//ww:error "not a variant"
// 944_variant_chain_b95 isas_chain_reject: `is base` on (void | ali) where
// ali=base — is/as ACCEPTANCE stays nominal-exact (#107). BOTH stages reject
// (cstage "base is not a variant of (...)", wwstage "is/as: not a variant of...").
package main;
type base = struct { a: int, b: int };
type ali = base;
fn f(v: (void | ali)) i32 = {
	if (v is base) { return 1; };
	return 0;
};
export fn main() i32 = { return 0; };