Function rustc_mir_build::thir::pattern::_match::constructor_covered_by_range

fn constructor_covered_by_range<'tcx>(
    tcx: TyCtxt<'tcx>, 
    param_env: ParamEnv<'tcx>, 
    ctor: &Constructor<'tcx>, 
    pat: &Pat<'tcx>
) -> Option<()>