{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"//"}]}
    // is the smallest of those, and so has the most room to grow.
    // then at least one of the biggest N will have to grow. codegen_units[N-1]
    let max_codegen_units = cx.tcx.sess.codegen_units().as_usize();