avoid possible overflow in delta size filtering computation

diff --git a/builtin-pack-objects.c b/builtin-pack-objects.c
index fb5e14d56e5b9fec0a054eb9708be41a59ac0f13..84a13c7ccd4c04df2d45b7130ef7005643e42cb6 100644 (file)
--- a/builtin-pack-objects.c
+++ b/builtin-pack-objects.c
@@ -1265,7 +1265,7 @@ static int try_delta(struct unpacked *trg, struct unpacked *src,
                max_size = trg_entry->delta_size;
                ref_depth = trg->depth;
        }
-       max_size = max_size * (max_depth - src->depth) /
+       max_size = (uint64_t)max_size * (max_depth - src->depth) /
                                                (max_depth - ref_depth + 1);
        if (max_size == 0)
                return 0;