diff --git a/paddle/framework/block_desc.h b/paddle/framework/block_desc.h
index 41cf1dc385aa8ab3160e5e15213d28494f5da69d..b646ad5f3b67e22b933a56d88e4a1bf6e74a124e 100644
--- a/paddle/framework/block_desc.h
+++ b/paddle/framework/block_desc.h
@@ -19,6 +19,7 @@ limitations under the License. */
 #include <vector>
 #include "paddle/framework/op_desc.h"
 #include "paddle/framework/var_desc.h"
+#include "paddle/platform/macros.h"
 
 namespace paddle {
 namespace framework {
@@ -34,9 +35,6 @@ class BlockDescBind {
   BlockDescBind(ProgramDescBind *prog, BlockDesc *desc)
       : prog_(prog), desc_(desc), need_update_(false) {}
 
-  BlockDescBind(const BlockDescBind &o) = delete;
-  BlockDescBind &operator=(const BlockDescBind &o) = delete;
-
   int32_t ID() const { return desc_->idx(); }
 
   int32_t Parent() const { return desc_->parent_idx(); }
@@ -68,6 +66,8 @@ class BlockDescBind {
 
   std::deque<std::unique_ptr<OpDescBind>> ops_;
   std::unordered_map<std::string, std::unique_ptr<VarDescBind>> vars_;
+
+  DISABLE_COPY_AND_ASSIGN(BlockDescBind);
 };
 }  // namespace framework
 }  // namespace paddle
diff --git a/paddle/framework/op_info.h b/paddle/framework/op_info.h
index 470336d367566b342af6a7dac9c9cdf465101ea2..9672e540c8dd7bc3ee7993200e606320087d9ba7 100644
--- a/paddle/framework/op_info.h
+++ b/paddle/framework/op_info.h
@@ -20,6 +20,7 @@
 #include "paddle/framework/attribute.h"
 #include "paddle/framework/op_desc.h"
 #include "paddle/framework/type_defs.h"
+#include "paddle/platform/macros.h"
 
 namespace paddle {
 namespace framework {
@@ -67,11 +68,6 @@ class OpInfoMap {
  public:
   static OpInfoMap& Instance();
 
-  OpInfoMap(const OpInfoMap& o) = delete;
-  OpInfoMap(OpInfoMap&& o) = delete;
-  OpInfoMap& operator=(const OpInfoMap& o) = delete;
-  OpInfoMap& operator=(OpInfoMap&& o) = delete;
-
   bool Has(const std::string& op_type) const {
     return map_.find(op_type) != map_.end();
   }
@@ -107,6 +103,8 @@ class OpInfoMap {
  private:
   OpInfoMap() = default;
   std::unordered_map<std::string, const OpInfo> map_;
+
+  DISABLE_COPY_AND_ASSIGN(OpInfoMap);
 };
 
 }  // namespace framework
diff --git a/paddle/framework/program_desc.h b/paddle/framework/program_desc.h
index 06ffcd4b15078f62ea8b7a3714e73de799530785..9b34a06aeff94e6fa855f6f287a73889e2a4faee 100644
--- a/paddle/framework/program_desc.h
+++ b/paddle/framework/program_desc.h
@@ -16,6 +16,7 @@ limitations under the License. */
 
 #include <vector>
 #include "paddle/framework/framework.pb.h"
+#include "paddle/platform/macros.h"
 
 namespace paddle {
 namespace framework {
@@ -26,9 +27,6 @@ class ProgramDescBind {
  public:
   static ProgramDescBind &Instance(ProgramDesc *prog);
 
-  ProgramDescBind(const ProgramDescBind &o) = delete;
-  ProgramDescBind &operator=(const ProgramDescBind &o) = delete;
-
   BlockDescBind *AppendBlock(const BlockDescBind &parent);
 
