--- old/src/hotspot/os/solaris/os_solaris.hpp	2019-02-28 17:46:08.638983943 +0800
+++ new/src/hotspot/os/solaris/os_solaris.hpp	2019-02-28 17:46:08.247384100 +0800
@@ -105,9 +105,7 @@
   static void try_enable_extended_io();
 
   static struct sigaction *(*get_signal_action)(int);
-  static struct sigaction *get_preinstalled_handler(int);
   static int (*get_libjsig_version)();
-  static void save_preinstalled_handler(int, struct sigaction&);
   static void check_signal_handler(int sig);
 
   typedef int (*pthread_setname_np_func_t)(pthread_t, const char*);