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if __P is already defined, undef it.

This commit is contained in:
cgd 1993-09-23 23:44:09 +00:00
parent 6ce85383cd
commit 6c5f49d135
1 changed files with 6 additions and 1 deletions
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7
sys/sys/cdefs.h
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@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* from: @(#)cdefs.h 7.6 (Berkeley) 5/4/91
* $Id: cdefs.h,v 1.4 1993/05/26 14:52:56 cgd Exp $
* $Id: cdefs.h,v 1.5 1993/09/23 23:44:09 cgd Exp $
*/
#ifndef _SYS_CDEFS_H_
@ -52,6 +52,11 @@
* in between its arguments. __CONCAT can also concatenate double-quoted
* strings produced by the __STRING macro, but this only works with ANSI C.
*/
#ifdef __P /* get rid of previous definition of __P */
#undef __P
#endif
#if defined(__STDC__) || defined(__cplusplus)
#define __P(protos) protos /* full-blown ANSI C */
#define __CONCAT(x,y) x ## y