flang: include limits

diff --git a/flang/runtime/unit.cpp b/flang/runtime/unit.cpp
index 5a256c2..79f3722 100644 (file)
--- a/flang/runtime/unit.cpp
+++ b/flang/runtime/unit.cpp
@@ -12,6 +12,7 @@
 #include "lock.h"
 #include "unit-map.h"
 #include <cstdio>
+#include <limits>
 #include <utility>
 
 namespace Fortran::runtime::io {