Function rustc_ty_utils::representability::is_type_structurally_recursive

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