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[perl #56954] Valid syntax provided by @INC import hook is misparsed
From:
Dean Herington
Date:
July 16, 2008 05:19
Subject:
[perl #56954] Valid syntax provided by @INC import hook is misparsed
Message ID:
rt-3.6.HEAD-8814-1216137081-1057.56954-75-0@perl.org
# New Ticket Created by Dean Herington
# Please include the string: [perl #56954]
# in the subject line of all future correspondence about this issue.
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=56954 >
This is a bug report for perl from herington_dean@emc.com,
generated with the help of perlbug 1.35 running under perl v5.8.5.
The attached program uses an @INC import hook to make two simple
modules available from text in the program itself.
`require Mod2` fails with:
Missing right curly or square bracket at /loader/0x94ffc20/Mod2.pm
line 7, at end of line
syntax error at /loader/0x94ffc20/Mod2.pm line 7, at EOF
Compilation failed in require at INC-sub-bug line 47.
even though module Mod2 is well-formed Perl code. Note that
`require Mod1` succeeds, even though there is only a slight syntactic
difference between the two modules.
#!/usr/bin/perl -w
use strict;
sub lines_array { [$_[0] =~ /(.*\n)/g] }
my %files;
$files{"Mod1.pm"} = lines_array <<'END';
package Mod1;
sub subr {
my ($path) = @_;
open FH1, "<", $path
or die;
}
1;
END
$files{"Mod2.pm"} = lines_array <<'END';
package Mod2;
sub subr {
my ($path) = @_;
open FH2, "<", $path
or die;
}
1;
END
unshift @INC, sub {
my ($self, $path) = @_;
my $content = $files{$path};
if ($content) {
my $next = 0;
sub {
if ($next < @$content) {
$_ = $content->[$next];
$next++;
1;
} else {
0;
}
};
}
};
require Mod1;
require Mod2;
---
Flags:
category=core
severity=high
---
This perlbug was built using Perl v5.8.5 in the Red Hat build system.
It is being executed now by Perl v5.8.5 - Mon Jul 24 18:27:33 EDT 2006.
Site configuration information for perl v5.8.5:
Configured by Red Hat, Inc. at Mon Jul 24 18:27:33 EDT 2006.
Summary of my perl5 (revision 5 version 8 subversion 5) configuration:
Platform:
osname=linux, osvers=2.6.9-22.18.bz155725.elsmp,
archname=i386-linux-thread-multi
uname='linux hs20-bc1-4.build.redhat.com 2.6.9-22.18.bz155725.elsmp
#1 smp thu nov 17 15:34:08 est 2005 i686 i686 i386 gnulinux '
config_args='-des -Doptimize=-O2 -g -pipe -m32 -march=i386
-mtune=pentium4 -Dversion=5.8.5 -Dmyhostname=localhost
-Dperladmin=root@localhost -Dcc=gc\
c -Dcf_by=Red Hat, Inc. -Dinstallprefix=/usr -Dprefix=/usr
-Darchname=i386-linux -Dvendorprefix=/usr -Dsiteprefix=/usr -Duseshrplib
-Dusethreads -Duseit\
hreads -Duselargefiles -Dd_dosuid -Dd_semctl_semun -Di_db -Ui_ndbm
-Di_gdbm -Di_shadow -Di_syslog -Dman3ext=3pm -Duseperlio
-Dinstallusrbinperl -Ubincom\
pat5005 -Uversiononly -Dpager=/usr/bin/less -isr
-Dinc_version_list=5.8.4 5.8.3 5.8.2 5.8.1 5.8.0'
hint=recommended, useposix=true, d_sigaction=define
usethreads=define use5005threads=undef 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='gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBUGGING
-fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=6\
4 -I/usr/include/gdbm',
optimize='-O2 -g -pipe -m32 -march=i386 -mtune=pentium4',
cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBUGGING
-fno-strict-aliasing -pipe -I/usr/local/include -I/usr/include/gdbm'
ccversion='', gccversion='3.4.6 20060404 (Red Hat 3.4.6-2)',
gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
ivtype='long', ivsize=4, nvtype='double', nvsize=8, 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=-lresolv -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lpthread
-lc
perllibs=-lresolv -lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
libc=/lib/libc-2.3.4.so, so=so, useshrplib=true, libperl=libperl.so
gnulibc_version='2.3.4'
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E
-Wl,-rpath,/usr/lib/perl5/5.8.5/i386-linux-thread-multi/CORE'
cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib'
Locally applied patches:
---
@INC for perl v5.8.5:
/usr/lib/perl5/5.8.5/i386-linux-thread-multi
/usr/lib/perl5/5.8.5
/usr/lib/perl5/site_perl/5.8.5/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.4/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.3/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.2/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.1/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.0/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.5
/usr/lib/perl5/site_perl/5.8.4
/usr/lib/perl5/site_perl/5.8.3
/usr/lib/perl5/site_perl/5.8.2
/usr/lib/perl5/site_perl/5.8.1
/usr/lib/perl5/site_perl/5.8.0
/usr/lib/perl5/site_perl
/usr/lib/perl5/vendor_perl/5.8.5/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.4/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.3/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.2/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.1/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.0/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.5
/usr/lib/perl5/vendor_perl/5.8.4
/usr/lib/perl5/vendor_perl/5.8.3
/usr/lib/perl5/vendor_perl/5.8.2
/usr/lib/perl5/vendor_perl/5.8.1
/usr/lib/perl5/vendor_perl/5.8.0
/usr/lib/perl5/vendor_perl
.
---
Environment for perl v5.8.5:
HOME=/emc/herind
LANG=en_US.UTF-8
LANGUAGE (unset)
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/pdd/cvs/bin.rh7.ix86:/pdd/cvs/bin:.:/emc/herind/bin:/emc/herind/ap
p/bin:/disks/NSG_Root/CS_tools:/usr/kerberos/bin:/usr/local/bin:/bin:/us
r/bi\
n:/usr/X11R6/bin
PERL_BADLANG (unset)
SHELL=/bin/csh
-
[perl #56954] Valid syntax provided by @INC import hook is misparsed
by Dean Herington