fix warnings

include/LightGBM/train_share_states.h

@@ -162,7 +162,7 @@ struct TrainingShareStates {
     multi_val_bin_wrapper_.reset(nullptr);
   }
 
-  uint64_t num_hist_total_bin() { return num_hist_total_bin_; }
+  int num_hist_total_bin() { return num_hist_total_bin_; }
 
   const std::vector<uint32_t>& feature_hist_offsets() { return feature_hist_offsets_; }
 
@@ -215,7 +215,7 @@ struct TrainingShareStates {
 
  private:
   std::vector<uint32_t> feature_hist_offsets_;
-  uint64_t num_hist_total_bin_ = 0;
+  int num_hist_total_bin_ = 0;
   std::unique_ptr<MultiValBinWrapper> multi_val_bin_wrapper_;
   std::vector<hist_t, Common::AlignmentAllocator<hist_t, kAlignedSize>> hist_buf_;
   int num_total_bin_ = 0;

src/io/train_share_states.cpp

@@ -245,10 +245,10 @@ void MultiValBinWrapper::CopyMultiValBinSubset(
 }
 
 void TrainingShareStates::CalcBinOffsets(const std::vector<std::unique_ptr<FeatureGroup>>& feature_groups,
-  std::vector<uint32_t>* offsets, bool is_col_wise) {
+  std::vector<uint32_t>* offsets, bool in_is_col_wise) {
   offsets->clear();
   feature_hist_offsets_.clear();
-  if (is_col_wise) {
+  if (in_is_col_wise) {
     uint32_t cur_num_bin = 0;
     uint32_t hist_cur_num_bin = 0;
     for (int group = 0; group < static_cast<int>(feature_groups.size()); ++group) {
@@ -297,7 +297,7 @@ void TrainingShareStates::CalcBinOffsets(const std::vector<std::unique_ptr<Featu
       }
     }
     feature_hist_offsets_.push_back(hist_cur_num_bin);
-    num_hist_total_bin_ = static_cast<uint64_t>(feature_hist_offsets_.back());
+    num_hist_total_bin_ = static_cast<int>(feature_hist_offsets_.back());
   } else {
     double sum_dense_ratio = 0.0f;
     int ncol = 0;
@@ -376,7 +376,7 @@ void TrainingShareStates::CalcBinOffsets(const std::vector<std::unique_ptr<Featu
       offsets->push_back(cur_num_bin);
       feature_hist_offsets_.push_back(hist_cur_num_bin);
     }
-    num_hist_total_bin_ = static_cast<uint64_t>(feature_hist_offsets_.back());
+    num_hist_total_bin_ = static_cast<int>(feature_hist_offsets_.back());
   }
 }