linux-kernel - [PATCH 4/5] The default CONFIG_BUG=n version of BUG() should have an empty do...while

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Message-ID: <20090415183456.11029.28756.stgit@warthog.procyon.org.uk>
Date:	Wed, 15 Apr 2009 19:34:56 +0100
From:	David Howells <dhowells@...hat.com>
To:	torvalds@...l.org, akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, David Howells <dhowells@...hat.com>
Subject: [PATCH 4/5] The default CONFIG_BUG=n version of BUG() should have an
	empty do...while

The default CONFIG_BUG=n version of BUG() must incorporate an empty a
do...while statement to avoid compilation weirdness.

Signed-off-by: David Howells <dhowells@...hat.com>
---

 include/asm-generic/bug.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)


diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 37b82cb..e727fe0 100644
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -88,7 +88,7 @@ extern void warn_slowpath(const char *file, const int line,
 
 #else /* !CONFIG_BUG */
 #ifndef HAVE_ARCH_BUG
-#define BUG()
+#define BUG() do {} while(0)
 #endif
 
 #ifndef HAVE_ARCH_BUG_ON

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