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Message-ID: <84144f020512020418x7ebf5e3bt54cde14ec6a7a954@mail.gmail.com>
Date: Fri, 2 Dec 2005 14:18:26 +0200
From: Pekka Enberg <penberg@cs.helsinki.fi>
To: Coywolf Qi Hunt <coywolf@gmail.com>
Subject: Re: Use enum to declare errno values
Cc: Denis Vlasenko <vda@ilport.com.ua>,
       "linux-os (Dick Johnson)" <linux-os@analogic.com>,
       Paul Jackson <pj@sgi.com>, francis_moreau2000@yahoo.fr,
       linux-kernel@vger.kernel.org
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Hi,

2005/12/2, Denis Vlasenko <vda@ilport.com.ua>:
> > There is another reason why enums are better than #defines:

On 12/2/05, Coywolf Qi Hunt <coywolf@gmail.com> wrote:
> This is a reason why enums are worse than #defines.
>
> Unlike in other languages, C enum is not much useful in practices.
> Maybe the designer wanted C to be as fancy as other languages?  C
> shouldn't have had enum imho. Anyway we don't have any strong motives
> to switch to enums.

I don't follow your reasoning. The naming collision is a real problem
with macros. With enum and const, the compiler can do proper checking
with meaningful error messages. Please explain why you think #define
is better for Denis' example?

                                     Pekka
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