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Date: Wed, 24 Sep 2014 02:35:52 -0400
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From: DJ Delorie <dj AT delorie DOT com>
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	Paubert on Wed, 24 Sep 2014 08:21:44 +0200)
Subject: Re: [geda-user] Banging my head against the guile-for-windows wall
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> > This is ugly but if void * and int are the same size it is harmless.

I've seen way too many platforms where pointers and "int" are
different sizes, to give this one a pass...

Worse, on the msp430, large-model pointers are neither int-sized nor
long-sized.  Not that gEDA will ever run on an msp430 ;-)

> I consider this one a spurious warning, it may probably be silenced by inserting
> an useless and ugly cast, but I really wonder on which drugs the compiler
> writers were when they decided to add it. You should always be able to pass
> a non-const argument to a const parameter.

You're confusing a const argument with an argument which is a *pointer
to* a const value.  It's the latter that gcc is warning about, because
the pointed-to types are different.

One could still argue that gcc should ignore pointer-to-nonconst
passed as pointer-to-const (and perhaps the trunk gcc does) but
otherwise the logic is sane - the pointers point to different types.
It's like passing "struct foo *" when the function wants "struct bar *".