Differentiate T_OBJECT shapes from other objects

We would like to differentiate types of objects via their shape.  This
commit adds a special T_OBJECT shape when we allocate an instance of
T_OBJECT.  This allows us to avoid testing whether an object is an
instance of a T_OBJECT or not, we can just check the shape.

1 files changed, 1 insertions, 0 deletions

diff --git a/variable.c b/variable.c
index daae90396e..15e18f21ae 100644
--- a/variable.c
+++ b/variable.c
@@ -1606,6 +1606,7 @@ iterate_over_shapes_with_callback(rb_shape_t *shape, rb_ivar_foreach_callback_fu
       case SHAPE_CAPACITY_CHANGE:
       case SHAPE_FROZEN:
       case SHAPE_IVAR_UNDEF:
+      case SHAPE_T_OBJECT:
         iterate_over_shapes_with_callback(rb_shape_get_parent(shape), callback, itr_data);
         return;
     }