--- old/src/hotspot/os/linux/os_linux.hpp	2019-03-05 18:14:46.029507612 +0800
+++ new/src/hotspot/os/linux/os_linux.hpp	2019-03-05 18:14:45.680972009 +0800
@@ -38,8 +38,6 @@
   static bool libjsig_is_loaded;        // libjsig that interposes sigaction(),
                                         // __sigaction(), signal() is loaded
   static struct sigaction *(*get_signal_action)(int);
-  static struct sigaction *get_preinstalled_handler(int);
-  static void save_preinstalled_handler(int, struct sigaction&);
 
   static void check_signal_handler(int sig);