java.lang.AssertionError: LHS: must not be called for emptyKey
   at org.llvm.adt.DenseMapInfoObject.isEqual(DenseMapInfoObject.java:69)
   at org.llvm.adt.SmallPtrSetImplBase.insert_imp(SmallPtrSetImplBase.java:283)
   at org.llvm.adt.SmallPtrSetImpl.insert(SmallPtrSetImpl.java:121)
   at org.clang.frontend.impl.InitHeaderSearchStatics.RemoveDuplicates(InitHeaderSearchStatics.java:83)
   at org.clang.frontend.impl.InitHeaderSearch.Realize(InitHeaderSearch.java:634)
   at org.clang.frontend.FrontendClangGlobals.ApplyHeaderSearchOptions(FrontendClangGlobals.java:157)
   at org.clang.tools.services.impl.PreprocessorInitializer.createPreprocessor(PreprocessorInitializer.java:263)
   at org.clang.tools.services.impl.PreprocessorSupport.dumpPreprocessedEntry(PreprocessorSupport.java:296)
   at org.clang.tools.services.impl.PreprocessorSupport.preprocessEntries(PreprocessorSupport.java:241)
   at org.clang.tools.services.impl.PreprocessorSupport.preprocess(PreprocessorSupport.java:184)
   at org.clang.tools.services.ClankPreprocessorServices.preprocess(ClankPreprocessorServices.java:67)
   at org.netbeans.modules.cnd.apt.impl.support.clank.ClankDriverImpl.preprocessImpl(ClankDriverImpl.java:152)
   at org.netbeans.modules.cnd.apt.support.ClankDriver.preprocess(ClankDriver.java:120)
   at org.netbeans.modules.cnd.modelimpl.parser.clank.ClankTokenStreamProducer.preprocessWithHandler(ClankTokenStreamProducer.java:297)
   at org.netbeans.modules.cnd.modelimpl.parser.clank.ClankTokenStreamProducer.getPreprocessorOutputForInterestedFile(ClankTokenStreamProducer.java:273)
   at org.netbeans.modules.cnd.modelimpl.parser.clank.ClankTokenStreamProducer.getMacroUsages(ClankTokenStreamProducer.java:225)
   at org.netbeans.modules.cnd.modelimpl.parser.clank.ClankTokenStreamProducer.getMacroUsages(ClankTokenStreamProducer.java:109)
   at org.netbeans.modules.cnd.modelimpl.parser.clank.ClankFileInfoQuerySupport.getMacroUsages(ClankFileInfoQuerySupport.java:82)
   at org.netbeans.modules.cnd.modelimpl.impl.services.FileInfoQueryImpl.getMacroUsages(FileInfoQueryImpl.java:344)
   at org.netbeans.modules.cnd.highlight.semantic.ModelUtils.getMacroBlocks(ModelUtils.java:120)
   at org.netbeans.modules.cnd.highlight.semantic.SemanticEntitiesProvider$MacrosCodeProvider.getBlocks(SemanticEntitiesProvider.java:356)
   at org.netbeans.modules.cnd.highlight.semantic.SemanticHighlighter.updateImpl(SemanticHighlighter.java:207)
   at org.netbeans.modules.cnd.highlight.semantic.SemanticHighlighter.access$500(SemanticHighlighter.java:93)
   at org.netbeans.modules.cnd.highlight.semantic.SemanticHighlighter$TaskContext.run(SemanticHighlighter.java:443)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.AssertionError: LHS: must not be called for emptyKey
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1484)
   at org.netbeans.modules.cnd.highlight.semantic.SemanticHighlighter.run(SemanticHighlighter.java:355)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:584)
   at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:809)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304)
   at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.execute(TaskProcessor.java:725)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:686)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   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)