From: Boris Egorov <egorov@linux.com>
Date: Tue, 19 Jan 2016 05:37:57 +0000 (+0600)
Subject: libblkid: (zfs) add cast to fix UB [cppcheck]
X-Git-Tag: v2.28-rc1~190
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=18b76be61c11fd5f11fcb84aa6a946d3b03d7225;p=thirdparty%2Futil-linux.git

libblkid: (zfs) add cast to fix UB [cppcheck]

[libblkid/src/superblocks/zfs.c:173]: (error) Shifting 32-bit value by 56 bits is undefined behaviour
[libblkid/src/superblocks/zfs.c:173]: (error) Shifting 32-bit value by 40 bits is undefined behaviour
---

diff --git a/libblkid/src/superblocks/zfs.c b/libblkid/src/superblocks/zfs.c
index 371fd61da5..2804b151d9 100644
--- a/libblkid/src/superblocks/zfs.c
+++ b/libblkid/src/superblocks/zfs.c
@@ -170,7 +170,7 @@ static void zfs_extract_guid_name(blkid_probe pr, loff_t offset)
 
 static int find_uberblocks(const void *label, loff_t *ub_offset, int *swap_endian)
 {
-	uint64_t swab_magic = swab64(UBERBLOCK_MAGIC);
+	uint64_t swab_magic = swab64((uint64_t)UBERBLOCK_MAGIC);
 	struct zfs_uberblock *ub;
 	int i, found = 0;
 	loff_t offset = VDEV_LABEL_UBERBLOCK;