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Subject: |
24.0.50; Emacs 24 cannot load byte-compiled code from Emacs 23.3 when using EIEIO's defmethod |
Date: |
Wed, 17 Aug 2011 17:52:03 +0200 |
This is a very late followup to an older message from emacs-devel,
regarding the issue that Emacs24 after the lexbind merge cannot run
byte-compiled code from Emacs23.3 if that is using EIEIO's 'defmethod':
http://thread.gmane.org/gmane.emacs.devel/138030/focus=78338
In that message Stefan Monnier says that this is considered a bug, so
I'm writing this report. Also, this issue is popping up more frequently
now as people are migrating to Emacs24-bzr, but still have compiled Gnus
or CEDET sources with Emacs23, so I think this should be fixed before a
release.
Here's a recipe:
* Create a file ~/eieio-test/eieio-test.el with the following contents:
(require 'eieio)
(defclass someclass ()
((astring :initarg :astring
:initform ""))
"Some test class.")
(defmethod somemethod ((arg someclass))
"Some method."
(message "Somemethod called."))
(provide 'eieio-test)
* Byte-compile the file using Emacs 23.3:
emacs23 --batch -f batch-byte-compile eieio-test.el
* Load Emacs24-bzr with
emacs24 -Q -L ~/eieio-test
and evaluate
(require 'eieio-test)
* The following backtrace will appear:
Debugger entered--Lisp error: (void-function eieio-defmethod)
(eieio-defmethod (quote somemethod) (quote (((arg someclass)) #[(arg)
"\300\301!\207" [message "Somemethod called."] 2 "Some method."])))
require(eieio-test)
eval((require (quote eieio-test)) nil)
* Note that the following setups work:
- Byte compile with Emacs23, require with Emacs23
- Byte compile with Emacs24, require with Emacs24
- Require uncompiled el-file.
* This issue is occuring since the lexbind merge.
Cheers,
David
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--- Begin Message ---
Subject: |
Re: bug#9313: 24.0.50; Emacs 24 cannot load byte-compiled code from Emacs 23.3 when using EIEIO's defmethod |
Date: |
Tue, 23 Aug 2011 14:54:14 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) |
>>> This is a very late followup to an older message from emacs-devel,
>>> regarding the issue that Emacs24 after the lexbind merge cannot run
>>> byte-compiled code from Emacs23.3 if that is using EIEIO's 'defmethod':
>> Does the patch below fix the problem for you?
> Yes.
Thanks, installed,
Stefan
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