Re-enable testTensorListReserveWithNonScalarNumElements to work with mlir as well.

PiperOrigin-RevId: 466460987

tensorflow/core/kernels/list_kernels.cc

@@ -31,9 +31,11 @@ limitations under the License.
 #include "tensorflow/core/framework/allocator.h"
 #include "tensorflow/core/framework/op_kernel.h"
 #include "tensorflow/core/framework/register_types.h"
+#include "tensorflow/core/framework/tensor_shape.h"
 #include "tensorflow/core/framework/tensor_types.h"
 #include "tensorflow/core/framework/variant.h"
 #include "tensorflow/core/framework/variant_op_registry.h"
+#include "tensorflow/core/platform/errors.h"
 
 namespace tensorflow {
 
@@ -322,6 +324,11 @@ class TensorListReserve : public OpKernel {
   void Compute(OpKernelContext* c) override {
     PartialTensorShape element_shape;
     OP_REQUIRES_OK(c, TensorShapeFromTensor(c->input(0), &element_shape));
+    OP_REQUIRES(
+        c, TensorShapeUtils::IsScalar(c->input(1).shape()),
+        errors::InvalidArgument(
+            "The num_elements to reserve must be a tensor size 1, but got ",
+            c->input(1).shape()));
     int32_t num_elements = c->input(1).scalar<int32>()();
     OP_REQUIRES(c, num_elements >= 0,
                 errors::InvalidArgument("The num_elements to reserve must be a "

tensorflow/python/kernel_tests/data_structures/list_ops_test.py

@@ -94,6 +94,16 @@ class ListOpsTest(test_util.TensorFlowTestCase, parameterized.TestCase):
       l = list_ops.tensor_list_pop_back(l, element_dtype=dtypes.float32)
       self.evaluate(l)
 
+  def testTensorListReserveWithNonScalarNumElements(self):
+    # list_kernels.cc in tf/core/kernels raises InvalidArgumentError, and
+    # tf_ops_n_z.cc in tf/compiler/mlir/tf/ir raises UnknownError.
+    with self.assertRaises((errors.InvalidArgumentError, errors.UnknownError)):
+      l = list_ops.tensor_list_reserve(
+          element_dtype=dtypes.float32,
+          element_shape=[2, 3],
+          num_elements=constant_op.constant([1, 1]))
+      self.evaluate(l)
+
   def testPopUninitializedTensorUseListElementShape(self):
     l = list_ops.tensor_list_reserve(
         element_dtype=dtypes.float32, element_shape=[2, 3], num_elements=3)