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[perl #120039] perl -s does not respect read-onlyness, can cause segfaults
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From:
Brian Fraser
Date:
September 28, 2013 15:59
Subject:
[perl #120039] perl -s does not respect read-onlyness, can cause segfaults
Message ID:
rt-3.6.HEAD-31239-1380383980-1876.120039-75-0@perl.org
# New Ticket Created by Brian Fraser
# Please include the string: [perl #120039]
# in the subject line of all future correspondence about this issue.
# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=120039 >
This is a bug report for perl from fraserbn@gmail.com,
generated with the help of perlbug 1.39 running under perl 5.18.1.
-----------------------------------------------------------------
[Please describe your issue here]
$ perl -E 'say $] = 10'
Modification of a read-only value attempted at -e line 1.
$ perl -s -E 'say $]' -- '-]=10'
10
Also, there's a 5.10 regression here:
$ perl -s -le 'print ${"::"}' -- -::=10
Assertion failed: (sv), function Perl_sv_setpv, file sv.c, line 4589.
Abort trap: 6
Rather than fixing those, how about we deprecate -s?
[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
category=core
severity=low
---
Site configuration information for perl 5.18.1:
Configured by hugmeir at Thu Sep 12 14:58:14 ART 2013.
Summary of my perl5 (revision 5 version 18 subversion 1) configuration:
Platform:
osname=darwin, osvers=12.4.0, archname=darwin-thread-multi-2level
uname='darwin airtiger 12.4.0 darwin kernel version 12.4.0: wed may 1
17:57:12 pdt 2013; root:xnu-2050.24.15~1release_x86_64 x86_64 '
config_args='-de
-Dprefix=/Users/hugmeir/perl5/perlbrew/perls/perl-5.18.1 -Dusethreads
-DDEBUGGING
-Aeval:scriptdir=/Users/hugmeir/perl5/perlbrew/perls/perl-5.18.1/bin'
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 ='-fno-common -DPERL_DARWIN -DDEBUGGING
-fno-strict-aliasing -pipe -fstack-protector',
optimize='-O3 -g',
cppflags='-fno-common -DPERL_DARWIN -DDEBUGGING -fno-strict-aliasing
-pipe -fstack-protector'
ccversion='', gccversion='4.2.1 Compatible Apple LLVM 4.2
(clang-425.0.28)', 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='env MACOSX_DEPLOYMENT_TARGET=10.3 cc', ldflags =' -fstack-protector'
libpth=/usr/lib
libs=-ldbm -ldl -lm -lutil -lc
perllibs=-ldl -lm -lutil -lc
libc=, so=dylib, useshrplib=false, libperl=libperl.a
gnulibc_version=''
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=bundle, d_dlsymun=undef, ccdlflags=' '
cccdlflags=' ', lddlflags=' -bundle -undefined dynamic_lookup
-fstack-protector'
Locally applied patches:
---
@INC for perl 5.18.1:
/Users/hugmeir/.perlbrew/libs/perl-5.16.2@all
/lib/perl5/darwin-thread-multi-2level
/Users/hugmeir/.perlbrew/libs/perl-5.16.2@all/lib/perl5
/Users/hugmeir/perl5/perlbrew/perls/perl-5.18.1/lib/site_perl/5.18.1/darwin-thread-multi-2level
/Users/hugmeir/perl5/perlbrew/perls/perl-5.18.1/lib/site_perl/5.18.1
/Users/hugmeir/perl5/perlbrew/perls/perl-5.18.1/lib/5.18.1/darwin-thread-multi-2level
/Users/hugmeir/perl5/perlbrew/perls/perl-5.18.1/lib/5.18.1
.
---
Environment for perl 5.18.1:
DYLD_LIBRARY_PATH=/usr/local/mysql/lib:
HOME=/Users/hugmeir
LANG=en_US.UTF-8
LANGUAGE (unset)
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/Users/hugmeir/perl5/perlbrew/bin:/Users/hugmeir/perl5/perlbrew/perls/perl-5.18.1/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/git/bin:/usr/local/mysql/bin
PERL5LIB=/Users/hugmeir/.perlbrew/libs/perl-5.16.2@all/lib/perl5
PERLBREW_BASHRC_VERSION=0.58
PERLBREW_HOME=/Users/hugmeir/.perlbrew
PERLBREW_LIB=all
PERLBREW_MANPATH=/Users/hugmeir/perl5/perlbrew/perls/perl-5.18.1/man
PERLBREW_PATH=/Users/hugmeir/perl5/perlbrew/bin:/Users/hugmeir/perl5/perlbrew/perls/perl-5.18.1/bin
PERLBREW_PERL=perl-5.18.1
PERLBREW_ROOT=/Users/hugmeir/perl5/perlbrew
PERLBREW_VERSION=0.58
PERL_BADLANG (unset)
PERL_LOCAL_LIB_ROOT=/Users/hugmeir/.perlbrew/libs/perl-5.16.2@all
PERL_MB_OPT=--install_base /Users/hugmeir/.perlbrew/libs/perl-5.16.2@all
PERL_MM_OPT=INSTALL_BASE=/Users/hugmeir/.perlbrew/libs/perl-5.16.2@all
SHELL=/bin/bash
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