XJC generates incorrectly annotation @XmlSchemaType for types like:
    <!-- Simple type list -->
    <xsd:simpleType name="LongList">
        <xsd:list>
            <xsd:simpleType>
                <xsd:restriction base="xsd:unsignedInt"/>
            </xsd:simpleType>
        </xsd:list>
    </xsd:simpleType>
    <!--- Complex test type -->
    <xsd:element name="typesLongList">
        <xsd:complexType>
            <xsd:sequence>
                <xsd:element name="in" type="tns:LongList"/>
            </xsd:sequence>
        </xsd:complexType>
    </xsd:element>

Follow-up marshalling of incorrectly generated classes triggers ClassCastException at runtime:
java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.String
        at com.sun.xml.internal.bind.v2.model.impl.RuntimeBuiltinLeafInfoImpl$StringImplImpl.print(RuntimeBuiltinLeafInfoImpl.java:1034)
        at com.sun.xml.internal.bind.v2.runtime.reflect.ListTransducedAccessorImpl.print(ListTransducedAccessorImpl.java:103)
        at com.sun.xml.internal.bind.v2.runtime.reflect.DefaultTransducedAccessor.writeLeafElement(DefaultTransducedAccessor.java:54)
        at com.sun.xml.internal.bind.v2.runtime.property.ListElementProperty.serializeBody(ListElementProperty.java:107)
        at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:345)
        at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsSoleContent(XMLSerializer.java:578)
        at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.serializeRoot(ClassBeanInfoImpl.java:326)
        at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsRoot(XMLSerializer.java:479)
        at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:313)
        at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:241)
        at javax.xml.bind.helpers.AbstractMarshallerImpl.marshal(AbstractMarshallerImpl.java:95)