Date: Mon, 21 Apr 2003 11:09:17 -0700 From: Terry Lambert <tlambert2@mindspring.com> To: Alexander Pohoyda <alexander.pohoyda@gmx.net> Cc: David O'Brien <obrien@FreeBSD.org> Subject: Re: HEADS UP: UFS2 now the default creation type on 5.0-CURRENT Message-ID: <3EA433CD.145ECB20@mindspring.com> References: <20030420192319.GB4963@HAL9000.homeunix.com> <Pine.NEB.3.96L.1030420174551.16891t-100000@fledge.watson.org> <87r87wawmx.fsf@oak.pohoyda.family>
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Alexander Pohoyda wrote:
> > +ufs2_daddr_t
> > +__cgbase(struct fs *fs, int32_t c)
> > +{
> > + return cgbase(fs, c);
> > +}
> > #undef cgbase
> > -#define cgbase(fs, c) ((ufs2_daddr_t)((fs)->fs_fpg * (c)))
> > +#define cgbase __cgbase
>
> Looks like recursion here.
It's not. In the C language, "#define" values are only in
scope after their definition. The effect of the above code
is to wrap the implicit cast of (ufs2_daddr_t). The cgbase()
that gets called in __cgbase() is not the cgbase() #defined
later.
-- Terry
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