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From: Kyle Jones <kyle_jones@wonderworks.com>
To: xemacs-beta@xemacs.org
Subject: Energize and undo

Is the Energize code still used?  If so, then there's probably a
bug in the undo code related to it.  The code says that
Fset_buffer_modified_p can GC under Energize.  Fprimitive_undo
doesn't protect against referencing truncated records after this
possible GC, so it could eat garbage and die.

