Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!ukc!stc!rmj
From: rmj@tcom.stc.co.uk (Rhodri James)
Newsgroups: comp.lang.c
Subject: Re: Pointer Problems
Message-ID: <1872@jura.tcom.stc.co.uk>
Date: 20 Aug 90 17:47:00 GMT
References: <UamezZm00WB0EGzUo0@andrew.cmu.edu>
Reply-To: rmj@htc2.UUCP (Rhodri James)
Organization: STC Telecomms, Harlow Technical Centre, Harlow
Lines: 39

In article <UamezZm00WB0EGzUo0@andrew.cmu.edu> gh1r+@andrew.cmu.edu (Gaurang Hirpara) writes:
>
>
>
>I got a variety of solutions, but perhaps I didn't state the problem clearly.
>The form ((StructName *)Something)->x=100 works. 
>However, the format I need is this type:
>
>TopLevel->Secondary->Something->x=100;
>
>i.e. I can't do the casting in the middle of the dereference. It won't let
>me no matter which way I do it. Toplevel contains a pointer to
>Secondary, which contains Something. Something initially points to a
>void *. 

Am I missing something? Shouldn't

  ((StructName *)(TopLevel->Secondary->Something))->x=100;

work? Or if all else fails you can hold the pointer to cast in a
temporary variable of type void *, such as;

   void *Tempthing;
   .
   .
   Tempthing = TopLevel->Secondary->Something;
   ((StructName *)Tempthing)->x=100;

Not very pleasant, I will admit, but it should work

Rhodri

Disclaimer: These ideas are mine, mine, all mine. The company doesn't
know that I think, never mind what I think.
-- 
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