usr/src/usr.bin/pascal/libpc/DISPOSE.c

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

static char sccsid[] = "@(#)DISPOSE.c 1.1 %G%";

#include        "h00vars.h"
#include        "h01errs.h"

DISPOSE(var, size)
        register char   **var;  /* pointer to pointer being deallocated */
        int             size;   /* sizeof(bletch) */
{
        if (*var == 0 || *var + size > _maxptr || *var < _minptr) {
                ERROR(ENILPTR,0);
                return;
        }
        free(*var);
        if (*var == _minptr)
                _minptr += size;
        if (*var + size == _maxptr)
                _maxptr -= size;
        *var = (char *)(0);
}