+--- old/main.c
++++ new/main.c
+@@ -110,7 +110,7 @@ pid_t wait_process(pid_t pid, int *statu
+ }
+
+ /* Wait for a process to exit, calling io_flush while waiting. */
+-static void wait_process_with_flush(pid_t pid, int *exit_code_ptr)
++void wait_process_with_flush(pid_t pid, int *exit_code_ptr)
+ {
+ pid_t waited_pid;
+ int status;