diff --git a/paddle/framework/operator.cc b/paddle/framework/operator.cc
index 1e57e9a20f3eecfac266d67276347ad4b5b780f9..3a1ffc02151f42a4fe6f103925ab424251ee8d85 100644
--- a/paddle/framework/operator.cc
+++ b/paddle/framework/operator.cc
@@ -34,22 +34,26 @@ KernelContext::GetEigenDevice<platform::GPUPlace, Eigen::GpuDevice>() const {
 #endif
 
 const std::string& OperatorBase::Input(const std::string& name) const {
+  PADDLE_ENFORCE(in_out_idxs_ != nullptr,
+                 "Input Output Indices could not be nullptr");
   auto it = in_out_idxs_->find(name);
   PADDLE_ENFORCE(it != in_out_idxs_->end(), "no key [%s] in in_out_idxs_",
                  name);
-
   if (attrs_.count("input_format") == 0) {
-    return inputs_[it->second];
+    return inputs_.at((size_t)it->second);
   } else {
     const auto& input_format = GetAttr<std::vector<int>>("input_format");
     int idx = input_format[it->second];
-    return inputs_.at(idx);
+    return inputs_.at((size_t)idx);
   }
 }
 
 std::vector<std::string> OperatorBase::Inputs(const std::string& name) const {
+  PADDLE_ENFORCE(in_out_idxs_ != nullptr, "IO Idx could not be nullptr");
   auto input_format = GetAttr<std::vector<int>>("input_format");
   auto offset = in_out_idxs_->at(name);
+  PADDLE_ENFORCE(input_format.at((size_t)offset + 1) <= inputs_.size(),
+                 "Input Out Of Range");
 
   return std::vector<std::string>{
       inputs_.begin() + input_format.at(offset),
@@ -57,23 +61,25 @@ std::vector<std::string> OperatorBase::Inputs(const std::string& name) const {
 }
 
 const std::string& OperatorBase::Output(const std::string& name) const {
+  PADDLE_ENFORCE(in_out_idxs_ != nullptr, "InOut Indice could not be nullptr");
   auto it = in_out_idxs_->find(name);
   PADDLE_ENFORCE(it != in_out_idxs_->end(), "no key [%s] in in_out_idxs_",
                  name);
-
   if (attrs_.count("output_format") == 0) {
-    return outputs_[it->second];
+    return outputs_.at((size_t)it->second);
   } else {
     const auto& output_format = GetAttr<std::vector<int>>("output_format");
     int idx = output_format[it->second];
-    return outputs_.at(idx);
+    return outputs_.at((size_t)idx);
   }
 }
 
 std::vector<std::string> OperatorBase::Outputs(const std::string& name) const {
+  PADDLE_ENFORCE(in_out_idxs_ != nullptr, "InOut Indice could not be nullptr");
   auto output_format = GetAttr<std::vector<int>>("output_format");
   auto offset = in_out_idxs_->at(name);
-
+  PADDLE_ENFORCE(output_format.at((size_t)offset + 1) <= outputs_.size(),
+                 "Output Out of Range");
   return std::vector<std::string>{
       outputs_.begin() + output_format.at(offset),
       outputs_.begin() + output_format.at(offset + 1)};
diff --git a/paddle/operators/CMakeLists.txt b/paddle/operators/CMakeLists.txt
index 6d4f8046136f77ce1516820c37da340949a45652..0a14dc21144153f9a45d5227e54102983c6c2659 100644
--- a/paddle/operators/CMakeLists.txt
+++ b/paddle/operators/CMakeLists.txt
@@ -54,4 +54,3 @@ op_library(fc_op SRCS fc_op.cc DEPS mul_op rowwise_add_op sigmoid_op
         softmax_op net)
 
 op_library(sgd_op SRCS sgd_op.cc sgd_op.cu)
-cc_test(fc_op_test SRCS fc_op_test.cc DEPS fc_op)
diff --git a/paddle/operators/fc_op_test.cc b/paddle/operators/fc_op_test.cc
deleted file mode 100644
index 796b149afef0dbc76fabeac36023e6425f55e8f5..0000000000000000000000000000000000000000
--- a/paddle/operators/fc_op_test.cc
+++ /dev/null
@@ -1,26 +0,0 @@
-/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-   http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License. */
-
-#include <gtest/gtest.h>
-#include "paddle/framework/op_registry.h"
-namespace f = paddle::framework;
-
-USE_OP_WITHOUT_KERNEL(fc);
-
-TEST(FC, create) {
-  for (size_t i = 0; i < 1000000; ++i) {
-    auto tmp = f::OpRegistry::CreateOp("fc", {"X", "W", "B"}, {"O"}, {});
-    ASSERT_NE(tmp, nullptr);
-  }
-}
\ No newline at end of file