linux-kernel - [PATCH] kunit: fix -Wunused-function warning for __kunit_fail_current

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Date:   Tue,  6 Apr 2021 10:29:01 -0700
From:   Daniel Latypov <dlatypov@...gle.com>
To:     brendanhiggins@...gle.com
Cc:     davidgow@...gle.com, linux-kernel@...r.kernel.org,
        kunit-dev@...glegroups.com, linux-kselftest@...r.kernel.org,
        skhan@...uxfoundation.org, sfr@...b.auug.org.au,
        Daniel Latypov <dlatypov@...gle.com>
Subject: [PATCH] kunit: fix -Wunused-function warning for __kunit_fail_current_test

When CONFIG_KUNIT is not enabled, __kunit_fail_current_test() an empty
static function.

But GCC complains about unused static functions, *unless* they're static inline.
So add inline to make GCC happy.

Signed-off-by: Daniel Latypov <dlatypov@...gle.com>
Fixes: 359a376081d4 ("kunit: support failure from dynamic analysis tools")
---
 include/kunit/test-bug.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/kunit/test-bug.h b/include/kunit/test-bug.h
index ce6f6edc7801..5fc58081d511 100644
--- a/include/kunit/test-bug.h
+++ b/include/kunit/test-bug.h
@@ -19,8 +19,8 @@ extern __printf(3, 4) void __kunit_fail_current_test(const char *file, int line,
 
 #else
 
-static __printf(3, 4) void __kunit_fail_current_test(const char *file, int line,
-						    const char *fmt, ...)
+static inline __printf(3, 4) void __kunit_fail_current_test(const char *file, int line,
+							    const char *fmt, ...)
 {
 }
 

base-commit: 359a376081d4fadfb073e3ddeb6bd6dc94d98341
-- 
2.31.0.208.g409f899ff0-goog