--- a/src/hotspot/share/opto/bytecodeInfo.cpp	Fri Jul 13 11:21:55 2018 +0800
+++ b/src/hotspot/share/opto/bytecodeInfo.cpp	Thu Jul 12 16:31:28 2018 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -520,10 +520,10 @@
                                                caller_bci, inline_msg);
   if (C->print_inlining()) {
     C->print_inlining(callee_method, inline_level(), caller_bci, inline_msg);
-    if (callee_method == NULL) tty->print(" callee not monotonic or profiled");
-    if (Verbose && callee_method) {
+    guarantee(callee_method != NULL, "would crash in post_inlining_event");
+    if (Verbose) {
       const InlineTree *top = this;
-      while( top->caller_tree() != NULL ) { top = top->caller_tree(); }
+      while (top->caller_tree() != NULL) { top = top->caller_tree(); }
       //tty->print("  bcs: %d+%d  invoked: %d", top->count_inline_bcs(), callee_method->code_size(), callee_method->interpreter_invocation_count());
     }
   }