Constant rustc_passes::errors::_DERIVE_rustc_session_SessionDiagnostic_session_diagnostic_sess_rustc_errors_ErrorGuaranteed_FOR_RustcAllowConstFnUnstable

const _DERIVE_rustc_session_SessionDiagnostic_session_diagnostic_sess_rustc_errors_ErrorGuaranteed_FOR_RustcAllowConstFnUnstable: ();