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Nov 17, 2009, 2:04 PM
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[perl #70614] Seg. fault with eval/use/UNITCHECK/DESTROY/eval combination
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# New Ticket Created by Abigail
# Please include the string: [perl #70614]
# in the subject line of all future correspondence about this issue.
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=70614 >
This is a bug report for perl from abigail [at] abigail,
generated with the help of perlbug 1.39 running under perl 5.10.1.
-----------------------------------------------------------------
[Please describe your issue here]
$ cat Module.pm
package Module;
sub DESTROY {eval ""}
UNITCHECK {my $x = bless []}
1;
$ perl -wE 'eval "use Module";'
Segmentation fault
$
Removing the eval in the DESTROY function, the UNITCHECK, changing
the eval in the main program to a plain C<< use Module; >>, or making
$x a package variable prevents the segmentation fault.
Running it as
valgrind -v perl -wE 'eval "use Module";'
results in no errors, just a 5 byte memory leak.
[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
category=core
severity=low
---
Site configuration information for perl 5.10.1:
Configured by abigail at Sun Aug 23 22:26:52 CEST 2009.
Summary of my perl5 (revision 5 version 10 subversion 1) configuration:
Platform:
osname=linux, osvers=2.6.11-1.1369_fc4smp, archname=i686-linux-64int-ld
uname='linux almanda 2.6.11-1.1369_fc4smp #1 smp thu jun 2 23:08:39 edt 2005 i686 i686 i386 gnulinux '
config_args='-des -Dusedevel -Uversiononly -Dmydomain=.abigail.be -Dcf_email=abigail [at] abigail -Dperladmin=abigail [at] abigail -Doptimize=-g -Dcc=gcc -Dprefix=/opt/perl -Dusemorebits'
hint=recommended, useposix=true, d_sigaction=define
useithreads=undef, usemultiplicity=undef
useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
use64bitint=define, use64bitall=undef, uselongdouble=define
usemymalloc=n, bincompat5005=undef
Compiler:
cc='gcc', ccflags ='-DDEBUGGING -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
optimize='-g',
cppflags='-DDEBUGGING -fno-strict-aliasing -pipe -I/usr/local/include'
ccversion='', gccversion='4.0.2 20051125 (Red Hat 4.0.2-8)', gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=12345678
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
ivtype='long long', ivsize=8, nvtype='long double', nvsize=12, Off_t='off_t', lseeksize=8
alignbytes=4, prototype=define
Linker and Libraries:
ld='gcc', ldflags =' -L/usr/local/lib'
libpth=/usr/local/lib /lib /usr/lib
libs=-lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lc
perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc
libc=/lib/libc-2.3.5.so, so=so, useshrplib=false, libperl=libperl.a
gnulibc_version='2.3.5'
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
cccdlflags='-fPIC', lddlflags='-shared -g -L/usr/local/lib'
Locally applied patches:
---
@INC for perl 5.10.1:
/home/abigail/Perl
/opt/perl/lib/5.10.1/i686-linux-64int-ld
/opt/perl/lib/5.10.1
/opt/perl/lib/site_perl/5.10.1/i686-linux-64int-ld
/opt/perl/lib/site_perl/5.10.1
/opt/perl/lib/site_perl/5.10.0/i686-linux-64int-ld
/opt/perl/lib/site_perl/5.10.0
/opt/perl/lib/site_perl/5.8.8
/opt/perl/lib/site_perl
.
---
Environment for perl 5.10.1:
HOME=/home/abigail
LANG=en_US.UTF-8
LANGUAGE (unset)
LC_CTYPE=en_US.utf8
LC_MESSAGES=en_US.utf8
LD_LIBRARY_PATH=/home/abigail/Lib:/usr/local/lib:/usr/lib:/lib:/usr/X11R6/lib
LOGDIR (unset)
PATH=/home/abigail/Bin:/opt/perl/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/usr/X11R6/bin:/usr/games:/opt/git/bin:/home/abigail/Perl/Photos:/home/abigail/Perl/Bin:/opt/mysql/bin
PERL5LIB=/home/abigail/Perl
PERLDIR=/opt/perl
PERL_BADLANG (unset)
SHELL=/bin/bash
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