{"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"debug_assert!(self.ctfe_mode.is_some());"}]}
        debug_assert!(self.ctfe_mode.is_some());
    fn in_mutable_memory(&self, val: &PlaceTy<'tcx, M::Provenance>) -> bool {
        if let Some(mplace) = val.as_mplace_or_local().left() {