1 files changed, 2 insertions, 0 deletions
diff --git a/include/llvm/Support/TarWriter.h b/include/llvm/Support/TarWriter.h
index 44bdcaf2c465..639f61b53892 100644
--- a/include/llvm/Support/TarWriter.h
+++ b/include/llvm/Support/TarWriter.h
@@ -11,6 +11,7 @@
 #define LLVM_SUPPORT_TAR_WRITER_H
 
 #include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/StringSet.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/raw_ostream.h"
 
@@ -26,6 +27,7 @@ private:
   TarWriter(int FD, StringRef BaseDir);
   raw_fd_ostream OS;
   std::string BaseDir;
+  StringSet<> Files;
 };
 }