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/* (C) Copyright 1993,1994 by Carnegie Mellon University | 
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 * All Rights Reserved. | 
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 * | 
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 * Permission to use, copy, modify, distribute, and sell this software | 
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 * and its documentation for any purpose is hereby granted without | 
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 * fee, provided that the above copyright notice appear in all copies | 
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 * and that both that copyright notice and this permission notice | 
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 * appear in supporting documentation, and that the name of Carnegie | 
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 * Mellon University not be used in advertising or publicity | 
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 * pertaining to distribution of the software without specific, | 
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 * written prior permission.  Carnegie Mellon University makes no | 
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 * representations about the suitability of this software for any | 
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 * purpose.  It is provided "as is" without express or implied | 
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 * warranty. | 
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 * | 
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 * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO | 
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 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY | 
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 * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE | 
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 * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | 
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 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN | 
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 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING | 
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 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | 
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 * SOFTWARE. | 
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 */ | 
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#include <stdio.h> | 
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#include <stdlib.h> | 
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#include <string.h> | 
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 | 
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char *xmalloc (int size) | 
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{ | 
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    char *ret; | 
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 | 
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    if ((ret = malloc((unsigned) size))) | 
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      return ret; | 
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 | 
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    fprintf(stderr, "Memory exhausted\n"); | 
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    exit(1); | 
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} | 
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 | 
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 | 
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char *xrealloc (char *ptr, int size) | 
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{ | 
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    char *ret; | 
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 | 
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    /* xrealloc (NULL, size) behaves like xmalloc (size), as in ANSI C */ | 
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    if ((ret = !ptr ? malloc ((unsigned) size) : realloc (ptr, (unsigned) size))) | 
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      return ret; | 
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 | 
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    fprintf(stderr, "Memory exhausted\n"); | 
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    exit(1); | 
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} | 
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 | 
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char *strsave(char *str) | 
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{ | 
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    char *p = xmalloc(strlen(str)+1); | 
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    strcpy(p, str); | 
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    return p; | 
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} |