   BlockDescBind *Block(size_t idx) { return blocks_[idx].get(); }
@@ -46,6 +44,8 @@ class ProgramDescBind {
   ProgramDesc *prog_;
 
   std::vector<std::unique_ptr<BlockDescBind>> blocks_;
+
+  DISABLE_COPY_AND_ASSIGN(ProgramDescBind);
 };
 }  // namespace framework
 }  // namespace paddle
diff --git a/paddle/framework/scope.h b/paddle/framework/scope.h
index c93b03e48130afe9568089b6a7586c4185d1d5b4..7047f0d55e9844aec19892631fe4b5b387bf89ca 100644
--- a/paddle/framework/scope.h
+++ b/paddle/framework/scope.h
@@ -19,6 +19,7 @@ limitations under the License. */
 #include <unordered_map>
 
 #include "paddle/framework/variable.h"
+#include "paddle/platform/macros.h"
 
 namespace paddle {
 namespace framework {
@@ -38,11 +39,6 @@ class Scope {
   Scope() {}
   ~Scope();
 
-  // Disable Copy, Assign, Move.
-  Scope(const Scope& other) = delete;
-  Scope& operator=(const Scope& other) = delete;
-  Scope(Scope&& other) = delete;
-
   /// Create a sub-scope. Returns a reference other than a pointer so
   /// to prevent from manual deletion.
   /// Mark it to const because that new kid scope cannot change parent scope.
@@ -73,6 +69,8 @@ class Scope {
   std::unordered_map<std::string, Variable*> vars_;
   mutable std::list<Scope*> kids_;
   Scope const* parent_{nullptr};
+
+  DISABLE_COPY_AND_ASSIGN(Scope);
 };
 
 }  // namespace framework
diff --git a/paddle/framework/tensor_array.h b/paddle/framework/tensor_array.h
index e76f33d2c0818aa6091d6d5edb1cdfd1e9122476..22ae6a966f90c47fe8b4bbaaf5eb227c39d84173 100644
--- a/paddle/framework/tensor_array.h
+++ b/paddle/framework/tensor_array.h
@@ -47,13 +47,6 @@ class TensorArray {
   // max number of values allowed to store.
   const size_t MAX_SIZE{100000};
 
-  /*
-   * Inputs:
-   *   - value_shared: share memory between tensors.
-   */
-  explicit TensorArray(bool values_shared = true)
-      : values_shared_(values_shared) {}
-
   /*
    * Read the value at location `index` in the `TensorArray`.
    */
@@ -111,7 +104,6 @@ class TensorArray {
 
  private:
   mutable std::vector<LoDTensor> values_;
-  bool values_shared_;
 };  // class TensorArray
 
 }  // namespace framework
diff --git a/paddle/operators/recurrent_op.cc b/paddle/operators/recurrent_op.cc
index 80de229c333f645fb3098b97fa076c6b77bb7ca9..04c4c24951f5db572486ded5edfc26948a821682 100644
--- a/paddle/operators/recurrent_op.cc
+++ b/paddle/operators/recurrent_op.cc
@@ -30,36 +30,39 @@ using LoDTensor = framework::LoDTensor;
 
 void RecurrentAlgorithm::Run(const Scope& scope,
                              const platform::DeviceContext& dev_ctx) const {
-  auto step_scopes = GetStepScopes(scope);
-  rnn::SegmentInputs(step_scopes, arg_->inlinks, seq_len_,
-                     false /*infer_shape_mode*/);
-  InitMemories(step_scopes[0], false /*infer_shape_mode*/);
+  auto* input0 = scope.FindVar(arg_->inlinks[0]);
+  PADDLE_ENFORCE_NOT_NULL(input0);
+  size_t seq_len = input0->GetMutable<LoDTensor>()->dims()[0];
+  PADDLE_ENFORCE_GT(seq_len, 0);
 
