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From: Richard Stallman <rms@gnu.org>
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Subject: Re: Anyone built Emacs with gcc-3.3?
Date: Tue, 08 Jul 2003 10:28:57 -0400
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    Yes, Emacs works with 3.2.3.  With 3.3 it dumps core on C-x C-c in
    __do_global_dtors_aux() after Fkill_emacs() calls exit().

I have a hunch that relates to unexec.  Perhaps unexec fails to
preserve some of the data that __do_global_dtors_aux uses.

Debugging the details is the only way to proceed.