From ca4c37528f460a5dff309381c55aca4527acbc9a Mon Sep 17 00:00:00 2001
From: Leonardo de Moura <leonardo@microsoft.com>
Date: Mon, 12 Aug 2013 14:50:48 -0700
Subject: [PATCH] Fix cygwin compilation error

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
---
 src/tests/util/thread.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/tests/util/thread.cpp b/src/tests/util/thread.cpp
index 7373a7570e..8fe2ac9cf7 100644
--- a/src/tests/util/thread.cpp
+++ b/src/tests/util/thread.cpp
@@ -4,6 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 
 Author: Leonardo de Moura
 */
+#include <cstdlib>
 #include <thread>
 #include <iostream>
 #include <mutex>