-  for (size_t step_id = 0; step_id < seq_len_; step_id++) {
-    // create output alias variables
+  CreateScopes(scope, seq_len);
+  auto& step_scopes = GetStepScopes(scope);
+  rnn::SegmentInputs(step_scopes, arg_->inlinks, seq_len);
+  InitMemories(step_scopes[0]);
+
+  for (size_t step_id = 0; step_id < seq_len; step_id++) {
     if (step_id > 0) {
-      rnn::LinkMemories(step_scopes, arg_->memories, step_id, -1,
-                        false /*infer_shape_mode*/);
+      rnn::LinkMemories(step_scopes, arg_->memories, step_id, -1);
     }
     (*stepnet_)->Run(*step_scopes[step_id], dev_ctx);
   }
-  rnn::ConcatOutputs(step_scopes, arg_->outlinks, seq_len_,
-                     false /*infer_shape_mode*/);
+  rnn::ConcatOutputs(step_scopes, arg_->outlinks, seq_len);
 }
 
-void RecurrentAlgorithm::CreateScopes(const Scope& scope) const {
+void RecurrentAlgorithm::CreateScopes(const Scope& scope,
+                                      size_t seq_len) const {
   // TODO(superjom) Only two scopes are needed for inference, this case will be
   // supported later.
-  auto step_scopes_var = scope.FindVar(arg_->step_scopes);
+  auto* step_scopes_var = scope.FindVar(arg_->step_scopes);
   PADDLE_ENFORCE(step_scopes_var != nullptr, "");
-  auto step_scopes = step_scopes_var->GetMutable<std::vector<Scope*>>();
+  auto* step_scopes = step_scopes_var->GetMutable<std::vector<Scope*>>();
 
   // Now all variables in scope must be created outside of op.
   PADDLE_ENFORCE_NOT_NULL(stepnet_);
   PADDLE_ENFORCE(!(*stepnet_)->Outputs().empty(), "stepnet_ op has no outputs");
 
-  if (seq_len_ > step_scopes->size()) {
-    for (size_t i = step_scopes->size(); i < seq_len_; ++i) {
+  if (seq_len > step_scopes->size()) {
+    for (size_t i = step_scopes->size(); i < seq_len; ++i) {
       auto& step_scope = scope.NewScope();
 
       // create step net's temp inputs
@@ -82,8 +85,7 @@ void RecurrentAlgorithm::CreateScopes(const Scope& scope) const {
   }
 }
 
-void RecurrentAlgorithm::InitMemories(Scope* step_scope,
-                                      bool infer_shape_mode) const {
+void RecurrentAlgorithm::InitMemories(Scope* step_scope) const {
   for (auto& attr : arg_->memories) {
     auto* pre_mem = step_scope->NewVar(attr.pre_var)->GetMutable<LoDTensor>();
     PADDLE_ENFORCE(step_scope->FindVar(attr.boot_var) != nullptr,
@@ -91,12 +93,9 @@ void RecurrentAlgorithm::InitMemories(Scope* step_scope,
                    attr.boot_var);
     auto* boot_mem =
         step_scope->FindVar(attr.boot_var)->GetMutable<LoDTensor>();
-    if (infer_shape_mode) {
-      pre_mem->Resize(boot_mem->dims());
-      PADDLE_ENFORCE_EQ(pre_mem->dims().size(), 2);
-    } else {
-      pre_mem->ShareDataWith<float>(*boot_mem);
-    }
+    pre_mem->Resize(boot_mem->dims());
+    PADDLE_ENFORCE_EQ(pre_mem->dims().size(), 2);
+    pre_mem->ShareDataWith<float>(*boot_mem);
   }
 }
 
