In cases where there is an intact family, with parents married and residing together, the statute has no application. In such cases, the parents have no legal obligation to provide support for adult children and adult children have no remedy for compelling such support. In essence, ORS 107.108 permits a burden to be imposed upon one class of citizens---divorced or separated parents---that cannot in like circumstances be imposed upon married parents residing together. Parents in this latter class are thus immune from such legal liability. Likewise, ORS 107.108 creates a privilege for one class of citizens---adult children of divorced or separated parents---that is not granted to children whose parents are married and residing together. In consequence, by establishing distinctions based upon the marital status of the parent, ORS 107.108 violates the equal protection clauses of both Oregon and United States constitutions.