{"ast_node_type":"other","tokens":[{"end":102,"kind":"keyword","start":0,"text":"//"}]}
        // If this was an in-place pass, protect the place it comes from for the duration of the call.
        self.copy_op_allow_transmute(&caller_arg_copy, &callee_arg)?;
        if let FnArg::InPlace(mplace) = caller_arg {