@@ -146,23 +145,23 @@ class RecurrentAlgorithmProtoAndCheckerMaker
 
 void RecurrentGradientAlgorithm::Run(
     const Scope& scope, const platform::DeviceContext& dev_ctx) const {
-  auto step_scopes = GetStepScopes(scope);
-  rnn::SegmentInputs(step_scopes, arg_->inlinks, seq_len_,
-                     false /*infer_shape_mode*/);
-  for (int step_id = seq_len_ - 1; step_id >= 0; --step_id) {
-    if (static_cast<size_t>(step_id) != seq_len_ - 1) {
-      rnn::LinkMemories(step_scopes, arg_->memories, step_id, 1,
-                        false /*infer_shape_mode*/);
+  auto* input0 = scope.FindVar(arg_->inlinks[0]);
+  PADDLE_ENFORCE_NOT_NULL(input0);
+  size_t seq_len = input0->GetMutable<LoDTensor>()->dims()[0];
+  auto& step_scopes = GetStepScopes(scope);
+  rnn::SegmentInputs(step_scopes, arg_->inlinks, seq_len);
+  for (int step_id = seq_len - 1; step_id >= 0; --step_id) {
+    if (step_id != seq_len - 1) {
+      rnn::LinkMemories(step_scopes, arg_->memories, step_id, 1);
     }
     (*stepnet_)->Run(*step_scopes[step_id], dev_ctx);
   }
-  LinkBootMemoryGradients(step_scopes[0], false);
-  rnn::ConcatOutputs(step_scopes, arg_->outlinks, seq_len_,
-                     false /*infer_shape_mode*/);
+  rnn::ConcatOutputs(step_scopes, arg_->outlinks, seq_len);
+  LinkBootMemoryGradients(step_scopes[0]);
 }
 
 void RecurrentGradientAlgorithm::LinkBootMemoryGradients(
-    Scope* step_scope, bool infer_shape_mode) const {
+    Scope* step_scope) const {
   for (auto& attr : arg_->memories) {
     PADDLE_ENFORCE(step_scope->FindVar(attr.var) != nullptr,
                    "memory variable [%s] does not exists", attr.var);
@@ -171,11 +170,8 @@ void RecurrentGradientAlgorithm::LinkBootMemoryGradients(
     auto* mem_grad = step_scope->NewVar(attr.var)->GetMutable<LoDTensor>();
     auto* boot_mem_grad =
         step_scope->NewVar(attr.boot_var)->GetMutable<LoDTensor>();
-    if (infer_shape_mode) {
-      boot_mem_grad->Resize(mem_grad->dims());
-    } else {
-      boot_mem_grad->ShareDataWith<float>(*mem_grad);
-    }
+    boot_mem_grad->Resize(mem_grad->dims());
+    boot_mem_grad->ShareDataWith<float>(*mem_grad);
   }
 }
 
diff --git a/paddle/operators/recurrent_op.h b/paddle/operators/recurrent_op.h
index c6b9a5533eece9057449b5c875ddcb3cefe716f0..253d7e3284360ceaddce9ef5f8f9a3ea4793d740 100644
--- a/paddle/operators/recurrent_op.h
+++ b/paddle/operators/recurrent_op.h
@@ -48,7 +48,7 @@ class RecurrentAlgorithm {
    * NOTE the scopes are reused in both the forward and backward, so just
    * create once and expand its size if more steps need.
    */
-  void CreateScopes(const framework::Scope& scope) const;
+  void CreateScopes(const framework::Scope& scope, size_t seq_len) const;
 
   const std::vector<framework::Scope*>& GetStepScopes(
       const framework::Scope& scope) const {
@@ -56,12 +56,11 @@ class RecurrentAlgorithm {
                 ->GetMutable<std::vector<framework::Scope*>>();
   }
 
-  void InitMemories(framework::Scope* step_scopes, bool infer_shape_mode) const;
+  void InitMemories(framework::Scope* step_scopes) const;
 
  private:
   std::unique_ptr<framework::OperatorBase>* stepnet_;
   rnn::Argument* arg_;
-  mutable size_t seq_len_;
 };
 
 class RecurrentGradientAlgorithm {
@@ -86,8 +85,7 @@ class RecurrentGradientAlgorithm {
   void Run(const framework::Scope& scope,
            const platform::DeviceContext& dev_ctx) const;
 
