Re: Perl IPC::Open3 bug, affects apt-get, compiler issue?
I too have this exact same problem on a CATS machine running debian
unstable ( kernel 2.4.18-rmk6 ).
Is the only fix to link to debug-perl ?
-- Matthew
on Mon, Jun 03, 2002 at 09:05:34PM -0700, Tony Lindgren wrote:
> Hello debian developers,
>
> There seems to be a bug in Perl in Debian Woody for ARM. The symptoms
> include "Illegal seek" errors, and apt failing to show the configuration
> dialogs.
>
> I've been experiencing this bug first on my Psion 5mx running Woody,
> and recently on my Netwinder box. Following are four examples to try
> to narrow down where the bug happens.
>
> The weird thing is that all the samples below work fine with
> /usr/bin/debugperl instead of /usr/bin/perl. The only difference
> between these builds seems to be the DEBUGGING compile flag, which makes
> me think it may be a compiler issue? Changing between the original
> FPE and the fast FPE in the kernel does not seem to make any difference.
>
> Anybody else experienced this? Let me know if you need more info...
> I've symlinked perl to debugperl for now.
>
> Regards,
>
> Tony
>
> And here are the four samples to demonstrate the bug:
>
> 1. Errors with apt-get
>
> Apt-get fails with "Illegal seek" which happens in IPC::Open3. No
> configuration dialog boxes show up.
>
> nw:/usr/bin# apt-get install --reinstall debconf
> Reading Package Lists... Done
> Building Dependency Tree... Done
> 0 packages upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
> Need to get 0B/94.0kB of archives. After unpacking 0B will be used.
> Do you want to continue? [Y/n] y
> Syntax: dpkg-reconfigure [options] [debs]
> --apt Apt mode.
> -f, --frontend Specify debconf frontend to use.
> -p, --priority Specify minimum priority question to show.
> -s, --showold Redisplay old, already seen questions.
> --terse Enable terse mode.
> (Reading database ... 39573 files and directories currently installed.)
> Preparing to replace debconf 1.0.32 (using .../debconf_1.0.32_all.deb) ...
> Unpacking replacement debconf ...
> Setting up debconf (1.0.32) ...
> Illegal seek at /usr/share/perl5/Debconf/ConfModule.pm line 44.
> dpkg: error processing debconf (--configure):
> subprocess post-installation script returned error exit status 29
> Errors were encountered while processing:
> debconf
> E: Sub-process /usr/bin/dpkg returned an error code (1)
>
> This works fine with /usr/bin/perl-debug instead of /usr/bin/perl.
>
>
> 2. Errors with dpkg-reconfigure
>
> Dpkg-reconfigure fails with following error:
>
> nw:/usr/bin# dpkg-reconfigure debconf
> Syntax: dpkg-reconfigure [options] packages
> -a, --all Reconfigure all packages.
> -u, --unseen-only Show only not yet seen questions.
> --force Force reconfiguration of broken packages.
> -f, --frontend Specify debconf frontend to use.
> -p, --priority Specify minimum priority question to show.
> -s, --showold Redisplay old, already seen questions.
> --terse Enable terse mode.
>
> No dialog boxes for options show up. This works fine when using
> /usr/bin/perl-debug instead of /usr/bin/perl.
>
>
> 3. Errors with Perl IPC::Open3
>
> Here's a little IPC::Open 3 test, copied from the net somewhere:
>
> nw:/usr/bin# perl -e 'use IPC::Open3; print "boo\n"; open3 (\*OUT,\*IN,\*ERR,"echo foo"); $x = <IN>; print "$x\n"' | cat
> boo
>
> The foo is not printed here. This works fine with /usr/bin/perl-debug
> instead of /usr/bin/perl.
>
>
> 4. Integer conversion error with Perl
>
> My friend Paul Walmsley was troubleshooting this bug too, and came to
> the following conclusion (Thanks Paul!):
>
> I think I've isolated it down to a minimal test case. check this out:
>
> perl -e 'print "BUG!\n" unless 0 == 0;'
>
> weird, huh? however,
>
> perl -e 'use integer; print "BUG!\n" unless 0 == 0;'
>
> works fine.
>
> The test above again works fine with /usr/bin/perl-debug instead of
> /usr/bin/perl.
>
>
> And here's my system info:
>
> nw:/usr/bin# uname -a
> Linux nw 2.4.18-rmk4 #9 Fri Apr 26 10:32:44 PDT 2002 armv4l unknown
> (A Netwinder box)
>
> nw:/usr/bin# perl -v
> This is perl, v5.6.1 built for arm-linux
>
> nw:/usr/bin# debugperl -v
> This is perl, v5.6.1 built for arm-linux
>
>
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