{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"assert!(bx.cx().is_backend_scalar_pair(cast));"}]}
                        assert!(bx.cx().is_backend_scalar_pair(cast));
                    mir::CastKind::PointerCoercion(PointerCoercion::Unsize, _) => {
                        let (lldata, llextra) = operand.val.pointer_parts();