--- old/src/hotspot/os_cpu/bsd_zero/thread_bsd_zero.cpp	2018-03-20 18:39:41.511568153 -0400
+++ new/src/hotspot/os_cpu/bsd_zero/thread_bsd_zero.cpp	2018-03-20 18:39:40.890510517 -0400
@@ -27,6 +27,11 @@
 #include "runtime/frame.inline.hpp"
 #include "runtime/thread.inline.hpp"
 
+frame JavaThread::pd_last_frame() {
+  assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
+  return frame(last_Java_fp(), last_Java_sp());
+}
+
 void JavaThread::cache_global_variables() {
   // nothing to do
 }