1 files changed, 2 insertions, 1 deletions
diff --git a/src/libutil/util.hh b/src/libutil/util.hh
index d947c34252a7..104e3f2651b4 100644
--- a/src/libutil/util.hh
+++ b/src/libutil/util.hh
@@ -179,9 +179,10 @@ class AutoCloseFD
 public:
     AutoCloseFD();
     AutoCloseFD(int fd);
+    AutoCloseFD(const AutoCloseFD & fd);
     ~AutoCloseFD();
     void operator =(int fd);
-    operator int();
+    operator int() const;
     void close();
     bool isOpen();
     int borrow();