diff --git a/mindspore/lite/tools/anf_importer/import_from_meta_graphT.cc b/mindspore/lite/tools/anf_importer/import_from_meta_graphT.cc
index 3f485f15a6..f26c9a7d6a 100644
--- a/mindspore/lite/tools/anf_importer/import_from_meta_graphT.cc
+++ b/mindspore/lite/tools/anf_importer/import_from_meta_graphT.cc
@@ -58,7 +58,11 @@ int AnfImporterFromMetaGraphT::ConverterConstTensor() {
         MS_LOG(ERROR) << "new char[] failed";
         return RET_MEMORY_FAILED;
       }
-      std::memcpy(tensor_data, tensor->data.data(), size);
+      auto ret = memcpy_s(tensor_data, size, tensor->data.data(), size);
+      if (EOK != ret) {
+        MS_LOG(ERROR) << "memcpy_s error";
+        return RET_MEMORY_FAILED;
+      }
       param_value->set_tensor_addr(tensor_data);
       param_value->set_tensor_size(size);
       parameter->set_default_param(param_value);
@@ -154,8 +158,16 @@ int AnfImporterFromMetaGraphT::ConvertAbstract(const std::unique_ptr<schema::CNo
       }
       auto tuple_get_item_prim = NewValueNode(tuple_get_item_prim_ptr);
       auto get_item_value = NewValueNode(MakeValue<int>(i));
+      if (tuple_get_item_prim == nullptr || get_item_value == nullptr) {
+        MS_LOG(ERROR) << "NewValueNode is nullptr";
+        return RET_NULL_PTR;
+      }
       std::vector<AnfNodePtr> inputs{tuple_get_item_prim, dst_cnode, get_item_value};
       CNodePtr get_item_cnode = func_graph_->NewCNode(inputs);
+      if (get_item_cnode == nullptr) {
+        MS_LOG(ERROR) << "NewCNode is nullptr";
+        return RET_NULL_PTR;
+      }
       get_item_cnode->set_fullname_with_scope(src_cnode->name + "_getitem_" + std::to_string(i));
       AddNode(out_tensor_id, get_item_cnode);
     }
@@ -216,6 +228,10 @@ int AnfImporterFromMetaGraphT::AddReturnCNode() {
       make_tuple_inputs.emplace_back(cNode);
     }
     auto make_tuple_cnode = func_graph_->NewCNode(make_tuple_inputs);
+    if (make_tuple_cnode == nullptr) {
+      MS_LOG(ERROR) << "NewCNode is nullptr";
+      return RET_NULL_PTR;
+    }
     make_tuple_cnode->set_fullname_with_scope("return tuple");
 
     std::vector<AnfNodePtr> op_inputs;
@@ -246,6 +262,10 @@ int AnfImporterFromMetaGraphT::AddReturnCNode() {
     }
     op_inputs.emplace_back(cnode);
     auto return_cnode = func_graph_->NewCNode(op_inputs);
+    if (return_cnode == nullptr) {
+      MS_LOG(ERROR) << "NewCNode is nullptr";
+      return RET_NULL_PTR;
+    }
     return_cnode->set_fullname_with_scope("return");
     func_graph_->set_return(return_cnode);
   }
diff --git a/mindspore/lite/tools/anf_importer/import_from_meta_graphT.h b/mindspore/lite/tools/anf_importer/import_from_meta_graphT.h
index 0e16c3742e..372f8d3042 100644
--- a/mindspore/lite/tools/anf_importer/import_from_meta_graphT.h
+++ b/mindspore/lite/tools/anf_importer/import_from_meta_graphT.h
@@ -27,7 +27,7 @@
 namespace mindspore::lite {
 class AnfImporterFromMetaGraphT : public AnfImporter {
  public:
-  explicit AnfImporterFromMetaGraphT(schema::MetaGraphT *meta_graph, FuncGraphPtr func_graph)
+  AnfImporterFromMetaGraphT(schema::MetaGraphT *meta_graph, FuncGraphPtr func_graph)
       : meta_graph_(meta_graph), func_graph_(std::move(func_graph)) {}
 
