+ function. */
+extern int coverage_begin_function (unsigned, unsigned);
+
+/* Complete the coverage information for the current function. */
+extern void coverage_end_function (unsigned, unsigned);
+
+/* Compute the control flow checksum for the current function. */
+extern unsigned coverage_compute_cfg_checksum (void);
+
+/* Compute the line number checksum for the current function. */
+extern unsigned coverage_compute_lineno_checksum (void);