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>
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@ -2881,8 +2881,9 @@ static int add_to_super_ddf(struct supertype *st,
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dd->disk.magic = DDF_PHYS_DATA_MAGIC;
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now = time(0);
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tm = localtime(&now);
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sprintf(dd->disk.guid, "%8s%04d%02d%02d",
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T10, tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday);
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sprintf(dd->disk.guid, "%8s%04d%02d%02d", T10,
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(__u16)tm->tm_year+1900,
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(__u8)tm->tm_mon+1, (__u8)tm->tm_mday);
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tptr = (__u32 *)(dd->disk.guid + 16);
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*tptr++ = random32();
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*tptr = random32();
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