   ~AnfImporterFromMetaGraphT() override = default;
diff --git a/mindspore/lite/tools/anf_importer/import_from_protobuf.cc b/mindspore/lite/tools/anf_importer/import_from_protobuf.cc
index d1b696c4bf..a647a35a59 100644
--- a/mindspore/lite/tools/anf_importer/import_from_protobuf.cc
+++ b/mindspore/lite/tools/anf_importer/import_from_protobuf.cc
@@ -43,7 +43,6 @@ using int64 = int64_t;
 using uint64 = uint64_t;
 
 namespace mindspore::lite {
-
 static constexpr char kConstantValueNode[] = "Constant";
 
 enum ParseForm : int {
@@ -212,7 +211,7 @@ int AnfImporterFromProtobuf::BuildParameterForFuncGraph(const ParameterPtr &node
   node->set_name(value_proto.name());
   const auto &type_proto = value_proto.type();
   if (!type_proto.has_tensor_type()) {
-    MS_LOG(ERROR) << "onnx TypeProto has no tesor_type! ";
+    MS_LOG(ERROR) << "onnx TypeProto has no tensor_type! ";
     return RET_PARAM_INVALID;
   }
   const onnx::TypeProto_Tensor &tensor_typeproto = type_proto.tensor_type();
@@ -248,6 +247,7 @@ int AnfImporterFromProtobuf::BuildParameterForFuncGraph(const ParameterPtr &node
     std::string initial_data = initialize_proto.raw_data();
     auto *tensor_data_buf = reinterpret_cast<uint8_t *>(tensor_info->MutableData());
     if (tensor_data_buf == nullptr) {
+      delete tensor_info;
       return RET_MEMORY_FAILED;
     }
     tensor_info->set_data(nullptr);
@@ -261,6 +261,7 @@ int AnfImporterFromProtobuf::BuildParameterForFuncGraph(const ParameterPtr &node
 
     ParamValueLitePtr param_value = std::make_shared<ParamValueLite>();
     if (param_value == nullptr) {
+      delete tensor_info;
       return RET_NULL_PTR;
     }
     param_value->set_tensor_addr(tensor_data_buf);
@@ -367,22 +368,38 @@ bool AnfImporterFromProtobuf::ObtainCNodeAttrInTensorForm(const PrimitivePtr &pr
       std::make_shared<tensor::Tensor>(kDefaultValueSwitchMap[attr_tensor_type], shape_vector);
     auto *tensor_data_buf = reinterpret_cast<uint8_t *>(tensor_info->data_c());
     ret = memcpy_s(tensor_data_buf, tensor_info->Size(), tensor_buf.data(), tensor_buf.size());
+    if (EOK != ret) {
+      MS_LOG(ERROR) << "memcpy_s error";
+      return false;
+    }
     prim->set_attr(attr_name, MakeValue(tensor_info));
   } else {
     if (attr_tensor_type == onnx::TensorProto_DataType_DOUBLE) {
       size_t data_size = sizeof(double);
       double attr_value = 0.0;
       ret = memcpy_s(&attr_value, data_size, tensor_buf.data(), tensor_buf.size());
+      if (EOK != ret) {
+        MS_LOG(ERROR) << "memcpy_s error";
+        return false;
+      }
       prim->set_attr(attr_name, MakeValue<double>(attr_value));
     } else if (attr_tensor_type == onnx::TensorProto_DataType_INT64) {
       size_t data_size = sizeof(int64_t);
       int64_t attr_value = 0;
       ret = memcpy_s(&attr_value, data_size, tensor_buf.data(), tensor_buf.size());
+      if (EOK != ret) {
+        MS_LOG(ERROR) << "memcpy_s error";
+        return false;
+      }
       prim->set_attr(attr_name, MakeValue<int64_t>(attr_value));
     } else if (attr_tensor_type == onnx::TensorProto_DataType_BOOL) {
       size_t data_size = sizeof(bool);
       bool attr_value = false;
