test: more headers

diff --git a/test.cc b/test.cc
index 9805b7588286a6a42f9d2b3e0511c0e3b600249b..28bb24f9d5db56881eb0ca226f5ccd4f610cb58b 100644 (file)
--- a/test.cc
+++ b/test.cc
@@ -20,6 +20,7 @@
 #include <set>
 #include <sstream>
 #include <string>
+#include <string_view>
 #include <tuple>
 #include <utility>
 #include <vector>