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Re: bug in building 21.1

From: Gerd Moellmann
Subject: Re: bug in building 21.1
Date: 30 Oct 2001 19:32:17 +0100
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.1.50

Richard Stallman <address@hidden> writes:

>     I read thru the INSTALL and saw I should be using libungif-4.1.0b1,
>     which I hadn't prior to my first build. I obtained this release and
>     installed it prior to building emacs-21.1. As per my previous messages,
>     I've been dying in temacs and emacs on exit in the destructors for
>     libungif. This much you know.
>     I just reconfig'd emacs with --without-gif, and rebuilt. No more
>     problem. That may not be very interesting to you, but it does
>     demonstrate that the problem is some emacs-ungif thing; it does kind of
>     eliminate the problem as an emacs thing trying to make ungif look bad.
>     If you have any suggestions of things for me to try, let me know.
> That is an important step forward in localizing the problem,
> but in order to figure out how to fix the bug, we need to know
> precisely what causes the crash.  Can anyone else reproduce this?
> Can anyone debug it?

I have only a guess to offer: when I read ``destructor'' I think C++,
and I don't know what happens when linking a C program with a C++
library.  Is there perhaps a way to compile libungif on that system
without C++ being involved somehow?

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