Index: clang/include/clang/Basic/Specifiers.h
===================================================================
--- clang/include/clang/Basic/Specifiers.h
+++ clang/include/clang/Basic/Specifiers.h
@@ -46,10 +46,7 @@
     TSS_unsigned
   };
 
-  enum TypeSpecifiersPipe {
-    TSP_unspecified,
-    TSP_pipe
-  };
+  enum class TypeSpecifiersPipe { Unspecified, Pipe };
 
   /// Specifies the kind of type.
   enum TypeSpecifierType {
Index: clang/lib/Sema/DeclSpec.cpp
===================================================================
--- clang/lib/Sema/DeclSpec.cpp
+++ clang/lib/Sema/DeclSpec.cpp
@@ -877,7 +877,7 @@
   }
 
   if (isPipe) {
-    TypeSpecPipe = TSP_pipe;
+    TypeSpecPipe = static_cast<unsigned>(TypeSpecifiersPipe::Pipe);
   }
   return false;
 }