From 793039017ef89bf60cecdafb8eff5c681b38ff3b Mon Sep 17 00:00:00 2001
From: fis <jm.yuan@outlook.com>
Date: Fri, 25 Sep 2020 16:49:44 +0800
Subject: [PATCH] Initialization.

---
 src/tree/updater_gpu_hist.cu    | 2 +-
 tests/cpp/tree/test_gpu_hist.cu | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/tree/updater_gpu_hist.cu b/src/tree/updater_gpu_hist.cu
index 8d0efd41872e..394dfd5d5c1a 100644
--- a/src/tree/updater_gpu_hist.cu
+++ b/src/tree/updater_gpu_hist.cu
@@ -602,7 +602,7 @@ struct GPUHistMakerDevice {
     auto is_cat = candidate.split.is_cat;
     if (is_cat) {
       auto cat = common::AsCat(candidate.split.fvalue);
-      std::vector<uint32_t> split_cats(LBitField32::ComputeStorageSize(std::max(cat+1, 1)));
+      std::vector<uint32_t> split_cats(LBitField32::ComputeStorageSize(std::max(cat+1, 1)), 0);
       LBitField32 cats_bits(split_cats);
       cats_bits.Set(cat);
       dh::CopyToD(split_cats, &node_categories);
diff --git a/tests/cpp/tree/test_gpu_hist.cu b/tests/cpp/tree/test_gpu_hist.cu
index 4a96cb2877a3..37f738c24ae7 100644
--- a/tests/cpp/tree/test_gpu_hist.cu
+++ b/tests/cpp/tree/test_gpu_hist.cu
@@ -133,6 +133,7 @@ TEST(GpuHist, BuildHistSharedMem) {
 TEST(GpuHist, ApplySplit) {
   RegTree tree;
   ExpandEntry candidate;
+  candidate.nid = 0;
   candidate.left_weight = 1.0f;
   candidate.right_weight = 2.0f;
   candidate.base_weight = 3.0f;