ERROR: reference to uninstantiated pint ass::d at index: [3]
ERROR: in unroll_resolve-ing simple_meta_value_reference: ass::d[0..ass::N]
ERROR in expression 3 of param expr list: pint-val-ref ass::d[0..ass::N]
ERROR in dynamic_param_expr_list::unroll_resolve_rvalues()
ERROR in resolving strict template actuals.
	pint-val-ref ass::N, 3, pint-val-ref ass::d[0..ass::N]
ERROR resolving template arguments.
ERROR: unable to resolve process-type-reference during unroll.
Instantiated from: ass<3, p>
Error encountered during module::unroll.
ERROR in creating.  Aborting.
