{"ast_node_type":"function","tokens":[{"end":96,"kind":"keyword","start":0,"text":"pub"}]}
    pub fn read_str(&self, mplace: &MPlaceTy<'tcx, M::Provenance>) -> InterpResult<'tcx, &str> {
    /// Turn the wide MPlace into a string (must already be dereferenced!)
        let len = mplace.len(self)?;