зеркало из https://github.com/microsoft/git.git
9bb4542b8c
The block-sha1 implementation takes an "unsigned long" for the length of a buffer to hash, but our hash algorithm wrappers take a size_t, as do other implementations we support like openssl or sha1dc. On many systems, including Linux, these two are equivalent, but they are not on Windows (where only a "long long" is 64 bits). As a result, passing large chunks to a single the_hash_algo->update_fn() would produce wrong answers there. Note that we don't need to update any other sizes outside of the function interface. We store the cumulative size in a "long long" (which we must do since we hash things bigger than 4GB, like packfiles, even on 32-bit platforms). And internally, we break that size_t len down into 64-byte blocks to feed into the guts of the algorithm. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
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| sha1.c | ||
| sha1.h | ||