--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Resolve.java	Thu Apr 12 10:19:31 2018 +0800
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Resolve.java	Thu Apr 12 09:23:34 2018 +0200
@@ -2120,6 +2120,7 @@
 
         Set<ModuleSymbol> recoverableModules = new HashSet<>(syms.getAllModules());
 
+        recoverableModules.add(syms.unnamedModule);
         recoverableModules.remove(env.toplevel.modle);
 
         for (ModuleSymbol ms : recoverableModules) {