diff --git a/clang/tools/c-index-test/c-index-test.c b/clang/tools/c-index-test/c-index-test.c
index 79b3a74b7c96..ceb2ef6be4e4 100644
--- a/clang/tools/c-index-test/c-index-test.c
+++ b/clang/tools/c-index-test/c-index-test.c
@@ -738,8 +738,8 @@ static CXString CursorToText(CXCursor Cursor) {
     return text;
   }
   }
-  assert(0 && "unknown display type"); // no llvm_unreachable in C.
-  return text;                         // garbage
+  assert(0 && "unknown display type"); /* no llvm_unreachable in C. */
+  return /*garbage*/ text;
 }
 
 static void PrintCursor(CXCursor Cursor, const char *CommentSchemaFile) {