Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!pasteur!ucbvax!CORY.BERKELEY.EDU!dillon
From: dillon@CORY.BERKELEY.EDU (Matt Dillon)
Newsgroups: comp.sys.amiga
Subject: Re: malloc() prob. on 3.4a
Message-ID: <8804132311.AA05719@cory.Berkeley.EDU>
Date: 13 Apr 88 23:11:33 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Lines: 29

>main()
>{
>	struct def *head;
>
>	head = (struct def *) malloc(sizeof(struct def));
>
>Any help on how to get rid of this warning, would help.

	Because you ARE casting from an int to  a pointer... you need to
declare malloc as returning a pointer:

extern char *malloc();

	Or, if you don't want to bother with a cast, you can:

extern void *malloc();


Leo has kind of set a convention of making a lot of intuition funcs() return
void -->  void *OpenScreen().  Then in the code he has: s=OpenScreen(&sdef);
He might have a cast.  Anyways, why would you do this?  The compilier should
issue an error, you can't return values from a void func()? I understand
it has to do with 16 bit ints and what not.  Comments?

	He's returning a 'void *' ... not a void, but a pointer to a void.
That's an ANSI standard, I believe, meaning "pointer to anything".  It's
useful for things like AllocMem() and malloc(), but Leo's just being 
lazy if he's using it for OpenScreen().

				-Matt