Index: utils/TableGen/ClangDiagnosticsEmitter.cpp
===================================================================
--- utils/TableGen/ClangDiagnosticsEmitter.cpp
+++ utils/TableGen/ClangDiagnosticsEmitter.cpp
@@ -1045,6 +1045,7 @@
     switch (ModType) {
     case MT_Unknown:
       Builder.PrintFatalError("Unknown modifier type: " + Modifier);
+      break;
     case MT_Select: {
       SelectPiece *Select = New<SelectPiece>(MT_Select);
       do {