The donator should compensate the loss of reliance interest arising from the execution of the right of revocation for his breach of contract.

• 任意撤回权的行使虽为法定，但赠与人亦应赔偿受赠人因此所遭受的信赖利益损失，且其责任基础不是一般所认为的缔约过失责任而应是违约责任。