update from John Gilmore for gcc

[unix-history] / usr / src / usr.bin / pascal / libpc / NIL.c

/* Copyright (c) 1979 Regents of the University of California */

static char sccsid[] = "@(#)NIL.c 1.4 %G%";

#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;
}