In Puritan Leasing Co. v. August (1976) 16 Cal.3d 451, a lessor sued a lessee of certain equipment and the guarantors of the lease for damages for breach of the lease. It obtained judgment against both the lessee and the guarantors, but in an amount less than desired. The lessor appealed, seeking a larger judgment. On appeal, the guarantors asserted that the guarantee was unenforceable. The court held the directed verdict against all defendants had necessarily resolved the issue of the guarantors' liability and the guarantors, not having filed a cross-appeal, were precluded from raising the issue of the enforceability of the guarantee on appeal.