways in Perl 5.18

Any environment variable removal is been done by your shell, not perl.
In the first case above system() passes the argument (and env) to your
shell for processing.

Closing.

--
Justice is when you get what you deserve.
Law is when you get what you pay for.

[p5pRT]

From @iabyn

On Thu, Mar 30, 2017 at 11​:29​:09AM +0100, Dave Mitchell wrote​:

Any environment variable removal is been done by your shell, not perl.
In the first case above system() passes the argument (and env) to your
shell for processing.

Closing.

(And I didn't spot that this ticket was a duplicate that had already
been merged and closed).

--
I don't want to achieve immortality through my work...
I want to achieve it through not dying.
  -- Woody Allen