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From: "MikeC" <My_address AT end DOT of DOT post>
Newsgroups: comp.os.msdos.djgpp
References:  <TfIBi.37363$rr5 DOT 32521 AT newsfe1-win DOT ntli DOT net> <200708302337 DOT l7UNb83E010710 AT envy DOT delorie DOT com>
Subject: Re: struct vs. typedef struct
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Date: Fri, 31 Aug 2007 20:35:55 GMT
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Scott and DJ,

Once again, thanks for your help.  Sorry I didn't find it in the FAQ - I did 
look, but I guess, not enough.

All of the Best,

Mike.

BTW, isn't this a moderated group?  Couldn't all that "MI5 Persecution" 
stuff just be deleted?  I didn't read all of it, but it didn't seem to have 
much relevance to DJGPP or to C.

"DJ Delorie" <dj AT delorie DOT com> wrote in message 
news:200708302337 DOT l7UNb83E010710 AT envy DOT delorie DOT com...
>
>> I'm not sure whether this is a DJGPP question or a C question,
>
> It's a C question.
>
>> but I think the problem is due to the single-pass compilation of
>> DJGPP.
>
> Nope.
>
>> ... the compiler doesn't like it, I guess because when it encounters 
>> *next,
>> it hasn't seen the reference to S yet.
>
> typedet struct S1
> {
>  struct S1 *next;
> } S2;
>
> You can't use a typedef (S2) until after it's defined.  You can use a
> struct (S1) without a full reference; a typedef like the above can
> include a struct definition (S1) and a "forward" struct usage (struct
> S1 ...).
>
> Normally, you'd use the same name for S1 and S2 in the example above.