From 4bc0a6b116fe45aaed0af3ca33950b2e549f553e Mon Sep 17 00:00:00 2001
From: Vladimir Pinchuk <vladimir.pinchuk01@gmail.com>
Date: Thu, 10 Oct 2024 13:08:27 +0300
Subject: [PATCH] etl/type_traits: fix etl::is_base_of for the case when
 TDerived is final

---
 include/etl/type_traits.h | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/include/etl/type_traits.h b/include/etl/type_traits.h
index 47489c2cc..327f164be 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.