From 9e11ef4f39e53277be03384fc3f51b6b50ddd08e Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Thu, 7 Jul 2022 16:04:56 +0200
Subject: [PATCH] MixerScene: handle edge-case with midi-cc/bender
 controllables

---
 libs/pbd/controllable.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/libs/pbd/controllable.cc b/libs/pbd/controllable.cc
index 43c385349c..4cdd134559 100644
--- a/libs/pbd/controllable.cc
+++ b/libs/pbd/controllable.cc
@@ -151,7 +151,12 @@ Controllable::registered_controllables ()
 	ControllableSet rv;
 	Glib::Threads::RWLock::ReaderLock lm (registry_lock);
 	for (auto const& i : registry) {
-		rv.insert (i->shared_from_this ());
+		try {
+			rv.insert (i->shared_from_this ());
+		} catch (...) {
+			/* ignore boost::bad_weak_ptr */
+			// cout << "No shared ctrl: " << i->name() << "\n";
+		}
 	}
 	return rv;
 }