       ret = memcpy_s(&attr_value, data_size, tensor_buf.data(), tensor_buf.size());
+      if (EOK != ret) {
+        MS_LOG(ERROR) << "memcpy_s error";
+        return false;
+      }
       prim->set_attr(attr_name, MakeValue<bool>(attr_value));
     }
   }
@@ -399,7 +416,7 @@ bool AnfImporterFromProtobuf::GetAttrValueForCNode(const PrimitivePtr &prim, con
     return false;
   }
   const std::string &ref_attr_name = attr_proto.ref_attr_name();
-  string type;
+  string type = "";
   std::size_t pos(0);
   if ((pos = ref_attr_name.find("scalar:")) != std::string::npos) {
     type = ref_attr_name.substr(pos, string("scalar:").length() - 1);
@@ -503,7 +520,7 @@ bool AnfImporterFromProtobuf::GetAttrValueForValueNode(const std::string &value_
     return false;
   }
   const std::string &ref_attr_name = attr_proto.ref_attr_name();
-  string type;
+  string type = "";
   std::size_t pos(0);
   if ((pos = ref_attr_name.find("scalar:")) != std::string::npos) {
     type = ref_attr_name.substr(pos, string("scalar:").length() - 1);
@@ -682,9 +699,17 @@ bool AnfImporterFromProtobuf::BuildReturnForFuncGraph(const FuncGraphPtr &output
       const onnx::ValueInfoProto &output_node = importProto.output(out_size);
       const std::string &out_tuple = output_node.name();
       inputs.push_back(anfnode_build_map_[out_tuple]);
+      if (anfnode_build_map_[out_tuple] == nullptr) {
+        MS_LOG(ERROR) << "AnfNode is nullptr";
+        return false;
+      }
       elem.push_back(anfnode_build_map_[out_tuple]->abstract());
     }
     auto maketuple_ptr = outputFuncGraph->NewCNode(inputs);
+    if (maketuple_ptr == nullptr) {
+      MS_LOG(ERROR) << "maketuple_ptr is nullptr";
+      return false;
+    }
     maketuple_ptr->set_abstract(std::make_shared<abstract::AbstractTuple>(elem));
     inputs.clear();
     auto primReturn = std::make_unique<schema::PrimitiveT>();
@@ -857,6 +882,10 @@ int AnfImporterFromProtobuf::Import(const schema::QuantType &quantType) {
     MS_LOG(ERROR) << "Parse configuration info for pb file failed!";
     return status;
   }
+  if (onnx_model_ == nullptr) {
+    MS_LOG(ERROR) << "onnx_model_ is nullptr";
+    return RET_NULL_PTR;
+  }
   const onnx::GraphProto &graphBuild = onnx_model_->graph();
   status = BuildFuncGraph(dstGraph, graphBuild, quantType);
   if (status != RET_OK) {
@@ -871,6 +900,11 @@ int AnfImporterFromProtobuf::Import(const schema::QuantType &quantType) {
 
 onnx::ModelProto *AnfImporterFromProtobuf::ReadOnnxFromBinary(const std::string &model_path) {
   auto onnx_model = new (std::nothrow) onnx::ModelProto;
+  if (onnx_model == nullptr) {
+    MS_LOG(ERROR) << "New onnx ModelProto failed!";
+    ReturnCode::GetSingleReturnCode()->UpdateReturnCode(RET_NULL_PTR);
+    return nullptr;
+  }
   if (RET_OK != ValidateFileStr(model_path, ".mindir")) {
     MS_LOG(ERROR) << "INPUT ILLEGAL: modelFile must be *.mindir";
     ReturnCode::GetSingleReturnCode()->UpdateReturnCode(RET_INPUT_PARAM_INVALID);
diff --git a/mindspore/lite/tools/anf_importer/import_from_protobuf.h b/mindspore/lite/tools/anf_importer/import_from_protobuf.h
index 11f831e66e..b12503e4a1 100644
--- a/mindspore/lite/tools/anf_importer/import_from_protobuf.h
