--- a/hotspot/src/share/vm/runtime/vm_version.cpp	Wed Jul 05 21:15:54 2017 +0200
+++ b/hotspot/src/share/vm/runtime/vm_version.cpp	Mon Jan 25 12:12:28 2016 -0800
@@ -238,9 +238,14 @@
     #define FLOAT_ARCH_STR XSTR(FLOAT_ARCH)
   #endif
 
-  return VMNAME " (" VM_RELEASE ") for " OS "-" CPU FLOAT_ARCH_STR
-         " JRE (" VERSION_STRING "), built on " __DATE__ " " __TIME__
-         " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER;
+  #define INTERNAL_VERSION_SUFFIX VM_RELEASE ")" \
+         " for " OS "-" CPU FLOAT_ARCH_STR \
+         " JRE (" VERSION_STRING "), built on " __DATE__ " " __TIME__ \
+         " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER
+
+  return strcmp(DEBUG_LEVEL, "release") == 0
+      ? VMNAME " (" INTERNAL_VERSION_SUFFIX
+      : VMNAME " (" DEBUG_LEVEL " " INTERNAL_VERSION_SUFFIX;
 }
 
 const char *Abstract_VM_Version::vm_build_user() {
@@ -251,6 +256,11 @@
   return DEBUG_LEVEL;
 }
 
+const char *Abstract_VM_Version::printable_jdk_debug_level() {
+  // Debug level is not printed for "release" builds
+  return strcmp(DEBUG_LEVEL, "release") == 0 ? "" : DEBUG_LEVEL " ";
+}
+
 unsigned int Abstract_VM_Version::jvm_version() {
   return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) |
          ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) |

--- a/hotspot/src/share/vm/runtime/vm_version.hpp	Wed Jul 05 21:15:54 2017 +0200
+++ b/hotspot/src/share/vm/runtime/vm_version.hpp	Mon Jan 25 12:12:28 2016 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2016, 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
@@ -106,6 +106,7 @@
   static const char* internal_vm_info_string();
   static const char* jre_release_version();
   static const char* jdk_debug_level();
+  static const char* printable_jdk_debug_level();
 
   static uint64_t features() {
     return _features;

--- a/hotspot/src/share/vm/utilities/vmError.cpp	Wed Jul 05 21:15:54 2017 +0200
+++ b/hotspot/src/share/vm/utilities/vmError.cpp	Mon Jan 25 12:12:28 2016 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2016, 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
@@ -232,11 +232,17 @@
    const char* runtime_name = JDK_Version::runtime_name() != NULL ?
                                 JDK_Version::runtime_name() : "";
    const char* runtime_version = JDK_Version::runtime_version() != NULL ?
-                                JDK_Version::runtime_version() : "";
-   st->print_cr("# JRE version: %s (%s) (build %s)", runtime_name, buf, runtime_version);
+                                   JDK_Version::runtime_version() : "";
+   const char* jdk_debug_level = Abstract_VM_Version::printable_jdk_debug_level() != NULL ?
+                                   Abstract_VM_Version::printable_jdk_debug_level() : "";
+
+   st->print_cr("# JRE version: %s (%s) (%sbuild %s)", runtime_name, buf,
+                 jdk_debug_level, runtime_version);
+
    // This is the long version with some default settings added
-   st->print_cr("# Java VM: %s (%s, %s%s%s%s%s, %s, %s)",
+   st->print_cr("# Java VM: %s (%s%s, %s%s%s%s%s, %s, %s)",
                  Abstract_VM_Version::vm_name(),
+                 jdk_debug_level,
                  Abstract_VM_Version::vm_release(),
                  Abstract_VM_Version::vm_info_string(),
                  TieredCompilation ? ", tiered" : "",