From 7ee4f116f2002bbeb1261d625c9fedfb4060410c Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Sat, 6 Aug 2022 22:09:22 +0200
Subject: [PATCH] Fix crash when load session w/o engine

1. Start Ardour, load a session.
2. Stop the engine
3. Session > Recent, pick a recent session
4. Engine dialog opens
5. Close engine dialog without starting the engine
6. Profit^WCrash
---
 libs/ardour/session.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/libs/ardour/session.cc b/libs/ardour/session.cc
index 94786b4d0e..82d07c6be1 100644
--- a/libs/ardour/session.cc
+++ b/libs/ardour/session.cc
@@ -362,7 +362,12 @@ Session::Session (AudioEngine &eng,
 
 	setup_lua ();
 
-	assert (AudioEngine::instance()->running());
+	/* The engine sould be running at this point */
+	if (!AudioEngine::instance()->running()) {
+		destroy ();
+		throw SessionException (_("Session initialization failed because Audio/MIDI engine is not running."));
+	}
+
 	immediately_post_engine ();
 
 	bool need_template_resave = false;