static int loop = 0;
static int restart = 0;
-static char *pidfile = NULL;
-static pid_t collectd_pid = 0;
+static const char *pidfile = NULL;
+static pid_t collectd_pid = 0;
-static void exit_usage (char *name)
+__attribute__((noreturn))
+static void exit_usage (const char *name)
{
printf ("Usage: %s <options> [-- <collectd options>]\n"