diff --git a/flang/lib/Lower/OpenACC.cpp b/flang/lib/Lower/OpenACC.cpp
--- a/flang/lib/Lower/OpenACC.cpp
+++ b/flang/lib/Lower/OpenACC.cpp
@@ -99,7 +99,6 @@
   if (loopDirective.v == llvm::acc::ACCD_loop) {
     auto &firOpBuilder = converter.getFirOpBuilder();
     auto currentLocation = converter.getCurrentLocation();
-    llvm::ArrayRef<mlir::Type> argTy;
 
     // Add attribute extracted from clauses.
     const auto &accClauseList =