dedup

deduplicating backup program
git clone git://git.2f30.org/dedup
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commit 499f62b1b9e3e6db6f9f77defdb0c2bb15c25778
parent 0ede11b6f9cd13ee8e1c01db78762705512e5316
Author: z3bra <contactatz3bradotorg>
Date:   Thu, 21 Feb 2019 14:08:20 +0100

Prevent underflow in buzh_init()

Diffstat:

Mhash.c | 3+++


1 file changed, 3 insertions(+), 0 deletions(-)

diff --git a/hash.c b/hash.c
@@ -54,6 +54,9 @@ buzh_init(uint8_t *buf, size_t size)
 	size_t i;
 	uint32_t fp;
 
+	if (!size)
+		return 0;
+
 	for (i = size - 1, fp = 0; i > 0; i--, buf++)
 		fp ^= ROTL(buz[*buf], i % 32);