[JVM Packages] Catch dmlc error by ref. (#5678)

2020-05-19 13:00:12 +08:00
parent 83981a9ce3
commit dd9aeb60ae
1 changed files with 1 additions and 1 deletions
--- a/jvm-packages/xgboost4j/src/native/xgboost4j.cpp
+++ b/jvm-packages/xgboost4j/src/native/xgboost4j.cpp
@@ -151,7 +151,7 @@ XGB_EXTERN_C int XGBoost4jCallbackDataIterNext(
      global_jvm->DetachCurrentThread();
    }
    return ret_value;
-  } catch(dmlc::Error e) {
+  } catch(dmlc::Error const& e) {
    // only detach if it is a async call.
    if (jni_status == JNI_EDETACHED) {
      global_jvm->DetachCurrentThread();