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:609)
   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.getTokenStreamOfIncludedFile(ClankTokenStreamProducer.java:156)
   at org.netbeans.modules.cnd.modelimpl.csm.core.FileImpl.getTokenStreamOfIncludedFile(FileImpl.java:1373)
   at org.netbeans.modules.cnd.modelimpl.csm.core.FileImpl.fixFakeIncludeRegistrations(FileImpl.java:2050)
   at org.netbeans.modules.cnd.modelimpl.csm.core.FileImpl.fixFakeRegistrations(FileImpl.java:1992)
   at org.netbeans.modules.cnd.modelimpl.csm.core.FileImpl.onProjectParseFinished(FileImpl.java:906)
   at org.netbeans.modules.cnd.modelimpl.csm.core.FakeRegistrationWorker$FixRegistrationRunnable.run(FakeRegistrationWorker.java:146)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.AssertionError: LHS: must not be called for emptyKey
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:420)
   at org.netbeans.modules.cnd.modelimpl.csm.core.FakeRegistrationWorker.fixFakeRegistration(FakeRegistrationWorker.java:99)
   at org.netbeans.modules.cnd.modelimpl.csm.core.ProjectBase.onParseFinishImpl(ProjectBase.java:3172)
   at org.netbeans.modules.cnd.modelimpl.csm.core.ProjectBase.onParseFinish(ProjectBase.java:3155)
   at org.netbeans.modules.cnd.modelimpl.csm.core.ParserQueue.handleLastProjectFile(ParserQueue.java:927)
   at org.netbeans.modules.cnd.modelimpl.csm.core.ParserQueue.onFileParsingFinished(ParserQueue.java:911)
   at org.netbeans.modules.cnd.modelimpl.csm.core.ParserThread._run(ParserThread.java:164)
   at org.netbeans.modules.cnd.modelimpl.csm.core.ParserThread.run(ParserThread.java:74)
   at org.netbeans.modules.cnd.modelimpl.csm.core.ParserThreadManager$Wrapper.run(ParserThreadManager.java:92)
   at org.openide.util.RequestProcessor$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)