+++ b/mindspore/lite/tools/anf_importer/import_from_protobuf.h
@@ -31,7 +31,7 @@
 namespace mindspore::lite {
 class AnfImporterFromProtobuf : public AnfImporter {
  public:
-  explicit AnfImporterFromProtobuf(onnx::ModelProto *onnx_model, FuncGraphPtr func_graph)
+  AnfImporterFromProtobuf(onnx::ModelProto *onnx_model, FuncGraphPtr func_graph)
       : onnx_model_(onnx_model), func_graph_(std::move(func_graph)) {}
 
   ~AnfImporterFromProtobuf() override = default;
diff --git a/mindspore/lite/tools/optimizer/fusion/constant_folding_fusion.cc b/mindspore/lite/tools/optimizer/fusion/constant_folding_fusion.cc
index 20f6c53ae3..8085f423f3 100644
--- a/mindspore/lite/tools/optimizer/fusion/constant_folding_fusion.cc
+++ b/mindspore/lite/tools/optimizer/fusion/constant_folding_fusion.cc
@@ -203,7 +203,7 @@ const AnfNodePtr ConstFoldPass::Process(const FuncGraphPtr &func_graph, const An
     auto output_nums = GetOutputTensorNum(input_cnode);
     std::vector<Tensor *> output_tensors;
     for (size_t j = 0; j < output_nums; j++) {
-      output_tensors.push_back(new Tensor());
+      output_tensors.push_back(new (std::nothrow) Tensor());
     }
     auto lite_primitive = GetValueNode<std::shared_ptr<PrimitiveC>>(input_cnode->input(0));
     if (lite_primitive == nullptr) {
diff --git a/mindspore/lite/tools/optimizer/fusion/conv_activation_fusion.cc b/mindspore/lite/tools/optimizer/fusion/conv_activation_fusion.cc
index cc1b4e6267..a2aa75ce44 100644
--- a/mindspore/lite/tools/optimizer/fusion/conv_activation_fusion.cc
+++ b/mindspore/lite/tools/optimizer/fusion/conv_activation_fusion.cc
@@ -32,7 +32,6 @@ const BaseRef ConvActivationFusion::DefinePattern() const {
   auto prim = new schema::PrimitiveT();
   prim->value.type = primitive_type;
   auto prim_value = std::make_shared<lite::PrimitiveC>(prim);
-
   return VectorRef({prim_value, conv_var});
 }
 
diff --git a/mindspore/lite/tools/optimizer/fusion/conv_activation_fusion.h b/mindspore/lite/tools/optimizer/fusion/conv_activation_fusion.h
index af7d900bec..ed6417d59b 100644
--- a/mindspore/lite/tools/optimizer/fusion/conv_activation_fusion.h
+++ b/mindspore/lite/tools/optimizer/fusion/conv_activation_fusion.h
@@ -25,9 +25,9 @@ namespace mindspore {
 namespace opt {
 class ConvActivationFusion : public PatternProcessPass {
  public:
-  explicit ConvActivationFusion(bool multigraph = true, const std::string &name = "conv_activation_fusion",
-                                schema::PrimitiveType primitive = schema::PrimitiveType_LeakyReLU,
-                                schema::ActivationType activation = schema::ActivationType_LEAKY_RELU)
+  ConvActivationFusion(bool multigraph = true, const std::string &name = "conv_activation_fusion",
+                       schema::PrimitiveType primitive = schema::PrimitiveType_LeakyReLU,
+                       schema::ActivationType activation = schema::ActivationType_LEAKY_RELU)
       : PatternProcessPass(name, multigraph), primitive_type(primitive), activation_type(activation) {}
   ~ConvActivationFusion() override = default;
   const BaseRef DefinePattern() const override;
