java.lang.NullPointerException
   at com.sun.tools.javac.code.Scope.leave(Scope.java:152)
   at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1132)
   at org.netbeans.lib.nbjavac.services.NBAttr.visitBlock(NBAttr.java:82)
   at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:915)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:572)
   at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:641)
   at com.sun.tools.javac.api.JavacTaskImpl.attributeTree(JavacTaskImpl.java:762)
   at org.netbeans.api.java.source.TreeUtilities.attributeTree(TreeUtilities.java:697)
   at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser$ParseExpressionTask.run(PreferredCCParser.java:524)
   at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser.parseExpression(PreferredCCParser.java:446)
   at org.netbeans.modules.debugger.jpda.projects.EditorContextSupport.parseExpression(EditorContextSupport.java:1453)
   at org.netbeans.modules.debugger.jpda.projectsui.EditorContextImpl.parseExpression(EditorContextImpl.java:831)
   at sun.reflect.GeneratedMethodAccessor410.invoke(GeneratedMethodAccessor410.java:0)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:497)
   at org.netbeans.modules.debugger.jpda.EditorContextBridge.parseExpression(EditorContextBridge.java:130)
   at org.netbeans.modules.debugger.jpda.expr.TreeEvaluator.evaluate(TreeEvaluator.java:187)
   at org.netbeans.modules.debugger.jpda.JavaEvaluator.evaluateIn(JavaEvaluator.java:147)
   at org.netbeans.modules.debugger.jpda.JavaEvaluator.evaluate(JavaEvaluator.java:92)
   at org.netbeans.modules.debugger.jpda.expr.EvaluatorExpression$AssociatedExpression.evaluate(EvaluatorExpression.java:90)
   at org.netbeans.modules.debugger.jpda.expr.EvaluatorExpression.evaluate(EvaluatorExpression.java:73)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluateGeneric(JPDADebuggerImpl.java:961)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluateIn(JPDADebuggerImpl.java:824)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluateIn(JPDADebuggerImpl.java:847)
   at org.netbeans.modules.debugger.jpda.ui.models.WatchesModel$JPDAWatchEvaluating.getValue(WatchesModel.java:430)
   at org.netbeans.modules.debugger.jpda.ui.models.WatchesModel$JPDAWatchEvaluating.getType(WatchesModel.java:388)
   at org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilter.getFilter(VariablesTreeModelFilter.java:657)
   at org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilter.access$300(VariablesTreeModelFilter.java:126)
   at org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilter$3.run(VariablesTreeModelFilter.java:366)
   at org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilter.run(VariablesTreeModelFilter.java:264)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)