linux-kernel - [PATCH] kasan: remove redundant initialization of variable 'real

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Message-Id: <20180206144950.32457-1-colin.king@canonical.com>
Date:   Tue,  6 Feb 2018 14:49:50 +0000
From:   Colin King <colin.king@...onical.com>
To:     Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>, kasan-dev@...glegroups.com
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] kasan: remove redundant initialization of variable 'real_size'

From: Colin Ian King <colin.king@...onical.com>

Variable real_size is initialized with a value that is never read,
it is re-assigned a new value later on, hence the initialization is
redundant and can be removed.

Cleans up clang warning:
lib/test_kasan.c:422:21: warning: Value stored to 'real_size' during
its initialization is never read

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 lib/test_kasan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/test_kasan.c b/lib/test_kasan.c
index a808d81b409d..dba0ffd45fd7 100644
--- a/lib/test_kasan.c
+++ b/lib/test_kasan.c
@@ -419,7 +419,7 @@ static noinline void __init kasan_stack_oob(void)
 static noinline void __init ksize_unpoisons_memory(void)
 {
 	char *ptr;
-	size_t size = 123, real_size = size;
+	size_t size = 123, real_size;
 
 	pr_info("ksize() unpoisons the whole allocated chunk\n");
 	ptr = kmalloc(size, GFP_KERNEL);
-- 
2.15.1