-  void LinkBootMemoryGradients(framework::Scope* step_scopes,
-                               bool infer_shape_mode) const;
+  void LinkBootMemoryGradients(framework::Scope* step_scopes) const;
 
  protected:
   inline const std::vector<framework::Scope*>& GetStepScopes(
@@ -98,7 +96,6 @@ class RecurrentGradientAlgorithm {
 
  private:
   rnn::Argument* arg_;
-  mutable size_t seq_len_;
   std::unique_ptr<framework::OperatorBase>* stepnet_;
 };
 
@@ -123,6 +120,7 @@ class RecurrentOp : public framework::OperatorBase {
   void set_stepnet(std::unique_ptr<OperatorBase> net) {
     stepnet_ = std::move(net);
   }
+
   const OperatorBase& stepnet() const { return *stepnet_; }
 
   static const rnn::ArgumentName kArgName;
diff --git a/paddle/operators/rnn/recurrent_op_utils.cc b/paddle/operators/rnn/recurrent_op_utils.cc
index a767009d2366e20d2ebd35f562b8df7d408f2d4e..ef317a71f12c6de974bd8715bb08122b761fae37 100644
--- a/paddle/operators/rnn/recurrent_op_utils.cc
+++ b/paddle/operators/rnn/recurrent_op_utils.cc
@@ -25,7 +25,7 @@ using LoDTensor = framework::LoDTensor;
 
 void SegmentInputs(const std::vector<Scope*>& step_scopes,
                    const std::vector<std::string>& inlinks,
-                   const size_t seq_len, bool infer_shape_mode) {
+                   const size_t seq_len) {
   PADDLE_ENFORCE(!inlinks.empty(), "no in links are provided.");
   for (size_t i = 0; i < inlinks.size(); ++i) {
     // global inputs
@@ -41,11 +41,9 @@ void SegmentInputs(const std::vector<Scope*>& step_scopes,
     for (size_t j = 0; j < seq_len; j++) {
       Tensor* step_input =
           step_scopes[j]->NewVar(inlinks[i])->GetMutable<Tensor>();
-      if (!infer_shape_mode) {
-        // The input of operators of each step is Tensor here.
-        // Maybe need to modify Slice function.
-        *step_input = input->Slice<float>(j, j + 1);
-      }
+      // The input of operators of each step is Tensor here.
+      // Maybe need to modify Slice function.
+      *step_input = input->Slice<float>(j, j + 1);
       step_input->Resize(step_dims);
     }
   }
@@ -53,39 +51,35 @@ void SegmentInputs(const std::vector<Scope*>& step_scopes,
 
 void ConcatOutputs(const std::vector<Scope*>& step_scopes,
                    const std::vector<std::string>& outlinks,
-                   const size_t seq_len, bool infer_shape_mode) {
+                   const size_t seq_len) {
   for (size_t i = 0; i < outlinks.size(); i++) {
-    auto output_var = step_scopes[0]->parent().FindVar(outlinks[i]);
+    auto* output_var = step_scopes[0]->parent().FindVar(outlinks[i]);
     PADDLE_ENFORCE_NOT_NULL(output_var, "output link [%s] is not in scope.",
                             outlinks[i]);
     LoDTensor* output = output_var->GetMutable<LoDTensor>();
 
