(fix) unused variable

Author: Karsten1987

rclcpp/test/test_externally_defined_services.cpp

@@ -48,7 +48,7 @@ TEST_F(TestExternallyDefinedServices, default_behavior) {
     auto srv = node_handle->create_service<rclcpp::srv::Mock>("test",
         callback);
     EXPECT_STREQ(srv->get_service_name().c_str(), "test");
-  } catch (const std::exception & e) {
+  } catch (const std::exception &) {
     FAIL();
     return;
   }
@@ -69,7 +69,7 @@ TEST_F(TestExternallyDefinedServices, extern_defined_uninitialized) {
   try {
     rclcpp::service::Service<rclcpp::srv::Mock>(node_handle->get_shared_node_handle(),
       &service_handle, cb);
-  } catch (const std::runtime_error & e) {
+  } catch (const std::runtime_error &) {
     SUCCEED();
     return;
   }
@@ -97,7 +97,7 @@ TEST_F(TestExternallyDefinedServices, extern_defined_initialized) {
   try {
     rclcpp::service::Service<rclcpp::srv::Mock>(node_handle->get_shared_node_handle(),
       &service_handle, cb);
-  } catch (const std::runtime_error & e) {
+  } catch (const std::runtime_error &) {
     FAIL();
     return;
   }

rclcpp_lifecycle/src/lifecycle_node_impl.hpp

@@ -204,6 +204,7 @@ class LifecycleNode::LifecycleNodeImpl
       } catch (const std::exception & e) {
         fprintf(stderr, "Caught exception in callback for transition %d\n",
           it->first);
+        fprintf(stderr, "Original error msg: %s\n", e.what());
         cb_success = false;
       }
     } else {