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wcsdup(3): use reallocarr to catch integer overflow

This commit is contained in:
nia 2021-10-29 10:11:57 +00:00
parent 0808e61c56
commit 46bf9c16cb
1 changed files with 4 additions and 4 deletions
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8
lib/libc/string/wcsdup.c
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@ -1,4 +1,4 @@
/* $NetBSD: wcsdup.c,v 1.3 2008/05/26 13:17:48 haad Exp $ */
/* $NetBSD: wcsdup.c,v 1.4 2021/10/29 10:11:57 nia Exp $ */
/*
* Copyright (C) 2006 Aleksey Cheusov
@ -14,7 +14,7 @@
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: wcsdup.c,v 1.3 2008/05/26 13:17:48 haad Exp $");
__RCSID("$NetBSD: wcsdup.c,v 1.4 2021/10/29 10:11:57 nia Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
@ -33,9 +33,9 @@ wcsdup(const wchar_t *str)
_DIAGASSERT(str != NULL);
len = wcslen(str) + 1;
copy = malloc(len * sizeof (wchar_t));
if (!copy)
copy = NULL;
if (reallocarr(&copy, len, sizeof(wchar_t)) != 0)
return NULL;
return wmemcpy(copy, str, len);