vm_eval.c: rb_check_funcall_default

* vm_eval.c (rb_check_funcall_default): split from
  rb_check_funcall to return the given fallback value.
* object.c (rb_obj_dig): use rb_check_funcall_default so that tail
  call optimization will be possible.  [Feature #11643]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52505 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 3 deletions

diff --git a/object.c b/object.c
index 50c2fe04f5..46e39eaec1 100644
--- a/object.c
+++ b/object.c
@@ -3183,9 +3183,7 @@ rb_obj_dig(int argc, VALUE *argv, VALUE obj, VALUE notfound)
 		}
 	    }
 	}
-	obj = rb_check_funcall(obj, id_dig, argc, argv);
-	if (obj == Qundef) return notfound;
-	break;
+	return rb_check_funcall_default(obj, id_dig, argc, argv, notfound);
     }
     return obj;
 }