-    if (infer_shape_mode) {
-      auto step_scope_var = step_scopes[0]->FindVar(outlinks[i]);
-      PADDLE_ENFORCE_NOT_NULL(step_scope_var, "%s not in scope", outlinks[i]);
-      f::DDim step_dims =
-          step_scope_var->template GetMutable<LoDTensor>()->dims();
-      std::vector<int64_t> dims_vec = vectorize(step_dims);
-      dims_vec.insert(dims_vec.begin(), seq_len);
-      output->Resize(f::make_ddim(dims_vec));
-    } else {
-      output->mutable_data<float>(platform::CPUPlace());
-      for (size_t j = 0; j < seq_len; j++) {
-        LoDTensor* step_output =
-            step_scopes[j]->FindVar(outlinks[i])->GetMutable<LoDTensor>();
-        // TODO(luotao02) data type and platform::DeviceContext() should set
-        // correctly
-        (output->Slice<float>(j, j + 1))
-            .CopyFrom<float>(*step_output, platform::CPUPlace());
-      }
+    auto* step_scope_var = step_scopes[0]->FindVar(outlinks[i]);
+    PADDLE_ENFORCE_NOT_NULL(step_scope_var, "%s not in scope", outlinks[i]);
+    f::DDim step_dims =
+        step_scope_var->template GetMutable<LoDTensor>()->dims();
+    std::vector<int64_t> dims_vec = vectorize(step_dims);
+    dims_vec.insert(dims_vec.begin(), seq_len);
+    output->Resize(f::make_ddim(dims_vec));
+    output->mutable_data<float>(platform::CPUPlace());
+    for (size_t j = 0; j < seq_len; j++) {
+      LoDTensor* step_output =
+          step_scopes[j]->FindVar(outlinks[i])->GetMutable<LoDTensor>();
+      // TODO(luotao02) data type and platform::DeviceContext() should set
+      // correctly
+      (output->Slice<float>(j, j + 1))
+          .CopyFrom<float>(*step_output, platform::CPUPlace());
     }
   }
 }
 
 void LinkMemories(const std::vector<Scope*>& scopes,
                   const std::vector<rnn::MemoryAttr>& memories,
-                  const size_t step_id, const int offset,
-                  bool infer_shape_mode) {
+                  const size_t step_id, const int offset) {
   PADDLE_ENFORCE_LT(step_id, scopes.size(),
                     "step [%d] is out of range of step scopes' size [%d]",
                     step_id, scopes.size());
@@ -95,16 +89,13 @@ void LinkMemories(const std::vector<Scope*>& scopes,
       step_id + offset, scopes.size(),
       "offset [%d] is out of range, it must be less than (%d - %d)", offset,
       scopes.size(), step_id);
-  auto scope = scopes[step_id];
-  auto linked_scope = scopes[step_id + offset];
+  auto* scope = scopes[step_id];
+  auto* linked_scope = scopes[step_id + offset];
   for (auto& attr : memories) {
-    auto mem = scope->FindVar(attr.pre_var)->GetMutable<LoDTensor>();
-    auto linked_mem = linked_scope->FindVar(attr.var)->GetMutable<LoDTensor>();
-    if (infer_shape_mode) {
-      mem->Resize(linked_mem->dims());
-    } else {
-      mem->ShareDataWith<float>(*linked_mem);
-    }
+    auto* mem = scope->FindVar(attr.pre_var)->GetMutable<LoDTensor>();
+    auto* linked_mem = linked_scope->FindVar(attr.var)->GetMutable<LoDTensor>();
+    mem->Resize(linked_mem->dims());
+    mem->ShareDataWith<float>(*linked_mem);
   }
 }
 
@@ -115,11 +106,11 @@ void InitArgument(const ArgumentName& name, Argument* arg,
   arg->inlinks = op.Inputs(name.inlinks);
   arg->outlinks = op.Outputs(name.outlinks);
 
-  auto boot_memories =
+  auto& boot_memories =
       is_grad ? op.Outputs(name.boot_memories) : op.Inputs(name.boot_memories);
   // attributes
-  auto memories = op.Attr<std::vector<std::string>>(name.memories);
-  auto pre_memories = op.Attr<std::vector<std::string>>(name.pre_memories);
+  auto& memories = op.Attr<std::vector<std::string>>(name.memories);
+  auto& pre_memories = op.Attr<std::vector<std::string>>(name.pre_memories);
 
