Shopify
diff --git a/‎shape.c‎
Lines changed: 2 additions & 0 deletions b/‎shape.c‎
Lines changed: 2 additions & 0 deletions
@@ -940,6 +940,8 @@ rb_shape_transition_add_ivar(VALUE obj, ID id)
 
     rb_shape_t *next_shape = shape_get_next(RSHAPE(original_shape_id), obj, id, true);
     if (next_shape) {
+        RUBY_ASSERT(next_shape->type == SHAPE_IVAR, "next_shape->type == %d", (int)next_shape->type);
+
         return shape_id(next_shape, original_shape_id);
     }
     else {
Original file line number	Diff line number	Diff line change
`@@ -940,6 +940,8 @@ rb_shape_transition_add_ivar(VALUE obj, ID id)`
`940`	`940`
`941`	`941`	`rb_shape_t *next_shape = shape_get_next(RSHAPE(original_shape_id), obj, id, true);`
`942`	`942`	`if (next_shape) {`
	`943`	`+ RUBY_ASSERT(next_shape->type == SHAPE_IVAR, "next_shape->type == %d", (int)next_shape->type);`
	`944`	`+`
`943`	`945`	`return shape_id(next_shape, original_shape_id);`
`944`	`946`	`}`
`945`	`947`	`else {`