linux-kernel - [PATCH] test_hexdump: Replace strncpy with memcpy

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Message-Id: <1530478650-20922-1-git-send-email-linux@roeck-us.net>
Date:   Sun,  1 Jul 2018 13:57:30 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     linux-kernel@...r.kernel.org
Cc:     Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH] test_hexdump: Replace strncpy with memcpy

gcc 8.1.0 complains:

lib/test_hexdump.c:84:3: warning:
	'strncpy' output truncated before terminating
	nul copying as many bytes from a string as its length
lib/test_hexdump.c:82:19: note: length computed here

Using strncpy() is indeed less than perfect since the length of data to
be copied has already been determined with strlen(). Replace strncpy()
with memcpy() to address the warning and optimize the code a little.

Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 lib/test_hexdump.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/test_hexdump.c b/lib/test_hexdump.c
index 3f415d8101f3..1c3c513add77 100644
--- a/lib/test_hexdump.c
+++ b/lib/test_hexdump.c
@@ -81,7 +81,7 @@ static void __init test_hexdump_prepare_test(size_t len, int rowsize,
 		const char *q = *result++;
 		size_t amount = strlen(q);
 
-		strncpy(p, q, amount);
+		memcpy(p, q, amount);
 		p += amount;
 
 		*p++ = ' ';
-- 
2.7.4