diff -r 3549c2f110d2 -r 8a0aca5caca0 src/share/vm/prims/whitebox.hpp
--- a/src/share/vm/prims/whitebox.hpp	Thu Feb 14 15:17:03 2019 -0800
+++ b/src/share/vm/prims/whitebox.hpp	Wed Sep 11 12:06:33 2019 +0200
@@ -70,6 +70,7 @@
   static void register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread,
     JNINativeMethod* method_array, int method_count);
   static void register_extended(JNIEnv* env, jclass wbclass, JavaThread* thread);
+  static bool compile_method(Method* method, int comp_level, int bci, Thread* THREAD);
 };