rustc_hir_analysis::check::check

Function best_definition_site_of_opaque

Source 
fn best_definition_site_of_opaque<'tcx>(
    tcx: TyCtxt<'tcx>,
    opaque_def_id: LocalDefId,
    origin: OpaqueTyOrigin<LocalDefId>,
) -> Option<(Span, LocalDefId)>