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Diffstat (limited to 'tensorflow/python/ops/control_flow_ops.py')
| -rw-r--r-- | tensorflow/python/ops/control_flow_ops.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tensorflow/python/ops/control_flow_ops.py b/tensorflow/python/ops/control_flow_ops.py index 7be8628073..fb53d9ffea 100644 --- a/tensorflow/python/ops/control_flow_ops.py +++ b/tensorflow/python/ops/control_flow_ops.py @@ -833,6 +833,9 @@ class GradLoopState(object): if outer_grad_state: outer_forward_ctxt = outer_grad_state.forward_context else: + if not hasattr(forward_ctxt, 'outer_context'): + raise ValueError("Failed to call gradients on a while loop without" + "properly serializing graph via MetaGraphDef") outer_forward_ctxt = forward_ctxt.outer_context # Add the forward loop counter. |