diff --git a/paddle/pir/src/core/op_operand.cc b/paddle/pir/src/core/op_operand.cc
index d08b08af5f8138..5c27cd4943ca6a 100644
--- a/paddle/pir/src/core/op_operand.cc
+++ b/paddle/pir/src/core/op_operand.cc
@@ -27,6 +27,9 @@
 
 namespace pir {
 OpOperand &OpOperand::operator=(const OpOperand &rhs) {  // NOLINT
+  if (this == &rhs) {
+    return *this;
+  }
   impl_ = rhs.impl_;
   return *this;
 }
diff --git a/paddle/testing/paddle_gtest_main.cc b/paddle/testing/paddle_gtest_main.cc
index 6e2d05564077a4..03de6b055fe7e3 100644
--- a/paddle/testing/paddle_gtest_main.cc
+++ b/paddle/testing/paddle_gtest_main.cc
@@ -60,7 +60,7 @@ int main(int argc, char** argv) {  // NOLINT
   }
 
 #if defined(PADDLE_WITH_CUDA) || defined(PADDLE_WITH_HIP)
-  if (strstr(env_str, "enable_gpu_memory_usage_log")) {
+  if (strstr(env_str, "enable_gpu_memory_usage_log")) {  // NOLINT
     VLOG(1) << "Set FLAGS_enable_gpu_memory_usage_log to true";
     FLAGS_enable_gpu_memory_usage_log = true;
   }