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From:	Chris Faylor <cgf AT cygnus DOT com>
Date:	Wed, 12 Jul 2000 22:42:27 -0400
To:	"'cygwin-developers AT sourceware DOT cygnus DOT com'" <cygwin-developers AT sourceware DOT cygnus DOT com>
Subject:	Re: _impure_ptr uninitialized in DLLs?
Message-ID:	<20000712224227.A7487@cygnus.com>
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References:	<779F20BCCE5AD31186A50008C75D9979171746 AT silldn_mail1 DOT sanwaint DOT com>
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In-Reply-To:	<779F20BCCE5AD31186A50008C75D9979171746@silldn_mail1.sanwaint.com>; from EFifer@sanwaint.com on Wed, Jul 12, 2000 at 07:03:07PM +0100

On Wed, Jul 12, 2000 at 07:03:07PM +0100, Fifer, Eric wrote:
>>This should be fixed in CVS now.  It will require updating libcygwin.a.
>
>I'm still having problems.  The dlopen() flavor works now, but when
>linking against a normal DLL, environ is NULL in the main program.
>
>Here's another demonstration:

I see the problem.  I've been resisting the urge to rewrite the dll_init.cc
rat's nest.  I don't know how much longer I can hold out.

In scratching this bug I found another problem.  dll_init routines can use
malloc in some circumstances.  This means that there is a potential deadlock
situation since DLL initialization is serialized and malloc uses a mutex
to serialize its access.

Head.  hurts.

cgf

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