static const struct objfile_key<debug_sym_fns_data>
symfile_debug_objfile_data_key;
-/* If non-zero all calls to the symfile functions are logged. */
-static int debug_symfile = 0;
+/* If true all calls to the symfile functions are logged. */
+static bool debug_symfile = false;
/* Return non-zero if symfile debug logging is installed. */