Bug #30054 for Net-SSH-Expect: "use Net::SSH::Expect" breaks other code that uses "open"

Wed Oct 17 07:08:02 2007 danielmcbrearty [...] gmail.com - Ticket created

Subject:

"use Net::SSH::Expect" breaks other code that uses "open"

This bug is described at perlmonks.com - see http://perlmonks.org/?node_id=645156 Basically, using this module (even though no code within it is called) can break other code that uses open and a pipe to control an external process. This only happens when the call to open is an external perl module. The behaviour has been confirmed by other perl monks, one of whom has suggested a probable cause (I haven't yet had time to check that). For a full description, please refer to the link above. Thanks Daniel

Subject:

test.pl

#!/usr/bin/perl -w use strict; use Net::SSH::Expect; use TestExt; use Data::Dumper; package Test; sub run { my $cmd = 'ls -al'; my $pid = open OUT, "$cmd |" or die "cannot fork: $!"; print "running \"$cmd\" (pid = $pid) ... \n"; my @a = <OUT>; print "closing ... \n"; close OUT or die "cannot close: $! $?"; print @a; } package main; my @a = Test->run(); print @a;

Subject:

TestExt.pm

package TestExt; sub run { my $cmd = 'ls -al'; my $pid = open OUT, "$cmd |" or die "cannot fork: $!"; print "running \"$cmd\" (pid = $pid) ... \n"; my @a = <OUT>; print "closing ... \n"; close OUT or die "cannot close: $! $?"; print @a; } 1;

Wed Oct 17 07:16:39 2007 bnegrao [...] gmail.com - Correspondence added

Subject:	Re: [rt.cpan.org #30054] "use Net::SSH::Expect" breaks other code that uses "open"
Date:	Wed, 17 Oct 2007 08:15:16 -0300
To:	bug-Net-SSH-Expect [...] rt.cpan.org
From:	"Bruno Negrao" <bnegrao [...] gmail.com>

Hello Daniel, It looks like he found the cause, would you test that and confirm it to me? (i'm busy now with other things) When you confirm i'll remove that from my module and i'll republish is with other small changes that other people requested. Regards, bruno On 10/17/07, danielmcbrearty@gmail.com via RT <bug-Net-SSH-Expect@rt.cpan.org> wrote: Show quoted text

> > Wed Oct 17 07:08:02 2007: Request 30054 was acted upon. > Transaction: Ticket created by danielmcbrearty@gmail.com > Queue: Net-SSH-Expect > Subject: "use Net::SSH::Expect" breaks other code that uses "open" > Broken in: (no value) > Severity: Important > Owner: Nobody > Requestors: danielmcbrearty@gmail.com > Status: new > Ticket <URL: http://rt.cpan.org/Ticket/Display.html?id=30054 > > > > This bug is described at perlmonks.com - see > http://perlmonks.org/?node_id=645156 > > Basically, using this module (even though no code within it is called) > can break other code that uses open and a pipe to control an external > process. This only happens when the call to open is an external perl module. > > The behaviour has been confirmed by other perl monks, one of whom has > suggested a probable cause (I haven't yet had time to check that). > > For a full description, please refer to the link above. > > > Thanks > > Daniel > > >

Wed Oct 17 07:17:17 2007 The RT System itself - Status changed from 'new' to 'open'

Wed Oct 17 08:13:37 2007 danielmcbrearty [...] gmail.com - Correspondence added

Subject:	Re: [rt.cpan.org #30054] "use Net::SSH::Expect" breaks other code that uses "open"
Date:	Wed, 17 Oct 2007 14:12:22 +0200
To:	bug-Net-SSH-Expect [...] rt.cpan.org
From:	"Daniel McBrearty" <danielmcbrearty [...] gmail.com>

Hi Bruno I will do, it may take a few days though as I am working on other things for a bit regards D On 10/17/07, Bruno Negrao via RT <bug-Net-SSH-Expect@rt.cpan.org> wrote: Show quoted text

> > <URL: http://rt.cpan.org/Ticket/Display.html?id=30054 > > > Hello Daniel, > > It looks like he found the cause, would you test that and confirm it to me? > (i'm busy now with other things) > > When you confirm i'll remove that from my module and i'll republish is > with other small changes that other people requested. > > Regards, > > bruno > > On 10/17/07, danielmcbrearty@gmail.com via RT > <bug-Net-SSH-Expect@rt.cpan.org> wrote:

