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Leave room for the null terminator. Spotted by DuClare on freenode.

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This commit is contained in:
dholland 2016-12-07 02:36:41 +00:00
parent 319746a2a5
commit f118bedc12
1 changed files with 3 additions and 3 deletions
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6
lib/libc/net/linkaddr.c
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@ -1,4 +1,4 @@
/* $NetBSD: linkaddr.c,v 1.17 2016/12/06 18:41:02 christos Exp $ */
/* $NetBSD: linkaddr.c,v 1.18 2016/12/07 02:36:41 dholland Exp $ */
/*-
* Copyright (c) 1990, 1993
@ -34,7 +34,7 @@
#if 0
static char sccsid[] = "@(#)linkaddr.c 8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: linkaddr.c,v 1.17 2016/12/06 18:41:02 christos Exp $");
__RCSID("$NetBSD: linkaddr.c,v 1.18 2016/12/07 02:36:41 dholland Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
@ -148,7 +148,7 @@ link_ntoa(const struct sockaddr_dl *sdl)
#define ADDC(ch) \
do { \
if (out >= obuf + sizeof(obuf)) \
if (out >= obuf + sizeof(obuf) - 1) \
return NULL; \
*out++ = (ch); \
} while (/*CONSTCOND*/0)