--- a/corba/src/share/classes/com/sun/tools/corba/se/idl/toJavaPortable/UnionGen.java	Thu May 02 13:34:46 2013 -0700
+++ b/corba/src/share/classes/com/sun/tools/corba/se/idl/toJavaPortable/UnionGen.java	Mon May 06 11:41:36 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2004, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2013, 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
@@ -258,6 +258,19 @@
   {
     Vector labels = vectorizeLabels (u.branches (), true);
 
+    if (Util.javaName(utype).equals ("boolean")) {
+        stream.println( "" ) ;
+        stream.println( "  private void verifyDefault (boolean discriminator)" ) ;
+        stream.println( "  {" ) ;
+        if (labels.contains ("true"))
+            stream.println ("    if ( discriminator )");
+        else
+            stream.println ("    if ( !discriminator )");
+        stream.println( "        throw new org.omg.CORBA.BAD_OPERATION();" ) ;
+        stream.println( "  }" ) ;
+        return;
+    }
+
     stream.println( "" ) ;
     stream.println( "  private void verifyDefault( " + Util.javaName(utype) +
         " value )" ) ;
@@ -763,7 +776,7 @@
             stream.println (indent + "if (" + disName + ')');
 
             if (firstBranch == null)
-                stream.println (indent + "  throw new org.omg.CORBA.BAD_OPERATION ();");
+                stream.println (indent + "  value._default(" + disName + ");");
             else {
                 stream.println (indent + '{');
                 index = readBranch (index, indent + "  ", firstBranch.typedef.name (),
@@ -774,7 +787,7 @@
             stream.println (indent + "else");
 
             if (secondBranch == null)
-                stream.println (indent + "  throw new org.omg.CORBA.BAD_OPERATION ();");
+                stream.println (indent + "  value._default(" + disName + ");");
             else {
                 stream.println (indent + '{');
                 index = readBranch (index, indent + "  ", secondBranch.typedef.name (),
@@ -924,23 +937,25 @@
         firstBranch = secondBranch;
         secondBranch = tmp;
       }
-      stream.println (indent + "if (" + disName + ')');
-      if (firstBranch == null)
-        stream.println (indent + "  throw new org.omg.CORBA.BAD_OPERATION ();");
-      else
-      {
-        stream.println (indent + '{');
-        index = writeBranch (index, indent + "  ", name, firstBranch.typedef, stream);
-        stream.println (indent + '}');
-      }
-      stream.println (indent + "else");
-      if (secondBranch == null)
-        stream.println (indent + "  throw new org.omg.CORBA.BAD_OPERATION ();");
-      else
-      {
-        stream.println (indent + '{');
-        index = writeBranch (index, indent + "  ", name, secondBranch.typedef, stream);
-        stream.println (indent + '}');
+      if (firstBranch != null && secondBranch != null) {
+          stream.println (indent + "if (" + disName + ')');
+          stream.println (indent + '{');
+          index = writeBranch (index, indent + "  ", name, firstBranch.typedef, stream);
+          stream.println (indent + '}');
+          stream.println (indent + "else");
+          stream.println (indent + '{');
+          index = writeBranch (index, indent + "  ", name, secondBranch.typedef, stream);
+          stream.println (indent + '}');
+      } else if (firstBranch != null) {
+          stream.println (indent + "if (" + disName + ')');
+          stream.println (indent + '{');
+          index = writeBranch (index, indent + "  ", name, firstBranch.typedef, stream);
+          stream.println (indent + '}');
+      } else {
+          stream.println (indent + "if (!" + disName + ')');
+          stream.println (indent + '{');
+          index = writeBranch (index, indent + "  ", name, secondBranch.typedef, stream);
+          stream.println (indent + '}');
       }
     }
     return index;