--- old/src/hotspot/os/windows/os_windows.cpp	2018-05-17 15:07:27.432485009 -0400
+++ new/src/hotspot/os/windows/os_windows.cpp	2018-05-17 15:07:27.057450204 -0400
@@ -4132,6 +4132,11 @@
 
   SymbolEngine::recalc_search_path();
 
+  // Initialize data for jdk.internal.misc.Signal
+  if (!ReduceSignalUsage) {
+    signal_init_pd();
+  }
+
   return JNI_OK;
 }