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From: kevin@crash.cts.com (Kevin Hill)
Newsgroups: comp.sys.mac.programmer
Subject: Returning Addresses from functions
Message-ID: <7984@crash.cts.com>
Date: 14 Mar 91 03:49:43 GMT
Sender: root@crash.cts.com
Lines: 46


 
I wish to create functions that return a pointer to a memory location.
Similar to malloc.  However, whenever the calling function is not in the
same file as the pointer returning function, the address returned is only
4 bytes long.  I.e. if the address was originally
 Actual                               Returned
 0x1D1DFFFF                           0x0000FFFF
 0x3F175432                           0x00005432
 
it seems that only 4 bytes are returning from the function when it is
another .c file.  HOWEVER, when the calling function and the function 
itself are in the same .c file, there is not a problem.. The addresses
are returned correctly...
  Any ideas??
 
 
I am using The latest version of Think C 3.xxx (Yes I know Think C 4.0 is
out, but I am a college student and $60 buys a lot of beer :)    )
 
Here is a copy of the function that is returning the address.
 
struct 	hub		{
				Point		point;
			struct hub		*next;
				};
typedef	struct	hub		Hub,	*HubPtr,	**HubHandle;
 
 
HubPtr	cur_bhub(hub,flag)
	HubPtr	hub;
	int		flag;
{
	static	HubPtr	beg_hub;
	
	if (flag != 0)
		beg_hub = NULL;
	if (hub != NULL)
		beg_hub = hub;
	return(beg_hub);
}
 
 Thank you in advance 
 -Kevin