"git pull --rebase" on a corrupt HEAD caused a segfault. In
general we substitute an empty tree object when running the in-core
equivalent of the diff-index command, and the codepath has been
corrected to do so as well to fix this issue.
* jk/has-uncommitted-changes-fix:
has_uncommitted_changes(): fall back to empty tree
int run_diff_index(struct rev_info *revs, int cached)
{
struct object_array_entry *ent;
+ uint64_t start = getnanotime();
+ if (revs->pending.nr != 1)
+ BUG("run_diff_index must be passed exactly one tree");
+
ent = revs->pending.objects;
if (diff_cache(revs, &ent->item->oid, ent->name, cached))
exit(128);