BSD 4_3_Reno release
[unix-history] / usr / src / lib / libpc / NIL.c
/*-
* Copyright (c) 1979 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that: (1) source distributions retain this entire copyright
* notice and comment, and (2) distributions including binaries display
* the following acknowledgement: ``This product includes software
* developed by the University of California, Berkeley and its contributors''
* in the documentation or other materials provided with the distribution
* and in all advertising materials mentioning features or use of this
* software. Neither the name of the University nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static char sccsid[] = "@(#)NIL.c 1.5 (Berkeley) 4/9/90";
#endif /* not lint */
#include "h00vars.h"
char ENIL[] = "Pointer value out of legal range\n";
char *
NIL(ptr)
char *ptr; /* pointer to struct */
{
if (ptr > _maxptr || ptr < _minptr) {
ERROR(ENIL, 0);
}
return ptr;
}