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| author | Jes Sorensen <jsorensen@fb.com> | 2018-05-31 22:07:33 +0200 |
|---|---|---|
| committer | Jes Sorensen <jsorensen@fb.com> | 2018-05-31 22:07:33 +0200 |
| commit | 002a5978f015a77ecc48487006b1030f9dbe1394 (patch) | |
| tree | d7b471a9fc509fea6a6051968fc55b6c69e147eb /super-ddf.c | |
| parent | super1: Fix cases triggering gcc-8.1 strncpy truncate warning (diff) | |
| download | mdadm-002a5978f015a77ecc48487006b1030f9dbe1394.tar.xz mdadm-002a5978f015a77ecc48487006b1030f9dbe1394.zip | |
super-ddf: Fix gcc-8.1 overflow warnings
Cast to types that are big enough to hold the values, but also guarantee
no overflow of the buffer keepts gcc happy.
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Diffstat (limited to 'super-ddf.c')
| -rw-r--r-- | super-ddf.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/super-ddf.c b/super-ddf.c index d02a19a2..618542c4 100644 --- a/super-ddf.c +++ b/super-ddf.c @@ -2881,8 +2881,9 @@ static int add_to_super_ddf(struct supertype *st, dd->disk.magic = DDF_PHYS_DATA_MAGIC; now = time(0); tm = localtime(&now); - sprintf(dd->disk.guid, "%8s%04d%02d%02d", - T10, tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday); + sprintf(dd->disk.guid, "%8s%04d%02d%02d", T10, + (__u16)tm->tm_year+1900, + (__u8)tm->tm_mon+1, (__u8)tm->tm_mday); tptr = (__u32 *)(dd->disk.guid + 16); *tptr++ = random32(); *tptr = random32(); |