From adeb90224188d633a8417adad1eb7716caf79b0b Mon Sep 17 00:00:00 2001
From: rolandreichweinbmw <Roland.Reichwein@bmw.de>
Date: Sat, 4 Jan 2025 14:33:05 +0100
Subject: [PATCH] Fix span fixed extent empty (#1007)

---
 include/etl/span.h              | 2 +-
 test/test_span_fixed_extent.cpp | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/etl/span.h b/include/etl/span.h
index f1077ea7..0cae5e08 100644
--- a/include/etl/span.h
+++ b/include/etl/span.h
@@ -238,7 +238,7 @@ namespace etl
     //*************************************************************************
     ETL_NODISCARD ETL_CONSTEXPR bool empty() const ETL_NOEXCEPT
     {
-      return false;
+      return Extent == 0;
     }
 
     //*************************************************************************
diff --git a/test/test_span_fixed_extent.cpp b/test/test_span_fixed_extent.cpp
index 157170a0..5a067620 100644
--- a/test/test_span_fixed_extent.cpp
+++ b/test/test_span_fixed_extent.cpp
@@ -52,6 +52,7 @@ namespace
     typedef etl::span<int, 10U> View;
     typedef etl::span<int, 9U> SView;
     typedef etl::span<const int, 10U> CView;
+    typedef etl::span<int, 0U> EView;
 
 #if ETL_USING_CPP20
     using StdView = std::span<int, 10U>;
@@ -464,6 +465,9 @@ namespace
     {
       View view1(etldata.begin(), etldata.begin());
       CHECK(!view1.empty());
+
+      EView view2(etldata.begin(), etldata.begin());
+      CHECK(view2.empty());
     }
 
     //*************************************************************************