On 03/22/14 09:21, Sam Ravnborg wrote:
On Sat, Mar 22, 2014 at 08:48:19AM -0700, [email protected] wrote:
From: Behan Webster <[email protected]>
Fix uninitialized return code in default case in cmpxchg-local.h
This patch fixes the code to prevent an uninitialized return value that is
detected
when compiling with clang. The bug produces numerous warnings when compiling the
Linux kernel with clang.
Signed-off-by: Behan Webster <[email protected]>
Signed-off-by: Mark Charlebois <[email protected]>
---
include/asm-generic/cmpxchg-local.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/asm-generic/cmpxchg-local.h
b/include/asm-generic/cmpxchg-local.h
index d8d4c89..9112111 100644
--- a/include/asm-generic/cmpxchg-local.h
+++ b/include/asm-generic/cmpxchg-local.h
@@ -41,6 +41,7 @@ static inline unsigned long __cmpxchg_local_generic(volatile
void *ptr,
break;
default:
wrong_size_cmpxchg(ptr);
+ __builtin_unreachable();
It is unreachable() - see compiler.h
Oh I see.
Behan
--
Behan Webster
[email protected]
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