Subject: bug#10232: 24.0.92; gnus-summary-scroll-up error

From: Thierry Volpiatto <[email-masked]>
Date: Tue, 06 Dec 2011 15:36:59 +0100

Stefan Monnier <[email-masked]> writes:

>> Debugger entered--Lisp error: (error "Invalid byte code in /usr/local/share/emacs/24.0.92/lisp/wid-edit.elc")
>
> You've rebuilt wid-edit.elc after the current process had already
> loaded it.  Either restart your Emacs, or just do
> M-x load-library RET wid-edit RET
Ok after restarting emacs, it works again.

> The wid-edit.el file uses `byte-compile-dynamic' which means that when
> you read wid-edit.elc some parts are skipped and replaced by references
> to the corresponding chunk in the file.  Those chunks are later fetched
> on demand, but of course, if the file gets modified in the mean time you
> can get into trouble.
> The same trick is used to autoload docstrings, but luckily in the case
> of docstrings the code happens to detect the problem at a stage early
> enough that we can usually fix it (update the references and try again)
> without user intervention.
> For the bytecode refs used with `byte-compile-dynamic' by the time we
> discover the problem, we just have the file name (shown in the error
> message) but not the object that refers to it, so we can't do the fix
> up :-(

Thanks for explanation.

-- 
  Thierry
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