> > > > Wed Oct 17 07:08:02 2007: Request 30054 was acted upon. > > Transaction: Ticket created by danielmcbrearty@gmail.com > > Queue: Net-SSH-Expect > > Subject: "use Net::SSH::Expect" breaks other code that uses "open" > > Broken in: (no value) > > Severity: Important > > Owner: Nobody > > Requestors: danielmcbrearty@gmail.com > > Status: new > > Ticket <URL: http://rt.cpan.org/Ticket/Display.html?id=30054 > > > > > > > This bug is described at perlmonks.com - see > > http://perlmonks.org/?node_id=645156 > > > > Basically, using this module (even though no code within it is called) > > can break other code that uses open and a pipe to control an external > > process. This only happens when the call to open is an external perl module. > > > > The behaviour has been confirmed by other perl monks, one of whom has > > suggested a probable cause (I haven't yet had time to check that). > > > > For a full description, please refer to the link above. > > > > > > Thanks > > > > Daniel > > > > > >

> >

-- Daniel McBrearty email : danielmcbrearty at gmail.com http://www.engoi.com http://danmcb.vox.com http://danmcb.blogger.com find me on linkedin and facebook BTW : 0873928131

Sun Dec 02 03:46:09 2007 danielmcbrearty [...] gmail.com - Correspondence added

Subject:	Re: [rt.cpan.org #30054] "use Net::SSH::Expect" breaks other code that uses "open"
Date:	Sun, 2 Dec 2007 09:45:38 +0100
To:	bug-Net-SSH-Expect [...] rt.cpan.org
From:	"Daniel McBrearty" <danielmcbrearty [...] gmail.com>

Hi Bruno I'm really sorry I never got back to you on this. I wanted to try to fire up the code to test this, but it's tricky as the thing I was working on to do this is no longer needed, so I haven't been able to. I seem to remember that I did try once, but I couldn't get the bug to reproduce, which was very bizarre - as far as I know, nothing that should affect things had changed. If you are happy with the bugfix, I'd just go ahead and release it. I'm really sorry that I couldn't complete the verification for you though. Daniel On 10/17/07, Daniel McBrearty <danielmcbrearty@gmail.com> wrote: Show quoted text

> Hi Bruno > > I will do, it may take a few days though as I am working on other > things for a bit > > regards > > D > > > On 10/17/07, Bruno Negrao via RT <bug-Net-SSH-Expect@rt.cpan.org> wrote:

> > > > <URL: http://rt.cpan.org/Ticket/Display.html?id=30054 > > > > > Hello Daniel, > > > > It looks like he found the cause, would you test that and confirm it to me? > > (i'm busy now with other things) > > > > When you confirm i'll remove that from my module and i'll republish is > > with other small changes that other people requested. > > > > Regards, > > > > bruno > > > > On 10/17/07, danielmcbrearty@gmail.com via RT > > <bug-Net-SSH-Expect@rt.cpan.org> wrote:

> > > > > > Wed Oct 17 07:08:02 2007: Request 30054 was acted upon. > > > Transaction: Ticket created by danielmcbrearty@gmail.com > > > Queue: Net-SSH-Expect > > > Subject: "use Net::SSH::Expect" breaks other code that uses "open" > > > Broken in: (no value) > > > Severity: Important > > > Owner: Nobody > > > Requestors: danielmcbrearty@gmail.com > > > Status: new > > > Ticket <URL: http://rt.cpan.org/Ticket/Display.html?id=30054 > > > > > > > > > > This bug is described at perlmonks.com - see > > > http://perlmonks.org/?node_id=645156 > > > > > > Basically, using this module (even though no code within it is called) > > > can break other code that uses open and a pipe to control an external > > > process. This only happens when the call to open is an external perl module. > > > > > > The behaviour has been confirmed by other perl monks, one of whom has > > > suggested a probable cause (I haven't yet had time to check that). > > > > > > For a full description, please refer to the link above. > > > > > > > > > Thanks > > > > > > Daniel > > > > > > > > >

> > > >

> > > -- > Daniel McBrearty > email : danielmcbrearty at gmail.com > http://www.engoi.com > http://danmcb.vox.com > http://danmcb.blogger.com > find me on linkedin and facebook > BTW : 0873928131 >

-- Daniel McBrearty email : danielmcbrearty at gmail.com http://www.engoi.com http://danmcb.vox.com http://danmcb.blogger.com find me on linkedin and facebook BTW : 0873928131

Sat Apr 19 14:38:00 2008 BNEGRAO [...] cpan.org - Status changed from 'open' to 'resolved'