   PADDLE_ENFORCE(memories.size() == boot_memories.size(),
                  "the size of memories, boot_memories don't match:%d,%d",
diff --git a/paddle/operators/rnn/recurrent_op_utils.h b/paddle/operators/rnn/recurrent_op_utils.h
index 9c777f1e9067a3e2ceb9d23f7bf7d3c73343c91f..fd17b9b88915cf458ff2836b5c5d8f84cd9b65b5 100644
--- a/paddle/operators/rnn/recurrent_op_utils.h
+++ b/paddle/operators/rnn/recurrent_op_utils.h
@@ -64,18 +64,18 @@ struct ArgumentName {
  */
 void SegmentInputs(const std::vector<Scope*>& step_scopes,
                    const std::vector<std::string>& inlinks,
-                   const size_t seq_len, bool infer_shape_mode);
+                   const size_t seq_len);
 
 /**
  * Process outputs of step nets and merge to variables.
  */
 void ConcatOutputs(const std::vector<Scope*>& step_scopes,
                    const std::vector<std::string>& outlinks,
-                   const size_t seq_len, bool infer_shape_mode);
+                   const size_t seq_len);
 
 void LinkMemories(const std::vector<Scope*>& step_scopes,
                   const std::vector<MemoryAttr>& memories, const size_t step_id,
-                  const int offset, bool infer_shape_mode);
+                  const int offset);
 
 void InitArgument(const ArgumentName& name, Argument* arg,
                   const framework::OperatorBase& op, bool is_grad = false);
diff --git a/paddle/operators/sum_op.cc b/paddle/operators/sum_op.cc
index 5d76313aeb96c0c8204f64aee1057f753ec85d6b..c54843faa698654dafac786979045bebf0ebc95d 100644
--- a/paddle/operators/sum_op.cc
+++ b/paddle/operators/sum_op.cc
@@ -22,14 +22,15 @@ class SumOp : public framework::OperatorWithKernel {
 
  protected:
   void InferShape(framework::InferShapeContextBase* ctx) const override {
+    PADDLE_ENFORCE(ctx->HasInputs("X"), "Inputs(X) should not be null");
     auto x_dims = ctx->GetInputsDim("X");
-    PADDLE_ENFORCE(!x_dims.empty(), "Input(X) of SumOp should not be null.");
     PADDLE_ENFORCE(ctx->HasOutput("Out"),
                    "Output(Out) of SumOp should not be null.");
 
-    auto in_dim = x_dims[0];
     size_t N = x_dims.size();
     PADDLE_ENFORCE_GT(N, 1, "Input tensors count should > 1.");
+
+    auto in_dim = x_dims[0];
     for (size_t i = 1; i < N; i++) {
       auto dim = x_dims[i];
       PADDLE_ENFORCE(in_dim == dim, "Input tensors must have same shape");
diff --git a/paddle/platform/macros.h b/paddle/platform/macros.h
index 4a04a38c0c6f905639004dea2f4416ecc57c8620..feae7bdd77e3a0d02f33fb33991648408f542d0e 100644
--- a/paddle/platform/macros.h
+++ b/paddle/platform/macros.h
@@ -16,8 +16,10 @@ limitations under the License. */
 
 // Disable the copy and assignment operator for a class.
 #ifndef DISABLE_COPY_AND_ASSIGN
-#define DISABLE_COPY_AND_ASSIGN(classname) \
- private:                                  \
-  classname(const classname&) = delete;    \
-  classname& operator=(const classname&) = delete
+#define DISABLE_COPY_AND_ASSIGN(classname)         \
+ private:                                          \
+  classname(const classname&) = delete;            \
+  classname(const classname&&) = delete;           \
+  classname& operator=(const classname&) = delete; \
+  classname& operator=(const classname&&) = delete
 #endif
diff --git a/python/paddle/v2/framework/tests/test_recurrent_op.py b/python/paddle/v2/framework/tests/test_recurrent_op.py
index 92161ae5dd93d34d898a2027435cc5e55611bcd0..1f114432c09f29fab6cd56de00dff341785ae0e4 100644
--- a/python/paddle/v2/framework/tests/test_recurrent_op.py
+++ b/python/paddle/v2/framework/tests/test_recurrent_op.py
@@ -16,14 +16,17 @@ class PySimpleRNN(object):
     '''
 
