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Nov 23, 2009, 12:10 PM
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[perl #70764] $' fails to initialized for pre-compiled regular expression matches
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# New Ticket Created by adik-perl [at] ilovebacon
# Please include the string: [perl #70764]
# in the subject line of all future correspondence about this issue.
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=70764 >
This is a bug report for perl from adik-perl [at] ilovebacon,
generated with the help of perlbug 1.39 running under perl 5.10.1.
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[Please describe your issue here]
When I compile a regular expression using qr, the "end of match" variables
$' fails to initialize:
#!/usr/bin/perl
use strict;
use warnings;
my $rx = qr/o/;
my $a = "ooaoaoao";
my $foo = 0;
$foo += () = ($a =~ /$rx/g);
print "$foo\n"; # correct
$foo = 0;
for ($foo += ($a =~ /o/); $' && ($' =~ /o/) && ($foo++) ; ) { ; }
print "1: $foo\n"; # No error
$foo = 0;
for ($foo += ($a =~ /$rx/); $' && ($' =~ /$rx/) && ($foo++) ; ) { ; }
print "2: $foo\n"; # initialization warning, incorrect results: THE BUG
exit 0;
[Please do not change anything below this line]
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---
Flags:
category=core
severity=medium
---
Site configuration information for perl 5.10.1:
Configured by Debian Project at Wed Nov 11 12:52:05 UTC 2009.
Summary of my perl5 (revision 5 version 10 subversion 1) configuration:
Platform:
osname=linux, osvers=2.6.26-2-powerpc64, archname=powerpc-linux-gnu-thread-multi
uname='linux praetorius 2.6.26-2-powerpc64 #1 smp thu nov 5 05:46:36 utc 2009 ppc gnulinux '
config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN -Dcccdlflags=-fPIC -Darchname=powerpc-linux-gnu -Dprefix=/usr -Dprivlib=/usr/share/perl/5.10 -Darchlib=/usr/lib/perl/5.10 -Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5 -Dvendorarch=/usr/lib/perl5 -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl/5.10.1 -Dsitearch=/usr/local/lib/perl/5.10.1 -Dman1dir=/usr/share/man/man1 -Dman3dir=/usr/share/man/man3 -Dsiteman1dir=/usr/local/man/man1 -Dsiteman3dir=/usr/local/man/man3 -Dman1ext=1 -Dman3ext=3perl -Dpager=/usr/bin/sensible-pager -Uafs -Ud_csh -Ud_ualarm -Uusesfio -Uusenm -DDEBUGGING=-g -Doptimize=-O2 -Duseshrplib -Dlibperl=libperl.so.5.10.1 -Dd_dosuid -des'
hint=recommended, useposix=true, d_sigaction=define
useithreads=define, usemultiplicity=define
useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
use64bitint=undef, use64bitall=undef, uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
optimize='-O2 -g',
cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
ccversion='', gccversion='4.3.4', gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=4321
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
ivtype='long', ivsize=4, 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 /usr/lib /usr/lib64
libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt
perllibs=-ldl -lm -lpthread -lc -lcrypt
libc=/lib/libc-2.10.1.so, so=so, useshrplib=true, libperl=libperl.so.5.10.1
gnulibc_version='2.10.1'
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
cccdlflags='-fPIC', lddlflags='-shared -O2 -g -L/usr/local/lib -fstack-protector'
Locally applied patches:
---
@INC for perl 5.10.1:
/etc/perl
/usr/local/lib/perl/5.10.1
/usr/local/share/perl/5.10.1
/usr/lib/perl5
/usr/share/perl5
/usr/lib/perl/5.10
/usr/share/perl/5.10
/usr/local/lib/site_perl
.
---
Environment for perl 5.10.1:
HOME=/home/adik
LANG=en_US.UTF-8
LANGUAGE (unset)
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/usr/local/bin:/usr/bin:/bin:/sbin:/usr/sbin:/home/adik/bin:/usr/X11R6/bin:/usr/local/ibm-java2-ppc-50/bin
PERL_BADLANG (unset)
SHELL=/bin/bash
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