From 2ae56ca84f250fdc0d497815b0111b3933eadbd1 Mon Sep 17 00:00:00 2001
From: Xiaoguang Sun <sunxiaoguang@users.noreply.github.com>
Date: Thu, 8 Jun 2017 01:03:42 +0800
Subject: [PATCH] Use int32_t explicitly when serializing version (#2389)

Use int32_t explicitly when serializing version field of dmatrix in binary
format. On ILP64 architectures, although very little, size of int is 64 bits.
---
 src/data/data.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/data/data.cc b/src/data/data.cc
index b8dd1e764..7a092f459 100644
--- a/src/data/data.cc
+++ b/src/data/data.cc
@@ -33,7 +33,7 @@ void MetaInfo::Clear() {
 }
 
 void MetaInfo::SaveBinary(dmlc::Stream *fo) const {
-  int version = kVersion;
+  int32_t version = kVersion;
   fo->Write(&version, sizeof(version));
   fo->Write(&num_row, sizeof(num_row));
   fo->Write(&num_col, sizeof(num_col));