- let print_preflow_to =
- name_found(tcx.sess, attributes, "borrowck_graphviz_preflow");
- let print_postflow_to =
- name_found(tcx.sess, attributes, "borrowck_graphviz_postflow");
+ let print_preflow_to = name_found(tcx.sess, attributes, sym::borrowck_graphviz_preflow);
+ let print_postflow_to = name_found(tcx.sess, attributes, sym::borrowck_graphviz_postflow);