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Re: CANNOT_DUMP support

From: Stephen J. Turnbull
Subject: Re: CANNOT_DUMP support
Date: Wed, 13 Feb 2008 07:30:53 +0900

Chris Hall writes:

 > Well, its been a long time since I've worked at the level unexec 
 > operates at, and even then it was on System/360 and Series/1, but it 
 > looks like an interesting problem.

XEmacs has not had an unexec issue since 2001, because of the
introduction of the "portable dumper".  The portable dumper
transparently ignored the "Hannibal Lector" ld and (mostly) the "Chaos
Incarnate" SELinux loader.  It also has made preload support for new
platforms trivial.

The authoritative voice on that module is Olivier Galibert
<address@hidden>, if the idea interests you.  The code
may even be legally[1] usable, as the number of contributors is very
small and all (except maybe Kyle Jones) would probably sign
assignments.  (It does depend on the layout and types of builtin Lisp
objects, so probably it wouldn't help all that much, though.)

[1]  By which I mean that it will satisfy the GNU Emacs project's
requirements for provenance and defensibility, not that it's under
some kind of non-GPL-compatible license.

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