--- a/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/debugger/linux/LinuxDebuggerLocal.java	Mon Nov 04 13:58:33 2019 +0100
+++ b/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/debugger/linux/LinuxDebuggerLocal.java	Mon Nov 04 22:31:59 2019 +0900
@@ -118,6 +118,9 @@
                                 throws DebuggerException;
     public native static int  getAddressSize() ;
 
+    @Override
+    public native String demangle(String sym);
+
     // Note on Linux threads are really processes. When target process is
     // attached by a serviceability agent thread, only that thread can do
     // ptrace operations on the target. This is because from kernel's point