--- old/src/java.base/share/classes/jdk/internal/module/ModuleBootstrap.java	2018-07-20 13:34:21.025698232 -0400
+++ new/src/java.base/share/classes/jdk/internal/module/ModuleBootstrap.java	2018-07-20 13:34:19.665619154 -0400
@@ -172,6 +172,7 @@
 
         boolean haveModulePath = (appModulePath != null || upgradeModulePath != null);
         boolean needResolution = true;
+        boolean canArchive = false;
 
         // If the java heap was archived at CDS dump time and the environment
         // at dump time matches the current environment then use the archived
@@ -186,12 +187,11 @@
             systemModuleFinder = archivedModuleGraph.finder();
             needResolution = (traceOutput != null);
         } else {
-            boolean canArchive = false;
             if (!haveModulePath && addModules.isEmpty() && limitModules.isEmpty()) {
                 systemModules = SystemModuleFinders.systemModules(mainModule);
                 if (systemModules != null && !isPatched) {
                     needResolution = (traceOutput != null);
-                    canArchive = true;
+                    canArchive = true; 
                 }
             }
             if (systemModules == null) {
@@ -206,12 +206,6 @@
                 systemModules = new ExplodedSystemModules();
                 systemModuleFinder = SystemModuleFinders.ofSystem();
             }
-
-            // Module graph can be archived at CDS dump time. Only allow the
-            // unnamed module case for now.
-            if (canArchive && (mainModule == null)) {
-                ArchivedModuleGraph.archive(mainModule, systemModules, systemModuleFinder);
-            }
         }
 
         Counters.add("jdk.module.boot.1.systemModulesTime", t1);
@@ -353,8 +347,12 @@
         if (needResolution) {
             cf = JLMA.resolveAndBind(finder, roots, traceOutput);
         } else {
-            Map<String, Set<String>> map = systemModules.moduleReads();
-            cf = JLMA.newConfiguration(systemModuleFinder, map);
+            if (archivedModuleGraph != null) {
+                cf = archivedModuleGraph.configuration();
+            } else {
+                Map<String, Set<String>> map = systemModules.moduleReads();
+                cf = JLMA.newConfiguration(systemModuleFinder, map);
+            }
         }
 
         // check that modules specified to --patch-module are resolved
@@ -436,6 +434,13 @@
                 limitedFinder = new SafeModuleFinder(finder);
         }
 
+        // Module graph can be archived at CDS dump time. Only allow the
+        // unnamed module case for now.
+        if (canArchive && (mainModule == null)) {
+            ArchivedModuleGraph.archive(mainModule, systemModules,
+                                        systemModuleFinder, cf);
+        }
+
         // total time to initialize
         Counters.add("jdk.module.boot.totalTime", t0);
         Counters.publish();