Re: Patches #219 - #224

[Pavel Machek]

Hi!

> > >  > #224:
> > >  > +#    define dump while(0)
> > >  > +#    define dprintf while(0)
> > >  >
> > >  > Are you sure that syntax is correct?
> > >
> > > According to me and a co-worker that used to be in compiler design, yes
> it
> > > is.
> > >
> > > What happens:
> > >     dprintf( "some format string: %s %d\n", s, n );
> > > gets translated to:
> > >     while(0);
> >
> > AFAICS it will translate to
> >
> > while(0)( "some format string" );
> >
> > That can't be right...
> 
> Both me and that co-worker overlooked the exact meaning of the argument(s)
> substitution, call it stupid. :-(

Actually, it is okay.

It's equivalent to

        while(0) { "some format string" };

which is correct, but seriously strange C.
                                                                        Pavel
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