Check for default package. (FELIX-1867)


git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@885949 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/framework/src/main/java/org/apache/felix/framework/ModuleImpl.java b/framework/src/main/java/org/apache/felix/framework/ModuleImpl.java
index bc2757a..e602603 100644
--- a/framework/src/main/java/org/apache/felix/framework/ModuleImpl.java
+++ b/framework/src/main/java/org/apache/felix/framework/ModuleImpl.java
@@ -1667,7 +1667,9 @@
                     if (m_logger.getLogLevel() >= Logger.LOG_DEBUG)
                     {
                         msg = diagnoseClassLoadError(m_resolver, ModuleImpl.this, name);
-                        ex = new ClassNotFoundException(msg, cnfe);
+                        ex = (msg != null)
+                            ? new ClassNotFoundException(msg, cnfe)
+                            : ex;
                     }
                     throw ex;
                 }
@@ -1996,6 +1998,10 @@
 
         // Get package name.
         String pkgName = Util.getClassPackage(name);
+        if (pkgName.length() == 0)
+        {
+            return null;
+        }
 
         // First, get the bundle ID of the module doing the class loader.
         long impId = module.getBundle().getBundleId();
diff --git a/framework/src/main/java/org/apache/felix/framework/searchpolicy/Resolver.java b/framework/src/main/java/org/apache/felix/framework/searchpolicy/Resolver.java
index 2a0b9e0..606c342 100644
--- a/framework/src/main/java/org/apache/felix/framework/searchpolicy/Resolver.java
+++ b/framework/src/main/java/org/apache/felix/framework/searchpolicy/Resolver.java
@@ -206,6 +206,12 @@
 
     public static IRequirement findAllowedDynamicImport(IModule importer, String pkgName)
     {
+        // We cannot import the default package, so return null in that case.
+        if (pkgName.length() == 0)
+        {
+            return null;
+        }
+
         // If any of the module exports this package, then we cannot
         // attempt to dynamically import it.
         ICapability[] caps = importer.getCapabilities();