forward references in typedefs

[David Goodenough]

henry at utzoo.uucp (Henry Spencer) sez:
> The latter.  The language permits forward references with structure tags
> (specifically, "struct foo *x;" when foo has not yet been seen) but not
> the equivalent with typedefs.  That's just the way it is.
> 
> (Oh, you want to know *why*?  Basically, because typedefs are a royal pain
> to parse at the best of times, and forward references just complicate the
> issue hopelessly.

Also, have you considered the following:

typedef	a *b;

typedef b *a;

There, now your compiler is _REALLY_ confused :-)
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