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bloom: parse commit before computing filters

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When computing changed-path Bloom filters for a commit, we need to
know if the commit has a parent or not. If the commit is not parsed,
then its parent pointer will be NULL.

As far as I can tell, the only opportunity to reach this code
without parsing the commit is inside "test-tool bloom
get_filter_for_commit" but it is best to be safe.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee 2020-05-11 11:56:10 +00:00 committed by Junio C Hamano
parent 54c337be9c
commit 891c17c954
1 changed files with 3 additions and 0 deletions
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3
bloom.c
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@ -193,6 +193,9 @@ struct bloom_filter *get_bloom_filter(struct repository *r,
diffopt.max_changes = max_changes;
diff_setup_done(&diffopt);
/* ensure commit is parsed so we have parent information */
repo_parse_commit(r, c);
if (c->parents)
diff_tree_oid(&c->parents->item->object.oid, &c->object.oid, "", &diffopt);
else