From c233d10a0c0c634bc2411b039612367472ae1cf4 Mon Sep 17 00:00:00 2001
From: Thorsten Hater <24411438+thorstenhater@users.noreply.github.com>
Date: Tue, 24 Sep 2024 10:38:50 +0200
Subject: [PATCH] Fix regression.

---
 arbor/include/arbor/util/expected.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arbor/include/arbor/util/expected.hpp b/arbor/include/arbor/util/expected.hpp
index 9d860f6536..1af88eb42f 100644
--- a/arbor/include/arbor/util/expected.hpp
+++ b/arbor/include/arbor/util/expected.hpp
@@ -486,7 +486,7 @@ struct expected<void, E> {
     // Swap ops.
 
     void swap(expected& other) {
-        data_.swap(other.data);
+        data_.swap(other.data_);
     }
 
     // Accessors.