[PATCH v2 2/4] pack-objects: do not get distracted by broken symrefs

[Johannes Schindelin <johannes.schindelin@gmx.de>]

It is quite possible for, say, a remote HEAD to become broken, e.g.
when the default branch was renamed.

We should still be able to pack our objects when such a thing happens;
simply ignore broken symrefs (because they cannot matter for the packing
process anyway).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 reachable.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/reachable.c b/reachable.c
index 9cff25b..64289f3 100644
--- a/reachable.c
+++ b/reachable.c
@@ -25,9 +25,15 @@ static void update_progress(struct connectivity_progress *cp)
 static int add_one_ref(const char *path, const struct object_id *oid,
 		       int flag, void *cb_data)
 {
-	struct object *object = parse_object_or_die(oid->hash, path);
 	struct rev_info *revs = (struct rev_info *)cb_data;
+	struct object *object;
 
+	if ((flag & REF_ISSYMREF) && (flag & REF_ISBROKEN)) {
+		warning("ref is broken: %s", path);
+		return 0;
+	}
+
+	object = parse_object_or_die(oid->hash, path);
 	add_pending_object(revs, object, "");
 
 	return 0;
-- 
2.5.3.windows.1.3.gc322723