From a07ba74c9d2ef77ff9737810f58f3521c380b5e5 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Fri, 8 Aug 2025 14:33:26 -0600
Subject: [PATCH] fix constness in relationship to EditingContext:: local tempo
 map

---
 gtk2_ardour/editing_context.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gtk2_ardour/editing_context.h b/gtk2_ardour/editing_context.h
index a59bfeb677..30028dcc68 100644
--- a/gtk2_ardour/editing_context.h
+++ b/gtk2_ardour/editing_context.h
@@ -833,8 +833,8 @@ class EditingContext : public ARDOUR::SessionHandlePtr, public AxisViewProvider,
 	bool temporary_zoom_focus_change;
 	bool _dragging_playhead;
 
-	std::shared_ptr<Temporal::TempoMap> _local_tempo_map;
-	void ensure_local_tempo_scope () {
+	mutable std::shared_ptr<Temporal::TempoMap> _local_tempo_map;
+	void ensure_local_tempo_scope () const {
 		if (_local_tempo_map) {
 			Temporal::TempoMap::set (_local_tempo_map);
 			_local_tempo_map.reset ();