Fix Google test warnings and error (#2957)

2017-12-20 00:13:56 +13:00
parent 76f8f51438
commit 7759ab99ee
3 changed files with 10 additions and 4 deletions
--- a/include/xgboost/base.h
+++ b/include/xgboost/base.h
@@ -9,6 +9,7 @@
 #include <dmlc/base.h>
 #include <dmlc/omp.h>
 #include <cmath>
+#include <iostream>

 /*!
 * \brief string flag for R library, to leave hooks when needed.