diff --git a/mindspore/lite/tools/optimizer/fusion/conv_bn_fusion.cc b/mindspore/lite/tools/optimizer/fusion/conv_bn_fusion.cc
index 6b111d0fb1..444f71a2c0 100644
--- a/mindspore/lite/tools/optimizer/fusion/conv_bn_fusion.cc
+++ b/mindspore/lite/tools/optimizer/fusion/conv_bn_fusion.cc
@@ -57,6 +57,11 @@ void CalTransale(const AnfNodePtr &bn_scale_node, const AnfNodePtr &bn_var_node,
   for (int32_t i = 0; i < kernel_num; i++) {
     float tmp = trans_scale[i] + eps;
     tmp = pow(tmp, POW_NUM);
+    if (tmp <= 0.0f) {
+      MS_LOG(ERROR) << "divisor cannot be 0";
+      lite::ReturnCode::GetSingleReturnCode()->UpdateReturnCode(lite::RET_ERROR);
+      return;
+    }
     trans_scale[i] = 1 / tmp;
   }
   if (bn_scale_node != nullptr) {
diff --git a/mindspore/lite/tools/optimizer/fusion/conv_scale_fusion.cc b/mindspore/lite/tools/optimizer/fusion/conv_scale_fusion.cc
index bb4bd9bd53..3531f5d4e0 100644
--- a/mindspore/lite/tools/optimizer/fusion/conv_scale_fusion.cc
+++ b/mindspore/lite/tools/optimizer/fusion/conv_scale_fusion.cc
@@ -42,7 +42,6 @@ const BaseRef ConvScaleFusion::DefinePattern() const {
   auto bn_var = std::make_shared<CondVar>(IsScaleNode);
   auto weight_var = std::make_shared<CondVar>(IsParamNode);
   auto bias_var = std::make_shared<SeqVar>();
-
   return VectorRef({bn_var, conv_var, weight_var, bias_var});
 }
 const void ConvScaleFusion::InitTransParam(const CNodePtr &scale_node, int kernel_num, float *trans_scale,
diff --git a/mindspore/lite/tools/optimizer/fusion/conv_transform_fusion.cc b/mindspore/lite/tools/optimizer/fusion/conv_transform_fusion.cc
index 208edf15b0..e1eacad970 100644
--- a/mindspore/lite/tools/optimizer/fusion/conv_transform_fusion.cc
+++ b/mindspore/lite/tools/optimizer/fusion/conv_transform_fusion.cc
@@ -86,14 +86,12 @@ const AnfNodePtr ConvTransformFusion::Process(const FuncGraphPtr &func_graph, co
   auto trans_scale = new (std::nothrow) float[kernel_nums];
   if (trans_scale == nullptr) {
     MS_LOG(ERROR) << "tensor_data is nullptr";
-    delete[] trans_scale;
     return nullptr;
   }
   auto trans_bias = new (std::nothrow) float[kernel_nums];
   if (trans_bias == nullptr) {
     MS_LOG(ERROR) << "tensor_data is nullptr";
     delete[] trans_scale;
-    delete[] trans_bias;
     return nullptr;
   }
   GenTransParam(transform_node, kernel_nums, trans_scale, trans_bias);
@@ -179,11 +177,10 @@ const void ConvTransformFusion::GenNewConvTensor(const FuncGraphPtr &func_graph,
   if (kernel_num <= 0) {
     MS_LOG(ERROR) << "kernel num less than 0";
     lite::ReturnCode::GetSingleReturnCode()->UpdateReturnCode(lite::RET_INVALID_OP_ATTR);
+    return;
   }
   auto kernel_size = weight_tensor->tensor_shape_size() / kernel_num;
-
   CalNewWeightTensor(weight_data, kernel_num, kernel_size, trans_scale);
-
   float *bias_data = nullptr;
   // conv has bias,bias_flag true
   bool bias_flag = false;
@@ -196,7 +193,6 @@ const void ConvTransformFusion::GenNewConvTensor(const FuncGraphPtr &func_graph,
     bias_data = new (std::nothrow) float[kernel_num];
     if (bias_data == nullptr) {
       MS_LOG(ERROR) << "tensor_data is nullptr";
-      delete[] bias_data;
       return;
     }
   }
@@ -211,6 +207,10 @@ const void ConvTransformFusion::CalNewWeightTensor(float *weight_data, int kerne
