GNU bug report logs - #11935
XINT etc. should be functions

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From: Jan Djärv <jan.h.d <at> swipnet.se>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 11935 <at> debbugs.gnu.org, Stefan Monnier <monnier <at> IRO.UMontreal.CA>
Subject: bug#11935: XINT etc. should be functions
Date: Sun, 9 Jun 2013 11:18:45 +0200

Hello.

9 jun 2013 kl. 09:23 skrev Paul Eggert <eggert <at> cs.ucla.edu>:

> On 06/08/2013 11:56 PM, Jan Djärv wrote:
>> most people does not have the latest gcc version.
> 
> Most people can use older GCC versions just fine,
> since by default Emacs builds with optimization flags
> that will generate pretty much the same machine code
> regardless of whether the patch is used.
> 
> The only problem is with developers who are using older
> GCC versions and who wish to compile without optimization,
> to make Emacs easier to debug.  These folks can't use -Og
> (available in GCC 4.8 and later), so they have to make do
> with -O0.
> 

That is not the only problem.  etc/DEBUG recommends to build with no optimization when reporting errors.

> -Og is better for debugging than -O0 is, and the
> proposed patch caters to -Og.  Eventually the -Og
> approach will win out; the only question is when
> and how to start the ball rolling.

If you can make it detect when to use macros and when to use functions so -O0 doesn't suffer, that is starting the ball rolling.  Otherwise it is setting up a brick wall for users/developers with older gcc.

	Jan D.

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