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Annotation of 43BSDReno/lib/libpc/DISPOSE.c, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1979 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: static char sccsid[] = "@(#)DISPOSE.c  1.4 (Berkeley) 4/9/90";
        !            22: #endif /* not lint */
        !            23: 
        !            24: #include       "h00vars.h"
        !            25: 
        !            26: DISPOSE(var, siz)
        !            27:        register char   **var;  /* pointer to pointer being deallocated */
        !            28:        long            siz;    /* sizeof(bletch) */
        !            29: {
        !            30:        register int size = siz;
        !            31: 
        !            32:        if (*var == 0 || *var + size > _maxptr || *var < _minptr) {
        !            33:                ERROR("Pointer value out of legal range\n", 0);
        !            34:                return;
        !            35:        }
        !            36:        free(*var);
        !            37:        if (*var == _minptr)
        !            38:                _minptr += size;
        !            39:        if (*var + size == _maxptr)
        !            40:                _maxptr -= size;
        !            41:        *var = (char *)(0);
        !            42: }

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