if(arch_os_thread_init(th)==0) return 1;
link_thread(th);
th->os_thread=thread_self();
+#ifndef LISP_FEATURE_WIN32
protect_control_stack_guard_page(1);
+#endif
#if defined(LISP_FEATURE_X86) || defined(LISP_FEATURE_X86_64)
return call_into_lisp_first_time(function,args,0);