This fixes another sparse splat.
>From 711131e2e16925970a67103156af1296993dbc93 Mon Sep 17 00:00:00 2001
From: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Date: Fri, 15 Apr 2011 13:28:16 +0900
Subject: [PATCH] define __must_be_array() for __CHECKER__
commit c5e631cf65f (ARRAY_SIZE: check for type) added __must_be_array().
but sparse can't parse this gcc extention.
Then, now make C=2 makes following sparse errors a lot.
kernel/futex.c:2699:25: error: No right hand side of '+'-expression
Because __must_be_array() is used for ARRAY_SIZE() macro and it is
used very widely.
This patch fixes it.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
---
include/linux/compiler-gcc.h | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index cb4c1eb..59e4028 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -34,8 +34,12 @@
__asm__ ("" : "=r"(__ptr) : "0"(ptr)); \
(typeof(ptr)) (__ptr + (off)); })
+#ifdef __CHECKER__
+#define __must_be_array(arr) 0
+#else
/* &a[0] degrades to a pointer: a different type from an array */
#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
+#endif
/*
* Force always-inline if the user requests it so via the .config,
--
1.7.3.1
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