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bug#5369: Emacs Compiler bug: freeze advice, dynamic-docstrings: nil


From: Michael Heerdegen
Subject: bug#5369: Emacs Compiler bug: freeze advice, dynamic-docstrings: nil
Date: Tue, 12 Jan 2010 23:29:41 +0100
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.3 (gnu/linux)

Hello Glenn,

some days ago, you closed my bug report concerning the Byte Compiler of
Gnu Emacs. I have found another compiler bug, and since you seem to be
involved in the last changes of bytecomp.el, I send it to you instead of
opening a new bug report; I hope this is ok; could you please check if
the following can be reproduced with the current version of bytecomp?

Byte compile the following file with emacs -Q:

;; -*- byte-compile-dynamic-docstrings: nil -*-

(defadvice startup-echo-area-message
  (around my-startup-echo-area-message freeze)
  "This is a test advice."
  (setq ad-return-value
        "Welcome to GNU Emacs and happy hacking!"))

Compilation succeeds, but when I load the resulting file, I get an
error:

Load error for /media/sda1/test.elc:
(invalid-read-syntax #)

My compiled file looks like this:

;ELC..
;;; Compiled by address@hidden on Sat Jan  9 22:32:31 2010
;;; from file /media/sdb1/test.el
;;; in Emacs version 23.1.1
;;; with all optimizations.

;;; This file uses opcodes which do not exist in Emacs 18.
(if (and (boundp 'emacs-version)
         (< (aref emacs-version (1- (length emacs-version))) ?A)
         (or (and (boundp 'epoch::version) epoch::version)
             (string-lessp emacs-version "19")))
    (error "`test.el' was compiled for Emacs 19 or later"))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;


(byte-code 
"\301\302!\204.\302\300\303\304N\236A.\301!\205.K)\206.\303KM\210\301\207" 
[origname fboundp 
ad-Orig-startup-echo-area-message-around-my-startup-echo-area-message 
startup-echo-area-message ad-advice-info] 4)
(defalias 'startup-echo-area-message #[nil "\301.\302.)\302\207" 
[ad-return-value nil "Welcome to GNU Emacs and happy hacking!"] 1 #\
("This function is advised.

Permanent around-advice `my-startup-echo-area-message':
This is a test advice." 0 25 (face font-lock-warning-face ad-advice-info 
startup-echo-area-message) 25 105 (ad-advice-info startup-echo-area-message))])

This was done with Emacs 23.1.1; the problem doesn't appear in my Emacs 22.


Thanks in advance,

Michael.






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