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mem.c revision 1.18 
      1 /*	$NetBSD: mem.c,v 1.18 2021/08/28 13:29:26 rillig Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994, 1995 Jochen Pohl
      5  * All Rights Reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed by Jochen Pohl for
     18  *	The NetBSD Project.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #if HAVE_NBTOOL_CONFIG_H
     35 #include "nbtool_config.h"
     36 #endif
     37 
     38 #include <sys/cdefs.h>
     39 #if defined(__RCSID) && !defined(lint)
     40 __RCSID("$NetBSD: mem.c,v 1.18 2021/08/28 13:29:26 rillig Exp $");
     41 #endif
     42 
     43 #include <stdarg.h>
     44 #include <stdlib.h>
     45 #include <string.h>
     46 
     47 #include "lint.h"
     48 
     49 static void *
     50 not_null(void *ptr)
     51 {
     52 
     53 	if (ptr == NULL)
     54 		errx(1, "virtual memory exhausted");
     55 	return ptr;
     56 }
     57 
     58 void *
     59 xmalloc(size_t s)
     60 {
     61 
     62 	return not_null(malloc(s));
     63 }
     64 
     65 void *
     66 xcalloc(size_t n, size_t s)
     67 {
     68 
     69 	return not_null(calloc(n, s));
     70 }
     71 
     72 void *
     73 xrealloc(void *p, size_t s)
     74 {
     75 
     76 	return not_null(realloc(p, s));
     77 }
     78 
     79 char *
     80 xstrdup(const char *s)
     81 {
     82 
     83 	return not_null(strdup(s));
     84 }
     85 
     86 #if defined(IS_XLINT)
     87 char *
     88 xasprintf(const char *fmt, ...)
     89 {
     90 	char *str;
     91 	int e;
     92 	va_list ap;
     93 
     94 	va_start(ap, fmt);
     95 	e = vasprintf(&str, fmt, ap);
     96 	va_end(ap);
     97 	if (e < 0)
     98 		(void)not_null(NULL);
     99 	return str;
    100 }
    101 #endif
    102