From 9490991482a2091a828d997adbc088e24c310a4d Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Sun, 6 May 2007 14:49:17 -0700 Subject: Add unitialized_var() macro for suppressing gcc warnings Introduce a macro for suppressing gcc from generating a warning about a probable uninitialized state of a variable. Example: - spinlock_t *ptl; + spinlock_t *uninitialized_var(ptl); Not a happy solution, but those warnings are obnoxious. - Using the usual pointlessly-set-it-to-zero approach wastes several bytes of text. - Using a macro means we can (hopefully) do something else if gcc changes cause the `x = x' hack to stop working - Using a macro means that people who are worried about hiding true bugs can easily turn it off. Signed-off-by: Borislav Petkov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compiler-intel.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/compiler-intel.h') diff --git a/include/linux/compiler-intel.h b/include/linux/compiler-intel.h index 1d1c3ceaff4e..a436eea43912 100644 --- a/include/linux/compiler-intel.h +++ b/include/linux/compiler-intel.h @@ -22,3 +22,5 @@ (typeof(ptr)) (__ptr + (off)); }) #endif + +#define uninitialized_var(x) x -- cgit v1.2.3