1 files changed, 2 insertions, 2 deletions
diff --git a/clang/lib/AST/ASTImporter.cpp b/clang/lib/AST/ASTImporter.cpp
index 200214b2445..ec345bb4db8 100644
--- a/clang/lib/AST/ASTImporter.cpp
+++ b/clang/lib/AST/ASTImporter.cpp
@@ -89,9 +89,9 @@ namespace clang {
       return "UnsupportedConstruct";
     case Unknown:
       return "Unknown error";
-    default:
-      llvm_unreachable("Invalid error code.");
     }
+    llvm_unreachable("Invalid error code.");
+    return "Invalid error code.";
   }
 
   void ImportError::log(raw_ostream &OS) const {