linux-kernel - [PATCH v3 10/10] bug.h: Convert BUILD_BUG{,_ON} to use BUILD_BUG_ON

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1351096441-12388-10-git-send-email-daniel.santos@pobox.com>
Date:	Wed, 24 Oct 2012 11:34:01 -0500
From:	danielfsantos@....net
To:	LKML <linux-kernel@...r.kernel.org>,
	Andi Kleen <ak@...ux.intel.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christopher Li <sparse@...isli.org>,
	Daniel Santos <daniel.santos@...ox.com>,
	David Daney <david.daney@...ium.com>,
	David Howells <dhowells@...hat.com>,
	Joe Perches <joe@...ches.com>,
	Josh Triplett <josh@...htriplett.org>,
	Konstantin Khlebnikov <khlebnikov@...nvz.org>,
	linux-sparse@...r.kernel.org,
	Michel Lespinasse <walken@...gle.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Pavel Pisa <pisa@....felk.cvut.cz>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Steven Rostedt <rostedt@...dmis.org>,
	Borislav Petkov <bp@...en8.de>,
	David Rientjes <rientjes@...gle.com>
Subject: [PATCH v3 10/10] bug.h: Convert BUILD_BUG{,_ON} to use BUILD_BUG_ON_MSG

Remove duplicate code by converting BUILD_BUG and BUILD_BUG_ON to just
call BUILD_BUG_ON_MSG.  This not only reduces source code bloat, but
also prevents the possibility of code being changed for one macro and
not for the other (which was previously the case for BUILD_BUG and
BUILD_BUG_ON).

Signed-off-by: Daniel Santos <daniel.santos@...ox.com>
---
 include/linux/bug.h |   17 +++--------------
 1 files changed, 3 insertions(+), 14 deletions(-)

diff --git a/include/linux/bug.h b/include/linux/bug.h
index f6f81f6..c791d2a 100644
--- a/include/linux/bug.h
+++ b/include/linux/bug.h
@@ -80,14 +80,8 @@ struct pt_regs;
 #ifndef __OPTIMIZE__
 #define BUILD_BUG_ON(condition) __compiletime_error_fallback(condition)
 #else
-#define BUILD_BUG_ON(condition)						\
-	do {								\
-		extern void __build_bug_on_failed(void)			\
-			__compiletime_error("BUILD_BUG_ON failed");	\
-		__compiletime_error_fallback(condition);		\
-		if (condition)						\
-			__build_bug_on_failed();			\
-	} while(0)
+#define BUILD_BUG_ON(condition) \
+	BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
 #endif
 
 /**
@@ -97,12 +91,7 @@ struct pt_regs;
  * build time, you should use BUILD_BUG to detect if it is
  * unexpectedly used.
  */
-#define BUILD_BUG()						\
-	do {							\
-		extern void __build_bug_failed(void)		\
-			__compiletime_error("BUILD_BUG failed");\
-		__build_bug_failed();				\
-	} while (0)
+#define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
 
 #endif	/* __CHECKER__ */
 
-- 
1.7.3.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/