From bce35c49276564bf371ececb4d0a9c54e8f13b20 Mon Sep 17 00:00:00 2001
From: John Wellbelove <github@wellbelove.co.uk>
Date: Sun, 10 Nov 2024 10:33:19 +0000
Subject: [PATCH] Simplified definition of is_base_of

---
 include/etl/generators/type_traits_generator.h | 9 ++-------
 include/etl/type_traits.h                      | 9 ++-------
 2 files changed, 4 insertions(+), 14 deletions(-)

diff --git a/include/etl/generators/type_traits_generator.h b/include/etl/generators/type_traits_generator.h
index f086b841..9e414080 100644
--- a/include/etl/generators/type_traits_generator.h
+++ b/include/etl/generators/type_traits_generator.h
@@ -639,18 +639,13 @@ namespace etl
   struct is_base_of
   {
   private:
-
-    template<typename T> struct dummy {};
-    struct internal: TDerived, dummy<int>{};
-
     static TBase* check(TBase*) { return (TBase*)0; }
 
-    template<typename T>
-    static char check(dummy<T>*) { return 0; }
+    static char check(...) { return 0; }
 
   public:
 
-    static const bool value = (sizeof(check((internal*)0)) == sizeof(TBase*));
+    static const bool value = (sizeof(check((TDerived*)0)) == sizeof(TBase*));
   };
 
   // For when TBase or TDerived is a fundamental type.
diff --git a/include/etl/type_traits.h b/include/etl/type_traits.h
index 47489c2c..327f164b 100644
--- a/include/etl/type_traits.h
+++ b/include/etl/type_traits.h
@@ -627,18 +627,13 @@ namespace etl
   struct is_base_of
   {
   private:
-
-    template<typename T> struct dummy {};
-    struct internal: TDerived, dummy<int>{};
-
     static TBase* check(TBase*) { return (TBase*)0; }
 
-    template<typename T>
-    static char check(dummy<T>*) { return 0; }
+    static char check(...) { return 0; }
 
   public:
 
-    static const bool value = (sizeof(check((internal*)0)) == sizeof(TBase*));
+    static const bool value = (sizeof(check((TDerived*)0)) == sizeof(TBase*));
   };
 
   // For when TBase or TDerived is a fundamental type.