1 files changed, 7 insertions, 9 deletions
diff --git a/object.c b/object.c
index cee423cc19..3de93c4f0e 100644
--- a/object.c
+++ b/object.c
@@ -339,17 +339,15 @@ rb_obj_copy_ivar(VALUE dest, VALUE obj)
     shape_id_t dest_shape_id = src_shape_id;
     shape_id_t initial_shape_id = RBASIC_SHAPE_ID(dest);
 
-    if (RSHAPE(initial_shape_id)->heap_index != RSHAPE(src_shape_id)->heap_index || !rb_shape_canonical_p(src_shape_id)) {
-        RUBY_ASSERT(RSHAPE(initial_shape_id)->type == SHAPE_T_OBJECT);
+    RUBY_ASSERT(RSHAPE(initial_shape_id)->type == SHAPE_T_OBJECT);
 
-        dest_shape_id = rb_shape_rebuild(initial_shape_id, src_shape_id);
-        if (UNLIKELY(rb_shape_too_complex_p(dest_shape_id))) {
-            st_table *table = rb_st_init_numtable_with_size(src_num_ivs);
-            rb_obj_copy_ivs_to_hash_table(obj, table);
-            rb_obj_init_too_complex(dest, table);
+    dest_shape_id = rb_shape_rebuild(initial_shape_id, src_shape_id);
+    if (UNLIKELY(rb_shape_too_complex_p(dest_shape_id))) {
+        st_table *table = rb_st_init_numtable_with_size(src_num_ivs);
+        rb_obj_copy_ivs_to_hash_table(obj, table);
+        rb_obj_init_too_complex(dest, table);
 
-            return;
-        }
+        return;
     }
 
     VALUE *src_buf = ROBJECT_FIELDS(obj);