src/hotspot/share/runtime/safepoint.cpp

   }
 
   // Finish monitor deflation.
   ObjectSynchronizer::finish_deflate_idle_monitors(&deflate_counters);
 
+  assert(InlineCacheBuffer::is_empty(), "should have cleaned up ICBuffer");
 }
 
 
 bool SafepointSynchronize::safepoint_safe(JavaThread *thread, JavaThreadState state) {
   switch(state) {