From: "Kelly, Brian" <brian.kelly@bcbsa.com>
To: "'cygwin@cygwin.com'" <cygwin@cygwin.com>
Date: Wed, 7 Mar 2012 09:52:25 -0600
Subject: RE: Both versions of Perl (5.10 and 5.14) DLL collision on XP Pro, rebase does not work - serious problem with latest Cygwin base Release - 1.7.11-1
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Just saw this on an earlier thread:

http://cygwin.com/ml/cygwin/2012-03/msg00182.html

> > >   With the introduction of cygwin 1.7.11-1, perl scripts that use
> > >   dynamic loading fail with dll errors when another program is exec'ed.

> > I'm just generating a developers snapshot for testing.  Please give 
> > the today's snapshot from http://cygwin.com/snapshots/ a try.

I'm confident that this is the same issue I'm experiencing. Sorry for "polluting" the list. (I did a cursory check before posting - I'll be more thorough next time).

Brian Kelly

-----Original Message-----
From: Kelly, Brian
Sent: Wednesday, March 07, 2012 9:30 AM
To: 
Subject: Both versions of Perl (5.10 and 5.14) DLL collision on XP Pro, rebase does not work - serious problem with latest Cygwin base Release - 1.7.11-1

On two systems I tested this on, the latest cygwin base release breaks both releases of Perl. The problem appears to be some type of DLL collision with some types of compiled Perl modules on Windows XP Professional. Below is a simple example using the Data::Dump::Streamer module:


use Data::Dump::Streamer;
my $out=`ls`;
print "OUT=$out\n";


When run, it produces the following output:

$ perl test.pl
      8 [main] perl 3692 child_copy: loaded dll data write copy failed, 0x57573000..0x575733E0, done 0, windows pid 2320, Win32 error 487


If you comment out the module, the backtick `ls` and print run fine. If you comment out the backtick line, the module loads fine. But together, I see the problem.

I have already attempted to run rebaseall and perlrebase (multiple times in fact), but these do not correct the problem. When I roll back to release 1.7.10-1, (with *NO* other changes), the problem goes away.

Please find attached my cygcheck output.

Thanks,
Brian Kelly


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