java.lang.AssertionError
   at com.sun.tools.javac.util.Assert.error(Assert.java:155)
   at com.sun.tools.javac.util.Assert.checkNonNull(Assert.java:62)
   at com.sun.tools.javac.comp.Annotate.queueScanTreeAndTypeAnnotate(Annotate.java:994)
   at com.sun.tools.javac.comp.Attr.visitVarDef(Attr.java:1119)
   at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:926)
   at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635)
   at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:704)
   at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:723)
   at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1205)
   at org.netbeans.lib.nbjavac.services.NBAttr.visitBlock(NBAttr.java:82)
   at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:990)
   at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494)
   at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635)
   at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:704)
   at com.sun.tools.javac.api.JavacTaskImpl.attributeTree(JavacTaskImpl.java:752)
   at org.netbeans.api.java.source.TreeUtilities.attributeTree(TreeUtilities.java:698)
   at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser$ParseExpressionTask.run(PreferredCCParser.java:550)
   at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser$11.call(PreferredCCParser.java:470)
   at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser$11.call(PreferredCCParser.java:467)
   at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser.runGuarded(PreferredCCParser.java:678)
   at org.netbeans.modules.debugger.jpda.projects.PreferredCCParser.parseExpression(PreferredCCParser.java:467)
   at org.netbeans.modules.debugger.jpda.projects.EditorContextSupport.parseExpression(EditorContextSupport.java:1441)
   at org.netbeans.modules.debugger.jpda.projectsui.EditorContextImpl.parseExpression(EditorContextImpl.java:836)
   at sun.reflect.GeneratedMethodAccessor343.invoke(GeneratedMethodAccessor343.java:0)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:498)
   at org.netbeans.modules.debugger.jpda.EditorContextBridge.parseExpression(EditorContextBridge.java:133)
   at org.netbeans.modules.debugger.jpda.expr.TreeEvaluator.evaluate(TreeEvaluator.java:187)
   at org.netbeans.modules.debugger.jpda.JavaEvaluator.evaluateIn(JavaEvaluator.java:162)
   at org.netbeans.modules.debugger.jpda.JavaEvaluator.evaluate(JavaEvaluator.java:107)
   at org.netbeans.modules.debugger.jpda.expr.EvaluatorExpression$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:979)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluate(JPDADebuggerImpl.java:373)
   at org.netbeans.modules.debugger.jpda.JPDADebuggerImpl.evaluate(JPDADebuggerImpl.java:337)
   at org.netbeans.modules.debugger.jpda.projectsui.ToolTipAnnotation.run(ToolTipAnnotation.java:277)
   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)