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From: Chris Faylor <cgf AT cygnus DOT com>
Date: Mon, 13 Mar 2000 13:06:25 -0500
To: cygwin AT sourceware DOT cygnus DOT com
Subject: Re: bug in ctype.h
Message-ID: <20000313130625.A2249@cygnus.com>
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References: <38CD205F DOT 1ADDE77B AT mindmaker DOT hu> <20000313125547 DOT B1933 AT cygnus DOT com> <38CD2C3C DOT 5B308FA5 AT mindmaker DOT hu>
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In-Reply-To: <38CD2C3C.5B308FA5@mindmaker.hu>; from !spam-lfarkas@mindmaker.hu on Mon, Mar 13, 2000 at 06:58:20PM +0100

On Mon, Mar 13, 2000 at 06:58:20PM +0100, Levente Farkas wrote:
>Chris Faylor wrote:
>> 
>> On Mon, Mar 13, 2000 at 06:07:43PM +0100, Levente Farkas wrote:
>> >hi,
>> >I thing it's a real bug in ctype.h in cygwin:
>> >-------------
>> >#define _U  01
>> >#define _L  02
>> >#define _N  04
>> >#define _S  010
>> >#define _P  020
>> >#define _C  040
>> >#define _X  0100
>> >#define _B  0200
>> >--------------
>> >and there is no undef pair of these defines. ok you can use every
>> >name with starts with _, but it's a real nightmare (the _X is the
>> >worst).
>> 
>> Um, how would you undef these?  They're used in macros.
>
>that's another problem:-)
>but simple after use
>#undef _X

Are you actually saying that you want to do something like this:

#include <ctype.h>

main(int argc, char **argv)
{
  printf ("%d", isalpha(*argv[0]));
#undef _U
#undef _L
#undef _N
#undef _S
#undef _P
#undef _C
#undef _X
#undef _B

Somehow, I don't see the point.

If you're advocating that these be undefined in ctype.h, then:

That won't work.

>>It was my understanding that symbols that begin with "_" were supposed
>>to be the province of a system library and are not supposed to be used
>>by user programs.  Or was it "__".  I can never remember.
>
>almost both, but such a macros are anoying anyway.

Uh huh.

cgf

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