From d22921e1482e726cfe5dcebf82b29aa96db96183 Mon Sep 17 00:00:00 2001
From: John Muehlhausen <jgm@jgm.org>
Date: Mon, 15 Jan 2018 19:34:36 -0600
Subject: [PATCH] add Base to allow is_base_of to mimic is_enum

---
 enum.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/enum.h b/enum.h
index ab5ea18..39264fe 100644
--- a/enum.h
+++ b/enum.h
@@ -485,6 +485,8 @@ struct _initialize_at_program_start {
     _initialize_at_program_start() { Enum::initialize(); }
 };
 
+struct Base {};
+
 } // namespace better_enums
 
 
@@ -588,7 +590,7 @@ BETTER_ENUMS_ID(GenerateSwitchType(Underlying, __VA_ARGS__))                   \
                                                                                \
 }                                                                              \
                                                                                \
-class Enum {                                                                   \
+class Enum : better_enums::Base {                                                                   \
   private:                                                                     \
     typedef ::better_enums::optional<Enum>                  _optional;         \
     typedef ::better_enums::optional<std::size_t>           _optional_index;   \