rustfmt nightly panics when trying to format a macro #6632
Description
Hi,
This macro makes rustfmt nightly crash:
macro_rules! impl_routes_and_health { ($($feature:literal, $variant:ident),* $(,)?) => { impl EitherState { pub(crate) fn service_name(&self) -> &'static str { match self { $( #[cfg(feature = $feature)] Self::$variant(s) => s.service_name(),// BuildService::service_name(s.clone()), )* } } } }; }If i remove the trailing comment // BuildService::service_name(s.clone()),, it works as expected.