Add missing include.

diff --git a/tests/examples/example_test.h b/tests/examples/example_test.h
index 78e00a3792d0cb05ad8a78565c4879ac5a000456..9241f45307232f5d8ae20a525f7f3bfb77c8da81 100644 (file)
--- a/tests/examples/example_test.h
+++ b/tests/examples/example_test.h
@@ -24,6 +24,7 @@
 #include <deal.II/base/exceptions.h>
 
 #include <fstream>
+#include <iostream>
 
 /*
  * Given the name of a file, copy it to std::cout