     def __init__(self, input_dim=30, batch_size=50, weight_dim=15, sent_len=11):
-        self.x = np.random.normal(size=(sent_len, batch_size, input_dim))
-        self.W = np.random.normal(size=(input_dim, input_dim))
-        self.U = np.random.normal(size=(input_dim, input_dim))
-        self.h_boot = np.random.normal(size=(batch_size, input_dim))
+        self.x = np.random.normal(size=(sent_len, batch_size,
+                                        input_dim)).astype("float32")
+        self.W = np.random.normal(size=(input_dim, input_dim)).astype("float32")
+        self.U = np.random.normal(size=(input_dim, input_dim)).astype("float32")
+        self.h_boot = np.random.normal(size=(batch_size,
+                                             input_dim)).astype("float32")
 
         # memories
         self.mems = [
-            np.zeros(shape=(batch_size, input_dim)) for i in range(sent_len)
+            np.zeros(shape=(batch_size, input_dim)).astype("float32")
+            for i in range(sent_len)
         ]
 
     def forward(self):
@@ -36,7 +39,7 @@ class PySimpleRNN(object):
         return [self.x[i] for i in range(self.x.shape[0])]
 
     def concat_outputs(self):
-        return np.array(self.mems)
+        return np.array(self.mems).astype("float32")
 
     def step(self, step_id, x):
         '''
@@ -47,8 +50,8 @@ class PySimpleRNN(object):
             pre_mem = self.mems[step_id - 1]
         else:
             pre_mem = self.h_boot
-        xW = np.matmul(x, self.W)
-        hU = np.matmul(pre_mem, self.U)
+        xW = np.matmul(x, self.W).astype("float32")
+        hU = np.matmul(pre_mem, self.U).astype("float32")
 
         sum = xW + hU
         self.mems[step_id] = py_sigmoid(sum)
@@ -102,7 +105,8 @@ class RecurrentOpTest(unittest.TestCase):
         self.create_step_net()
         ctx = core.DeviceContext.create(core.CPUPlace())
         self.rnnop.run(self.scope, ctx)
-        return np.array(self.scope.find_var("h@mem").get_tensor())
+        return np.array(self.scope.find_var("h@mem").get_tensor()).astype(
+            "float32")
 
     def create_global_variables(self):
         # create inlink
@@ -142,7 +146,7 @@ class RecurrentOpTest(unittest.TestCase):
         stepnet = core.Net.create()
         x_fc_op = Operator("mul", X="x", Y="W", Out="Wx")
         h_fc_op = Operator("mul", X="h@pre", Y="U", Out="Uh")
-        sum_op = Operator("add", X="Wx", Y="Uh", Out="sum")
+        sum_op = Operator("sum", X=["Wx", "Uh"], Out="sum")
         sig_op = Operator("sigmoid", X="sum", Y="h@mem")
 
         for op in [x_fc_op, h_fc_op, sum_op, sig_op]:
@@ -179,7 +183,7 @@ class RecurrentGradientOpTest(unittest.TestCase):
         stepnet = core.Net.create()
         x_fc_op = Operator("mul", X="x@alias", Y="W", Out="Wx")
         h_fc_op = Operator("mul", X="h@pre", Y="U", Out="Uh")
-        sum_op = Operator("add", X="Wx", Y="Uh", Out="sum")
+        sum_op = Operator("sum", X=["Wx", "Uh"], Out="sum")
         sig_op = Operator("sigmoid", X="sum", Y="h@alias")
 
         for op in [x_fc_op, h_fc_op, sum_op, sig_op]:
@@ -197,7 +201,4 @@ class RecurrentGradientOpTest(unittest.TestCase):
 
 
 if __name__ == '__main__':
-    exit(
-        0
-    )  # FIXME(yuyang18): InferShape has been removed, this unittest may error
     unittest.main()