                                                    const float *trans_scale) const {
   MS_ASSERT(weight_data != nullptr);
   auto tmp_weight_data = new (std::nothrow) float[kernel_num * kernel_size];
+  if (tmp_weight_data == nullptr) {
+    lite::ReturnCode::GetSingleReturnCode()->UpdateReturnCode(lite::RET_MEMORY_FAILED);
+    return;
+  }
   MS_ASSERT(new_weight_data != nullptr);
   auto data_size = kernel_num * kernel_size * sizeof(float);
   if (0 != memset_s(tmp_weight_data, data_size, 0, data_size)) {
diff --git a/mindspore/lite/tools/optimizer/fusion/conv_tuple_activation_fusion.cc b/mindspore/lite/tools/optimizer/fusion/conv_tuple_activation_fusion.cc
index d8ed8a6622..bfd9b8b55e 100644
--- a/mindspore/lite/tools/optimizer/fusion/conv_tuple_activation_fusion.cc
+++ b/mindspore/lite/tools/optimizer/fusion/conv_tuple_activation_fusion.cc
@@ -38,7 +38,6 @@ const BaseRef ConvTupleActivationFusion::DefinePattern() const {
   auto act_prim = new schema::PrimitiveT();
   act_prim->value.type = primitive_type;
   auto act_value = std::make_shared<lite::PrimitiveC>(act_prim);
-
   return VectorRef({act_value, tuple_get_item});
 }
 
diff --git a/mindspore/lite/tools/optimizer/fusion/conv_tuple_activation_fusion.h b/mindspore/lite/tools/optimizer/fusion/conv_tuple_activation_fusion.h
index cc9344615a..e89974976f 100644
--- a/mindspore/lite/tools/optimizer/fusion/conv_tuple_activation_fusion.h
+++ b/mindspore/lite/tools/optimizer/fusion/conv_tuple_activation_fusion.h
@@ -25,9 +25,9 @@ namespace mindspore {
 namespace opt {
 class ConvTupleActivationFusion : public PatternProcessPass {
  public:
-  explicit ConvTupleActivationFusion(bool multigraph = true, const std::string &name = "conv_tuple_activation_fusion",
-                                     schema::PrimitiveType primitive = schema::PrimitiveType_LeakyReLU,
-                                     schema::ActivationType activation = schema::ActivationType_LEAKY_RELU)
+  ConvTupleActivationFusion(bool multigraph = true, const std::string &name = "conv_tuple_activation_fusion",
+                            schema::PrimitiveType primitive = schema::PrimitiveType_LeakyReLU,
+                            schema::ActivationType activation = schema::ActivationType_LEAKY_RELU)
       : PatternProcessPass(name, multigraph), primitive_type(primitive), activation_type(activation) {}
   ~ConvTupleActivationFusion() override = default;
   const BaseRef DefinePattern() const override;
diff --git a/mindspore/lite/tools/optimizer/fusion/layer_norm_fusion.h b/mindspore/lite/tools/optimizer/fusion/layer_norm_fusion.h
index d6bf85ecf5..3522f66e5e 100644
--- a/mindspore/lite/tools/optimizer/fusion/layer_norm_fusion.h
+++ b/mindspore/lite/tools/optimizer/fusion/layer_norm_fusion.h
@@ -48,7 +48,6 @@ class LayerNormFusion : public PatternProcessPass {
   VarPtr beta_;
   VarPtr epsilon_;
 };
-
 }  // namespace opt
 }  // namespace mindspore
 
diff --git a/mindspore/lite/tools/optimizer/fusion/pooling_activation_fusion.cc b/mindspore/lite/tools/optimizer/fusion/pooling_activation_fusion.cc
index acd3579ea2..3f03bfffd9 100644
