ATTRIB(IntrusiveList, il_nextfld, .entity, nil);
ATTRIB(IntrusiveList, il_prevfld, .entity, nil);
INIT(IntrusiveList) { IL_INIT(this); }
ATTRIB(IntrusiveList, il_nextfld, .entity, nil);
ATTRIB(IntrusiveList, il_prevfld, .entity, nil);
INIT(IntrusiveList) { IL_INIT(this); }