Messages in this thread Patch in this message | | | Date | Tue, 6 Jun 2017 13:36:24 -0700 (PDT) | From | David Rientjes <> | Subject | [patch resend] compiler, clang: suppress warning for unused static inline functions |
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GCC explicitly does not warn for unused static inline functions for -Wunused-function. The manual states:
Warn whenever a static function is declared but not defined or a non-inline static function is unused.
Clang does warn for static inline functions that are unused.
It turns out that suppressing the warnings avoids potentially complex #ifdef directives, which also reduces LOC.
Suppress the warning for clang.
Signed-off-by: David Rientjes <rientjes@google.com> --- This is a resend of my patch from http://marc.info/?t=149565969200006 that did not seem to end very productively, but I'm not in a position to insist.
include/linux/compiler-clang.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -15,3 +15,10 @@ * with any version that can compile the kernel */ #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) + +/* + * GCC does not warn about unused static inline functions for + * -Wunused-function. This turns out to avoid the need for complex #ifdef + * directives. Suppress the warning in clang as well. + */ +#define inline inline __attribute__((unused))
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