Function rustc_middle::traits::specialization_graph::ancestors
source · pub fn ancestors<'tcx>(
tcx: TyCtxt<'tcx>,
trait_def_id: DefId,
start_from_impl: DefId
) -> Result<Ancestors<'tcx>, ErrorGuaranteed>
Expand description
Walk up the specialization ancestors of a given impl, starting with that impl itself.
Returns Err
if an error was reported while building the specialization
graph.