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From: "neil at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug preprocessor/22168] #if #A == #B should have a diagnostic in ISO C mode
Date: Fri, 24 Jun 2005 22:24:00 -0000 [thread overview]
Message-ID: <20050624222424.727.qmail@sourceware.org> (raw)
In-Reply-To: <20050624020406.22168.geoffk@gcc.gnu.org>
------- Additional Comments From neil at gcc dot gnu dot org 2005-06-24 22:24 -------
(In reply to comment #6)
> Yup, it's documented. However, it's still silently accepted even with
-pedantic, and the language doesn't
> permit that.
My copy of the standard only requires a constant expression - can you point out
where you read its requiring an integer constant expression?
The standard explicitly permits extensions to constant expressions. Since this
extension is explicitly documented as for use in #if expressions, it should be
obvious that we intend #foo as a constant expression. No diagnostic is
therefore required.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22168
next prev parent reply other threads:[~2005-06-24 22:24 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-24 2:04 [Bug preprocessor/22168] New: #if #A == #B should have a diagnostic geoffk at gcc dot gnu dot org
2005-06-24 9:06 ` [Bug preprocessor/22168] " schwab at suse dot de
2005-06-24 14:56 ` neil at gcc dot gnu dot org
2005-06-24 15:19 ` geoffk at gcc dot gnu dot org
2005-06-24 15:26 ` schwab at suse dot de
2005-06-24 15:42 ` pinskia at physics dot uc dot edu
2005-06-24 15:42 ` [Bug preprocessor/22168] New: " Andrew Pinski
2005-06-24 18:02 ` [Bug preprocessor/22168] #if #A == #B should have a diagnostic in ISO C mode geoffk at gcc dot gnu dot org
2005-06-24 22:24 ` neil at gcc dot gnu dot org [this message]
2005-06-24 22:26 ` pinskia at gcc dot gnu dot org
2005-06-24 22:41 ` schwab at suse dot de
2005-06-24 23:09 ` joseph at codesourcery dot com
2005-06-25 22:11 ` jsm28 at gcc dot gnu dot org
[not found] <bug-22168-638@http.gcc.gnu.org/bugzilla/>
2006-12-29 2:54 ` tromey at gcc dot gnu dot org
2007-01-01 21:57 ` patchapp at dberlin dot org
2007-01-08 1:33 ` tromey at gcc dot gnu dot org
2007-05-21 8:54 ` manu at gcc dot gnu dot org
2008-02-26 20:49 ` tromey at gcc dot gnu dot org
2008-05-13 14:52 ` tromey at gcc dot gnu dot org
2008-05-13 15:22 ` tromey at gcc dot gnu dot org
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