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authorBorislav Petkov <bbpetkov@yahoo.de>2007-05-07 01:49:17 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 23:12:52 +0400
commit9490991482a2091a828d997adbc088e24c310a4d (patch)
treedcdd9febee63e82cd792250a8a4c4dd8e6aab4be /include/linux/compiler-intel.h
parenta8127717cb24be7b8827a8d9e0ddbfde6b392146 (diff)
downloadlinux-9490991482a2091a828d997adbc088e24c310a4d.tar.xz
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 <bbpetkov@yahoo.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/compiler-intel.h')
-rw-r--r--include/linux/compiler-intel.h2
1 files changed, 2 insertions, 0 deletions
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