object: clear grafts when clearing parsed object pool

We do not clear grafts part of the parsed object pool when clearing the
pool itself, which can lead to memory leaks when a repository is being
cleared.

Fix this by moving `reset_commit_grafts()` into "object.c" and making it
part of the `struct parsed_object_pool` interface such that we can call
it from `parsed_object_pool_clear()`. Adapt `parsed_object_pool_new()`
to take and store a reference to its owning repository, which is needed
by `unparse_commit()`.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 13 deletions

diff --git a/commit.c b/commit.c
index ec9efc189d..bbef0e81c6 100644
--- a/commit.c
+++ b/commit.c
@@ -177,7 +177,7 @@ int commit_graft_pos(struct repository *r, const struct object_id *oid)
 		       commit_graft_oid_access);
 }
 
-static void unparse_commit(struct repository *r, const struct object_id *oid)
+void unparse_commit(struct repository *r, const struct object_id *oid)
 {
 	struct commit *c = lookup_commit(r, oid);
 
@@ -318,18 +318,6 @@ int for_each_commit_graft(each_commit_graft_fn fn, void *cb_data)
 	return ret;
 }
 
-void reset_commit_grafts(struct repository *r)
-{
-	int i;
-
-	for (i = 0; i < r->parsed_objects->grafts_nr; i++) {
-		unparse_commit(r, &r->parsed_objects->grafts[i]->oid);
-		free(r->parsed_objects->grafts[i]);
-	}
-	r->parsed_objects->grafts_nr = 0;
-	r->parsed_objects->commit_graft_prepared = 0;
-}
-
 struct commit_buffer {
 	void *buffer;
 	unsigned long size;