diff -r 71fef5fae9cc -r 562bf1878089 src/hotspot/os/posix/os_posix.cpp
--- a/src/hotspot/os/posix/os_posix.cpp	Wed Oct 16 14:32:17 2019 -0700
+++ b/src/hotspot/os/posix/os_posix.cpp	Thu Oct 17 00:00:13 2019 +0200
@@ -167,11 +167,6 @@
   return n;
 }
 
-bool os::is_debugger_attached() {
-  // not implemented
-  return false;
-}
-
 void os::wait_for_keypress_at_exit(void) {
   // don't do anything on posix platforms
   return;