From da446af3b73a9b7354b89bb5792968cd705359d8 Mon Sep 17 00:00:00 2001
From: ggardet <guillaume.gardet@opensuse.org>
Date: Mon, 25 Jan 2021 18:34:05 +0100
Subject: [PATCH] Fix warning showed with GCC10 (#7336)

catching polymorphic type 'struct dmlc::Error' by value
---
 tests/cpp/ir_functor_test.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/cpp/ir_functor_test.cc b/tests/cpp/ir_functor_test.cc
index 9be83987ba57..d242b20f1ba7 100644
--- a/tests/cpp/ir_functor_test.cc
+++ b/tests/cpp/ir_functor_test.cc
@@ -72,7 +72,7 @@ TEST(IRF, ExprTransform) {
   try {
     f(z - 1, 2);
     LOG(FATAL) << "should fail";
-  } catch (dmlc::Error) {
+  } catch (dmlc::Error&) {
   }
 }