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Fix nullptr deref in tf.raw_ops.CTCLoss. #49667

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merged 1 commit into from May 26, 2021
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Fix nullptr deref in tf.raw_ops.CTCLoss. #49667

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3 changes: 3 additions & 0 deletions tensorflow/core/kernels/ctc_loss_op.cc
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Expand Up @@ -67,6 +67,9 @@ class CTCLossOp : public OpKernel {

const TensorShape& inputs_shape = inputs->shape();
const int64 max_time = inputs_shape.dim_size(0);
OP_REQUIRES(ctx, max_time != 0,
errors::InvalidArgument(
"Max time or first dimension of input cannot be 0."));
const int64 batch_size = inputs_shape.dim_size(1);
const int64 num_classes_raw = inputs_shape.dim_size(2);
OP_REQUIRES(
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