Path: utzoo!mnetor!tmsoft!dptcdc!lethe!drew
From: drew@lethe.UUCP (Drew Sullivan)
Newsgroups: comp.std.c
Subject: Multiple typedefs
Keywords: typedefs, includes
Message-ID: <2322@lethe.UUCP>
Date: 25 Apr 89 18:46:50 GMT
Organization: Systems Software
Lines: 24

Under ANSI-C the I think that the following is legal:

+------------------------------------------------------------
| #define foo_t	unsigned int		/* from include file 1 */
| extern foo_t foo(void);
| 
| #define foo_t	unsigned int		/* from include file 2 */
| extern foo_t foo(void);
+------------------------------------------------------------

But, is the following legal:

+------------------------------------------------------------
| typedef unsigned int foo_t;		/* from include file 1 */
| extern foo_t foo(void);
| 
| typedef unsigned int foo_t;		/* from include file 2 */
| extern foo_t foo(void);
+------------------------------------------------------------

If it is not legal how do we guard the multiple typedefs.
Do we use #ifdefs, and if so, are there to be any conventions.
-- 
  -- Drew Sullivan, <drew@lethe.uucp>