Function rustc_passes::dead::check_item

fn check_item<'tcx>(
    tcx: TyCtxt<'tcx>,
    worklist: &mut Vec<(LocalDefId, ComesFromAllowExpect)>,
    struct_constructors: &mut LocalDefIdMap<LocalDefId>,
    unsolved_impl_items: &mut Vec<(ItemId, LocalDefId)>,
    id: ItemId
)