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protect against null.

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This commit is contained in:
christos 2007-07-07 17:53:13 +00:00
parent 69dbd2e45e
commit 68a6fb4652
1 changed files with 3 additions and 4 deletions
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7
usr.bin/mail/format.c
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@ -1,4 +1,4 @@
/* $NetBSD: format.c,v 1.5 2007/07/06 20:14:33 christos Exp $ */
/* $NetBSD: format.c,v 1.6 2007/07/07 17:53:13 christos Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
@ -38,7 +38,7 @@
#include <sys/cdefs.h>
#ifndef __lint__
__RCSID("$NetBSD: format.c,v 1.5 2007/07/06 20:14:33 christos Exp $");
__RCSID("$NetBSD: format.c,v 1.6 2007/07/07 17:53:13 christos Exp $");
#endif /* not __lint__ */
#include <time.h>
@ -801,8 +801,7 @@ protect(const char *str)
char *p, *q;
size_t size;
size = strlen(str);
if (size == 0)
if (str == NULL || (size = strlen(str)) == 0)
return str;
p = salloc(2 * size);