1 /* $NetBSD: wcsdup.c,v 1.5 2021/10/29 11:03:46 nia Exp $ */ 2 3 /* 4 * Copyright (C) 2006 Aleksey Cheusov 5 * 6 * This material is provided "as is", with absolutely no warranty expressed 7 * or implied. Any use is at your own risk. 8 * 9 * Permission to use or copy this software for any purpose is hereby granted 10 * without fee. Permission to modify the code and to distribute modified 11 * code is also granted without any restrictions. 12 */ 13 14 #include <sys/cdefs.h> 15 16 #if defined(LIBC_SCCS) && !defined(lint) 17 __RCSID("$NetBSD: wcsdup.c,v 1.5 2021/10/29 11:03:46 nia Exp $"); 18 #endif /* LIBC_SCCS and not lint */ 19 20 #include "namespace.h" 21 #include <stdlib.h> 22 #include <assert.h> 23 #include <errno.h> 24 #include <wchar.h> 25 26 __weak_alias(wcsdup,_wcsdup) 27 28 wchar_t * 29 wcsdup(const wchar_t *str) 30 { 31 wchar_t *copy; 32 size_t len; 33 34 _DIAGASSERT(str != NULL); 35 36 len = wcslen(str) + 1; 37 38 copy = NULL; 39 if (reallocarr(©, len, sizeof(wchar_t)) != 0) { 40 errno = ENOMEM; 41 return NULL; 42 } 43 44 return wmemcpy(copy, str, len); 45 } 46