Import string: Needed for clang compilation.

diff --git a/ext/json11/json11.cpp b/ext/json11/json11.cpp
index c08698898739eb1021b9fea4ed17939e93028802..f48833b1b8a5e002852264941c5102820c5c4bb7 100644 (file)
--- a/ext/json11/json11.cpp
+++ b/ext/json11/json11.cpp
@@ -25,6 +25,7 @@
 #include <cstdlib>
 #include <cstdio>
 #include <limits>
+#include <string>
 
 namespace json11 {