Function rustc_ty_utils::representability::is_type_structurally_recursive

fn is_type_structurally_recursive<'tcx>(
    tcx: TyCtxt<'tcx>,
    seen: &mut Vec<Ty<'tcx>>,
    shadow_seen: &mut Vec<AdtDef<'tcx>>,
    representable_cache: &mut FxHashMap<Ty<'tcx>, Representability>,
    ty: Ty<'tcx>,
    sp: Span,
    field_id: Option<HirId>,
    force_result: &mut bool
) -> Representability