Function body_span

pub fn body_span<'tcx>(tcx: TyCtxt<'tcx>, body: &Body<'tcx>) -> Span

This function exists to deal with #[tracing::instrument]. In that case, sadly, the Span value attached to a body directly refers only to the #[tracing::instrument] macro call. This function instead reconstitutes the span from the collection of spans on each statement.