RE: [PATCH] Make large enum constants unsigned

["Pierre Muller" <pierre.muller@ics-cnrs.unistra.fr>]

  Couldn't we support 64-bit constants already,
by adding
+						       (if (> (cadr e)
+							      #x100000000)
+							   "LL" ""))
Right after the conditional "U" postfix?

This way, the pre C-99 standard would only be violated when
it is really required anyhow, no?

Pierre Muller

> -----Message d'origine-----
> De : Stefan Kristiansson [mailto:stefan.kristiansson@saunalahti.fi]
> Envoyé : jeudi 22 mai 2014 09:10
> À : Maciej W. Rozycki
> Cc : cgen@sourceware.org; Alan Modra; fche@sourceware.org; Christian
> Svensson; Pierre Muller
> Objet : Re: [PATCH] Make large enum constants unsigned
> 
> On Thu, May 22, 2014 at 09:52:50AM +0300, Stefan Kristiansson wrote:
> >
> > As for 'u' vs 'U', a 'U' is emitted in the .h file even if I put a
> 'u'
> > in the .scm.
> > If 'u' in the output is preferred, maybe someone can point out the
> > reason for this?
> >
> 
> I found the reason, there's a 'string-upcase' a couple of rows above
> what the patch touches.
> I'm not sure getting around that is worth pursuing though?
> 
> Anyway, below is the updated patch.
> 
> 2014-05-22  Stefan Kristiansson  <stefan.kristiansson@saunalahti.fi>
> 
> 	* enum.scm (gen-enum-decl): Emit 'U' after constants larger than
> 	 #x80000000
> 
> Index: cgen/enum.scm
> ===================================================================
> RCS file: /cvs/src/src/cgen/enum.scm,v
> retrieving revision 1.13
> diff -u -r1.13 enum.scm
> --- cgen/enum.scm	13 Feb 2010 03:39:15 -0000	1.13
> +++ cgen/enum.scm	22 May 2014 07:09:00 -0000
> @@ -298,7 +298,10 @@
>  		     ""
>  		     (string-append " = "
>  				    (if (number? (cadr e))
> -					(number->string (cadr e))
> +					(string-append (number->string (cadr
e))
> +						       (if (> (cadr e)
> +							      #x80000000)
> +							   "U" ""))
>  					(cadr e))))
>  		 ))
>  	       (if (and san? include-sanitize-marker?)