Validate that a and b are proper sparse tensors

PiperOrigin-RevId: 373274848
Change-Id: I3a665ac3a29dee9fb69bdf408a939330cb93ea75

Author: mihaimaruseac

tensorflow/core/kernels/sparse_sparse_binary_op_shared.cc

@@ -150,6 +150,7 @@ class SparseSparseBinaryOpShared : public OpKernel {
 
     const int64 a_nnz = a_indices_t->dim_size(0);
     const int64 b_nnz = b_indices_t->dim_size(0);
+
     const auto a_values = a_values_t->vec<T>();
     const auto b_values = b_values_t->vec<T>();
 
@@ -166,6 +167,14 @@ class SparseSparseBinaryOpShared : public OpKernel {
                     "Input shapes should be a vector but received shapes ",
                     a_shape_t->shape().DebugString(), " and ",
                     b_shape_t->shape().DebugString()));
+    const int num_dims = a_indices_t->dim_size(1);
+    OP_REQUIRES(
+        ctx, a_shape_t->NumElements() == num_dims,
+        errors::InvalidArgument("Second dimension of a_indices and length of "
+                                "a_shape must match, got ",
+                                num_dims, " and ", a_shape_t->NumElements()));
+    OP_REQUIRES(ctx, num_dims > 0,
+                errors::InvalidArgument("Tensors must not be empty"));
     OP_REQUIRES(ctx, a_shape_t->IsSameSize(*b_shape_t),
                 errors::InvalidArgument(
                     "Operands do not have the same ranks; got shapes: ",
@@ -180,12 +189,6 @@ class SparseSparseBinaryOpShared : public OpKernel {
                                           " for dimension ", i));
     }
 
-    OP_REQUIRES(
-        ctx, a_indices_t->dim_size(1) == b_indices_t->dim_size(1),
-        errors::InvalidArgument(
-            "Indices' dimensions do not match: got ", a_indices_t->dim_size(1),
-            " and ", b_indices_t->dim_size(1), " for the second dimension."));
-    const int num_dims = a_indices_t->dim_size(1);
     const auto a_indices_mat = a_indices_t->matrix<int64>();
     const auto b_indices_mat = b_indices_t->matrix<int64>();
     std::vector<T> a_augmented_values, b_augmented_values;