From mboxrd@z Thu Jan  1 00:00:00 1970
From: gumbold <gumbold@bonbon.net>
Subject: Re: data structure question
Date: Mon, 16 May 2005 22:07:12 +0300
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To: Glynn Clements <glynn@gclements.plus.com>
Cc: linux-c-programming@vger.kernel.org

Glynn Clements wrote:

>gumbold wrote:
>
>  
>
>>So char abc[0] actualy pointer to chat?
>>    
>>
>
>No, it's an array of char.
>
>  
>
>>It should be 4 byte long on x86. I can't see it with sizeof.
>>    
>>
>
>It's zero bytes long.
>
>If you had:
>
>	struct abc {
>	    __u16 a;
>	    __u16 b;
>	    char abc[4];
>	};
>
>then sizeof(struct abc) would be 8 and the offset of abc from the
>beginning of the structure would be 4.
>
>With:
>
>	struct abc {
>	    __u16 a;
>	    __u16 b;
>	    char abc[0];
>	};
>
>sizeof(struct abc) would be 4 and the offset of abc from the beginning
>of the structure would still be 4 (i.e. p->abc refers to the first
>byte after the structure).
>
>  
>
Ok. i understand everything. thank you very much for help.