GNU bug report logs - #14120
invalid load-history in emacsen that CANNOT_DUMP

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: BT Templeton <bt <at> hcoop.net>
Subject: bug#14120: closed (Re: bug#14120: invalid load-history in emacsen
 that CANNOT_DUMP)
Date: Fri, 06 Sep 2019 00:10:03 +0000

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Your bug report

#14120: invalid load-history in emacsen that CANNOT_DUMP

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 14120 <at> debbugs.gnu.org.

-- 
14120: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=14120
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Glenn Morris <rgm <at> gnu.org>
To: 14120-done <at> debbugs.gnu.org
Subject: Re: bug#14120: invalid load-history in emacsen that CANNOT_DUMP
Date: Thu, 05 Sep 2019 20:09:52 -0400

Version: 27.1

The CANNOT_DUMP option no longer exists, and Emacs now uses a portable
dumper by default.

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From: BT Templeton <bt <at> hcoop.net>
To: bug-gnu-emacs <at> gnu.org
Subject: invalid load-history in emacsen that CANNOT_DUMP
Date: Mon, 01 Apr 2013 18:47:09 -0400

"loadup.el" sets `current-load-list' to nil, apparently so that it will
have that value when restarting a dumped emacs. However, when Emacs is
built with CANNOT_DUMP defined, "loadup.el" evaluates `top-level'
instead of dumping. This can lead to invalid entries in `load-history'
if something is defined, required, etc. during evaluation of that form.

For example, load-history will contain `((require . tetris))' if
~/.emacs defines this hook:

(add-hook 'lisp-interaction-mode-hook
          (lambda () (require 'tetris)))

For `require', the problem can be fixed by also setting
`load-in-progress' to nil in "loadup.el", but this doesn't fix the bug
for other functions that change the load history.

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