[PATCH v4 3/4] commit: allocate array using object_id size

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struct commit_graft aggregates an array of object_id's, which have
size >= GIT_MAX_RAWSZ bytes. This change prevents memory allocation
error when size of object_id is larger than GIT_SHA1_RAWSZ.

Signed-off-by: Patryk Obara <patryk.obara@xxxxxxxxx>
---
 commit.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/commit.c b/commit.c
index 1a0a9f2..436eb34 100644
--- a/commit.c
+++ b/commit.c
@@ -147,7 +147,8 @@ struct commit_graft *read_graft_line(struct strbuf *line)
 	if ((line->len + 1) % entry_size)
 		goto bad_graft_data;
 	i = (line->len + 1) / entry_size - 1;
-	graft = xmalloc(st_add(sizeof(*graft), st_mult(GIT_SHA1_RAWSZ, i)));
+	graft = xmalloc(st_add(sizeof(*graft),
+	                       st_mult(sizeof(struct object_id), i)));
 	graft->nr_parent = i;
 	if (get_oid_hex(line->buf, &graft->oid))
 		goto bad_graft_data;
-- 
2.9.5




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