From mboxrd@z Thu Jan  1 00:00:00 1970
Path: main.gmane.org!not-for-mail
From: Dave Love <d.love@dl.ac.uk>
Newsgroups: gmane.emacs.devel
Subject: Re: cc-vars.el
Date: 20 Nov 2002 16:35:37 +0000
Sender: emacs-devel-admin@gnu.org
Message-ID: <rzqr8dg42sm.fsf@albion.dl.ac.uk>
References: <E18CrrF-0005AT-00@fencepost.gnu.org>
	<rzqwunberel.fsf@albion.dl.ac.uk>
	<200211180057.JAA24537@etlken.m17n.org>
	<rzqr8di8xlx.fsf@albion.dl.ac.uk> <5bbs4m8qz9.fsf@lister.roxen.com>
	<buod6p2xrol.fsf@mcspd15.ucom.lsi.nec.co.jp>
	<5bwun97ecw.fsf@lister.roxen.com>
NNTP-Posting-Host: main.gmane.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: main.gmane.org 1037810518 15532 80.91.224.249 (20 Nov 2002 16:41:58 GMT)
X-Complaints-To: usenet@main.gmane.org
NNTP-Posting-Date: Wed, 20 Nov 2002 16:41:58 +0000 (UTC)
Cc: Miles Bader <miles@gnu.org>,  Kenichi Handa <handa@m17n.org>,  rms@gnu.org,
	  emacs-devel@gnu.org
Return-path: <emacs-devel-admin@gnu.org>
Original-Received: from quimby.gnus.org ([80.91.224.244])
	by main.gmane.org with esmtp (Exim 3.35 #1 (Debian))
	id 18EXvI-00042L-00
	for <emacs-devel@main.gmane.org>; Wed, 20 Nov 2002 17:41:56 +0100
Original-Received: from monty-python.gnu.org ([199.232.76.173])
	by quimby.gnus.org with esmtp (Exim 3.12 #1 (Debian))
	id 18EXyZ-0007Ky-00
	for <emacs-devel@quimby.gnus.org>; Wed, 20 Nov 2002 17:45:19 +0100
Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org)
	by monty-python.gnu.org with esmtp (Exim 4.10)
	id 18EXpv-0006To-00; Wed, 20 Nov 2002 11:36:23 -0500
Original-Received: from list by monty-python.gnu.org with tmda-scanned (Exim 4.10)
	id 18EXpQ-0005U5-00
	for emacs-devel@gnu.org; Wed, 20 Nov 2002 11:35:52 -0500
Original-Received: from mail by monty-python.gnu.org with spam-scanned (Exim 4.10)
	id 18EXpN-0005Kp-00
	for emacs-devel@gnu.org; Wed, 20 Nov 2002 11:35:51 -0500
Original-Received: from albion.dl.ac.uk ([148.79.80.39])
	by monty-python.gnu.org with esmtp (Exim 4.10)
	id 18EXpE-0005D9-00; Wed, 20 Nov 2002 11:35:40 -0500
Original-Received: from fx by albion.dl.ac.uk with local (Exim 3.35 #1 (Debian))
	id 18EXpC-00030Q-00; Wed, 20 Nov 2002 16:35:38 +0000
Original-To: Martin Stjernholm <mast@lysator.liu.se>
Original-Lines: 18
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2
Errors-To: emacs-devel-admin@gnu.org
X-BeenThere: emacs-devel@gnu.org
X-Mailman-Version: 2.0.11
Precedence: bulk
List-Help: <mailto:emacs-devel-request@gnu.org?subject=help>
List-Post: <mailto:emacs-devel@gnu.org>
List-Subscribe: <http://mail.gnu.org/mailman/listinfo/emacs-devel>,
	<mailto:emacs-devel-request@gnu.org?subject=subscribe>
List-Id: Emacs development discussions. <emacs-devel.gnu.org>
List-Unsubscribe: <http://mail.gnu.org/mailman/listinfo/emacs-devel>,
	<mailto:emacs-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <http://mail.gnu.org/pipermail/emacs-devel/>
Xref: main.gmane.org gmane.emacs.devel:9567
X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:9567

Martin Stjernholm <mast@lysator.liu.se> writes:

> That's the problem; you can't get the pragma without getting the code
> then. E.g. if ACTION gets very large and I decide to split it up in
> several functions I had to add otherwise completely unnecessary
> fboundp checks in them just to silence the compiler.

You can put a conditional around the lot, but I don't remember that
sort of situation actually occurring in code I've worked on.

> Your suggestion will work most of the time, but it still needs to be
> complemented with some pragma forms that doesn't have other effects.

As I said, it's easy to suppress undefined function warnings safely if
you compile file-by-file in batch, for instance with dummy autoloads
for them inside eval-when-compile.  There's probably a case for
something like `(defun fred)' being treated by the optimizer like
`(defvar fred)', but I'm surprised this is such a big deal.