This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: [RFC] Builtin infrastructure change

From: Michael Meissner <meissner at linux dot vnet dot ibm dot com>
To: "Joseph S. Myers" <joseph at codesourcery dot com>
Cc: Michael Meissner <meissner at linux dot vnet dot ibm dot com>, gcc-patches at gcc dot gnu dot org, dje dot gcc at gmail dot com
Date: Wed, 14 Sep 2011 12:08:47 -0400
Subject: Re: [RFC] Builtin infrastructure change
References: <20110913232752.GA17828@hungry-tiger.westford.ibm.com> <Pine.LNX.4.64.1109141427570.23548@digraph.polyomino.org.uk>

On Wed, Sep 14, 2011 at 02:33:12PM +0000, Joseph S. Myers wrote:
> On Tue, 13 Sep 2011, Michael Meissner wrote:
> 
> > 	implicit_built_in_decls to the new macros/functions, and poison
> > 	the old names. Make sure 0 is not a legitimate builtin index.
> 
> I think the poisoning belongs in system.h; direct dependencies on the host 
> compiler (such as GCC_VERSION and __GNUC__ tests) should be kept as local 
> as possible, in just a few headers such as system.h and hwint.h, with 
> other places testing feature macros defined in system.h (or through 
> autoconf) if it's really necessary to have such dependencies there.

Ok, I wasn't sure where the best place to put the poison.  System.h sounds like
the best place.

-- 
Michael Meissner, IBM
5 Technology Place Drive, M/S 2757, Westford, MA 01886-3141, USA
meissner@linux.vnet.ibm.com	fax +1 (978) 399-6899

References:
- [RFC] Builtin infrastructure change
  - From: Michael Meissner
- Re: [RFC] Builtin infrastructure change
  - From: Joseph S. Myers

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]