Function rustc_infer::traits::specialization_graph::ancestors
source · pub fn ancestors(
tcx: TyCtxt<'_>,
trait_def_id: DefId,
start_from_impl: DefId
) -> Result<Ancestors<'_>, 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.