From c3e1f0aeeab90df9e85df5c81476fc9bdfd90d24 Mon Sep 17 00:00:00 2001
From: Timothy Kelley <tkelley@lanl.gov>
Date: Mon, 10 Jun 2019 13:57:18 -0600
Subject: [PATCH] Include <tuple>.

---
 src/c4/QueryEnv.hh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/c4/QueryEnv.hh b/src/c4/QueryEnv.hh
index a4d6360e01..7a213d5d05 100644
--- a/src/c4/QueryEnv.hh
+++ b/src/c4/QueryEnv.hh
@@ -15,6 +15,7 @@
 #include <iostream>
 #include <sstream>
 #include <string>
+#include <tuple>
 #include <type_traits>
 #include <utility> // pair