Sender:	rich AT phekda DOT freeserve DOT co DOT uk
Message-ID:	<3D04640C.98473EE9@phekda.freeserve.co.uk>
Date:	Mon, 10 Jun 2002 09:32:12 +0100
From:	Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
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To:	djgpp-workers AT delorie DOT com
Subject:	Re: Patches for building with gcc 3.1 - tests chunk
References:	<Pine DOT SUN DOT 3 DOT 91 DOT 1020610081018 DOT 21236D-100000 AT is>
Reply-To:	djgpp-workers AT delorie DOT com

Hello.

Eli Zaretskii wrote:
> 
> On Sun, 9 Jun 2002, Richard Dawe wrote:
> 
> > `-Wbad-function-cast (C only)'
> >      Warn whenever a function call is cast to a non-matching type.  For
> >      example, warn if `int malloc()' is cast to `anything *'.
> >
> > So when we cast rand()'s return value to a double, we get an error.
> 
> Are you saying that int and double do not match?  They are both
> arithmetic types, and the number of significant digits supported by a
> double (about 17) is more than enough to represent all 32-bit integers.

I didn't read the description properly - apologies. But removing
-Wbad-function-cast does eliminate the warning. I agree with you now that this
is a bug in gcc 3.1.
 
> > Do we actually need to cast the return value?
> 
> We need it to force the division to be done in floating point (as opposed
> to two integers).  But there are other ways of doing that, some of which
> I mentioned in this thread several days ago.

I've posted a new patch, using one of those methods.

Thanks, bye, Rich =]

-- 
Richard Dawe [ http://www.phekda.freeserve.co.uk/richdawe/ ]

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