From 167d8bb8302170676f0e15123738e333383fec7b Mon Sep 17 00:00:00 2001
From: Jes Sorensen <jsorensen@fb.com>
Date: Tue, 29 May 2018 16:09:47 -0400
Subject: [RHEL7.5 PATCH 12/26] super-intel: Use memcpy() to avoid confusing
 gcc

When added :0 to serial number and copying it back, use memcpy()
instead of strncpy() as we know the actual length. This stops gcc
from complaining with -Werror=stringop-truncation enabled

Signed-off-by: Jes Sorensen <jsorensen@fb.com>
---
 super-intel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/super-intel.c b/super-intel.c
index 449da1d..ec7683d 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -8098,7 +8098,7 @@ static int mark_failure(struct intel_super *super,
 	strcat(buf, ":0");
 	if ((len = strlen(buf)) >= MAX_RAID_SERIAL_LEN)
 		shift = len - MAX_RAID_SERIAL_LEN + 1;
-	strncpy((char *)disk->serial, &buf[shift], MAX_RAID_SERIAL_LEN);
+	memcpy(disk->serial, &buf[shift], len + 1 - shift);
 
 	disk->status |= FAILED_DISK;
 	set_imsm_ord_tbl_ent(map, slot, idx | IMSM_ORD_REBUILD);
-- 
2.7.4