Function rustc_typeck::check::compare_method::extract_spans_for_error_reporting

pub(in check::compare_method) fn extract_spans_for_error_reporting<'a, 'tcx>(
    infcx: &InferCtxt<'a, 'tcx>, 
    param_env: ParamEnv<'tcx>, 
    terr: &TypeError<'_>, 
    cause: &ObligationCause<'tcx>, 
    impl_m: &AssocItem, 
    impl_sig: FnSig<'tcx>, 
    trait_m: &AssocItem, 
    trait_sig: FnSig<'tcx>
) -> (Span, Option<Span>)