[Bug preprocessor/33907] Empty macro definitions not considered equal

[rguenther at suse dot de]

------- Comment #11 from rguenther at suse dot de  2007-11-26 09:56 -------
Subject: Re:  Empty macro definitions not considered
 equal

On Sun, 25 Nov 2007, manu at gcc dot gnu dot org wrote:

> ------- Comment #10 from manu at gcc dot gnu dot org  2007-11-25 22:59 -------
> (In reply to comment #8)
> > 
> > Tom can probably do this.  But I belive the patch will not work,
> > as CPP_PEDANTIC is set to true by the C++ frontend now.
> 
> BTW, the patch works for the revision I diffed against. The testcases included
> in the patch pass.

I see.  But sth changed in the cpp defaults for C++ in 4.3 as things
that were previously warnings (with 4.2) are now errors (with 4.3), such
as this one or the macro re-definition.

Richard.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33907