extern void reset_thread_control_stack_guard_page(struct thread *th);
#if defined(LISP_FEATURE_SB_SAFEPOINT) && !defined(LISP_FEATURE_WIN32)
+# ifdef LISP_FEATURE_SB_THRUPTION
+void thruption_handler(int signal, siginfo_t *info, os_context_t *context);
+# endif
void rtmin0_handler(int signal, siginfo_t *info, os_context_t *context);
void rtmin1_handler(int signal, siginfo_t *info, os_context_t *context);
#endif