diff --git a/mlir/include/mlir/Dialect/Transform/Utils/Utils.h b/mlir/include/mlir/Dialect/Transform/Utils/Utils.h
--- a/mlir/include/mlir/Dialect/Transform/Utils/Utils.h
+++ b/mlir/include/mlir/Dialect/Transform/Utils/Utils.h
@@ -36,7 +36,7 @@
 void printPackedOrDynamicIndexList(OpAsmPrinter &printer, Operation *op,
                                    Value packed, Type packedType,
                                    OperandRange values, TypeRange valueTypes,
-                                   ArrayRef<int64_t> integers);
+                                   DenseI64ArrayAttr integers);
 
 /// Parser hook for custom directive in assemblyFormat.
 ///
diff --git a/mlir/lib/Dialect/Transform/Utils/Utils.cpp b/mlir/lib/Dialect/Transform/Utils/Utils.cpp
--- a/mlir/lib/Dialect/Transform/Utils/Utils.cpp
+++ b/mlir/lib/Dialect/Transform/Utils/Utils.cpp
@@ -16,9 +16,10 @@
 
 void mlir::transform::printPackedOrDynamicIndexList(
     OpAsmPrinter &printer, Operation *op, Value packed, Type packedType,
-    OperandRange values, TypeRange valueTypes, ArrayRef<int64_t> integers) {
+    OperandRange values, TypeRange valueTypes, DenseI64ArrayAttr integers) {
   if (packed) {
-    assert(values.empty() && integers.empty() && "expected no values/integers");
+    assert(values.empty() && (!integers || integers.empty()) &&
+           "expected no values/integers");
     printer << "*(" << packed << " : " << packedType << ")";
     return;
   }