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Make the MAKEEXTRALIST macro safe to be called with string literals as

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third argument - the old version relies on the compiler to use the same
address for identical strings.

Spotted by segv at netctl dot net in libnbcompat context, details
in PR pkg/32097.
This commit is contained in:
martin 2005-11-18 08:32:46 +00:00
parent 46f7c8b9d2
commit 428522929f
1 changed files with 4 additions and 3 deletions
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7
lib/libc/gen/vis.c
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@ -1,4 +1,4 @@
/* $NetBSD: vis.c,v 1.33 2005/05/28 13:11:14 lukem Exp $ */
/* $NetBSD: vis.c,v 1.34 2005/11/18 08:32:46 martin Exp $ */
/*-
* Copyright (c) 1989, 1993
@ -64,7 +64,7 @@
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: vis.c,v 1.33 2005/05/28 13:11:14 lukem Exp $");
__RCSID("$NetBSD: vis.c,v 1.34 2005/11/18 08:32:46 martin Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
@ -100,8 +100,9 @@ __weak_alias(vis,_vis)
#define MAXEXTRAS 5
#define MAKEEXTRALIST(flag, extra, orig) \
#define MAKEEXTRALIST(flag, extra, orig_str) \
do { \
const char *orig = orig_str; \
const char *o = orig; \
char *e; \
while (*o++) \