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authorLibravatar brian m. carlson <sandals@crustytoothpaste.net>2021-04-26 01:02:56 +0000
committerLibravatar Junio C Hamano <gitster@pobox.com>2021-04-27 16:31:39 +0900
commit14228447c9ce664a4e9c31ba10344ec5e4ea4ba5 (patch)
tree75e66ea8ad821e4684497a995d9648658c37fcbf /t/t0007-git-var.sh
parenthash: set, copy, and use algo field in struct object_id (diff)
downloadtgif-14228447c9ce664a4e9c31ba10344ec5e4ea4ba5.tar.xz
hash: provide per-algorithm null OIDs
Up until recently, object IDs did not have an algorithm member, only a hash. Consequently, it was possible to share one null (all-zeros) object ID among all hash algorithms. Now that we're going to be handling objects from multiple hash algorithms, it's important to make sure that all object IDs have a correct algorithm field. Introduce a per-algorithm null OID, and add it to struct hash_algo. Introduce a wrapper function as well, and use it everywhere we used to use the null_oid constant. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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