[PATCH v3 2/6] ref-filter: add check for negative file size

From: Olga Telezhnaya <olyatelezhnaya@gmail.com>
Date: Jan 10, 2019, 06:32 UTC
Message-ID: <0102016836761be3-b35028e3-800e-4f54-b608-55cebf6feaa9-000000@eu-west-1.amazonses.com>
In-Reply-To: <0102016836761b8b-8616fc01-3489-4e53-a5b7-cd4b52e20e01-000000@eu-west-1.amazonses.com>

If we have negative file size, we are doing something wrong.

Signed-off-by: Olga Telezhnaia <olyatelezhnaya@gmail.com>
---
 ref-filter.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ref-filter.c b/ref-filter.c
index ecef4b47c751c..57f3789d1040d 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -1491,6 +1491,8 @@ static int get_object(struct ref_array_item *ref, int deref, struct object **obj
 				     OBJECT_INFO_LOOKUP_REPLACE))
 		return strbuf_addf_ret(err, -1, _("missing object %s for %s"),
 				       oid_to_hex(&oi->oid), ref->refname);
+	if (oi->info.disk_sizep && oi->disk_size < 0)
+		BUG("Object size is less than zero.");
 
 	if (oi->info.contentp) {
 		*obj = parse_object_buffer(the_repository, &oi->oid, oi->type, oi->size, oi->content, &eaten);

--
https://github.com/git/git/pull/552