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commit: push commit_index update into alloc_commit_node

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Whenever we create a commit object via lookup_commit, we
give it a unique index to be used with the commit-slab API.
The theory is that any "struct commit" we create would
follow this code path, so any such struct would get an
index. However, callers could use alloc_commit_node()
directly (and get multiple commits with index 0).

Let's push the indexing into alloc_commit_node so that it's
hard for callers to get it wrong.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2014-06-10 17:39:04 -04:00
committed by Junio C Hamano
parent c335d74d34
commit 969eba6341
2 changed files with 10 additions and 4 deletions
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2
commit.c
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@ -17,7 +17,6 @@ static struct commit_extra_header *read_commit_extra_header_lines(const char *bu
int save_commit_buffer = 1;
const char *commit_type = "commit";
static int commit_count;
static struct commit *check_commit(struct object *obj,
const unsigned char *sha1,
@ -64,7 +63,6 @@ struct commit *lookup_commit(const unsigned char *sha1)
struct object *obj = lookup_object(sha1);
if (!obj) {
struct commit *c = alloc_commit_node();
c->index = commit_count++;
return create_object(sha1, OBJ_COMMIT, c);
}
if (!obj->type)