{"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"assert_eq!(tag_layout.size,"}]}
        assert_eq!(tag_layout.size, tag_val.layout.size);
        let tag_val = self.read_immediate(&self.project_field(op, tag_field)?)?;
        assert_eq!(tag_layout.backend_repr.is_signed(), tag_val.layout.backend_repr.is_signed());