1 /* $NetBSD: mem.c,v 1.21 2023/01/13 19:41:50 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) 40 __RCSID("$NetBSD: mem.c,v 1.21 2023/01/13 19:41:50 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