--- a/mindspore/lite/tools/optimizer/fusion/pooling_activation_fusion.cc
+++ b/mindspore/lite/tools/optimizer/fusion/pooling_activation_fusion.cc
@@ -28,14 +28,13 @@ constexpr size_t kActivationInputsLength = 2;
 }
 const BaseRef PoolingActivationFusion::DefinePattern() const {
   auto pooling_var = std::make_shared<CondVar>(IsPoolingNode)();
-  auto prim = new schema::PrimitiveT();
+  auto prim = new (std::nothrow) schema::PrimitiveT();
   if (prim == nullptr) {
     MS_LOG(ERROR) << "new primitiveT failed";
     return nullptr;
   }
   prim->value.type = primitive_type;
   auto prim_value = std::make_shared<lite::PrimitiveC>(prim);
-
   return VectorRef({prim_value, pooling_var});
 }
 
@@ -43,7 +42,6 @@ const AnfNodePtr PoolingActivationFusion::Process(const FuncGraphPtr &func_graph
                                                   const EquivPtr &) const {
   MS_LOG(DEBUG) << "pooling activation pass process:" << schema::EnumNamesPrimitiveType()[primitive_type];
   CheckIfFuncGraphIsNull(func_graph);
-
   CheckIfAnfNodeIsNull(node);
   auto act_node = node->cast<CNodePtr>();
   CheckIfCNodeIsNull(act_node);
diff --git a/mindspore/lite/tools/optimizer/fusion/pooling_activation_fusion.h b/mindspore/lite/tools/optimizer/fusion/pooling_activation_fusion.h
index ae93f0ca3f..7633e0e5aa 100644
--- a/mindspore/lite/tools/optimizer/fusion/pooling_activation_fusion.h
+++ b/mindspore/lite/tools/optimizer/fusion/pooling_activation_fusion.h
@@ -25,9 +25,9 @@ namespace mindspore {
 namespace opt {
 class PoolingActivationFusion : public PatternProcessPass {
  public:
-  explicit PoolingAActivationFusion(bool multigraph = true, const std::string &name = "pooling_activation_fusion",
-                                    schema::PrimitiveType primitive = schema::PrimitiveType_LeakyReLU,
-                                    schema::ActivationType activation = schema::ActivationType_LEAKY_RELU)
+  PoolingAActivationFusion(bool multigraph = true, const std::string &name = "pooling_activation_fusion",
+                           schema::PrimitiveType primitive = schema::PrimitiveType_LeakyReLU,
+                           schema::ActivationType activation = schema::ActivationType_LEAKY_RELU)
       : PatternProcessPass(name, multigraph), primitive_type(primitive), activation_type(activation) {}
   ~PoolingAActivationFusion() override = default;
   const BaseRef DefinePattern() const override;
diff --git a/mindspore/lite/tools/optimizer/graph/clip_convert_activation_pass.cc b/mindspore/lite/tools/optimizer/graph/clip_convert_activation_pass.cc
index 8e3d4edfad..3f76c053ea 100644
--- a/mindspore/lite/tools/optimizer/graph/clip_convert_activation_pass.cc
+++ b/mindspore/lite/tools/optimizer/graph/clip_convert_activation_pass.cc
@@ -75,7 +75,7 @@ bool ClipConvertActivationPass::Run(const FuncGraphPtr &graph) {
     auto primitive = std::make_unique<schema::PrimitiveT>();
     MS_ASSERT(primitive != nullptr);
     primitive->value.type = schema::PrimitiveType_Activation;
-    auto prim2 = new schema::ActivationT;
+    auto prim2 = new (std::nothrow) schema::ActivationT;
     MS_ASSERT(prim2 != nullptr);
     if (min == 0 && max == 6) {
       prim2->type = schema::ActivationType_RELU6;