From 509e0a9811f789acbff8a6843a3f6b9d9e0e7ef6 Mon Sep 17 00:00:00 2001
From: Damien Elmes <gpg@ankiweb.net>
Date: Sat, 3 Dec 2022 19:33:51 +1000
Subject: [PATCH] Try to address crashes on shutdown

I was able to reproduce the crashes fairly reliably by opening the
prefs screen on startup and shutting down the app after 600ms; after
this change the crashes no longer seem to occur.
---
 qt/aqt/main.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/qt/aqt/main.py b/qt/aqt/main.py
index 976471d9c..579c75cf4 100644
--- a/qt/aqt/main.py
+++ b/qt/aqt/main.py
@@ -519,7 +519,16 @@ class AnkiQt(QMainWindow):
         self.mediaServer.shutdown()
         # Rust background jobs are not awaited implicitly
         self.backend.await_backup_completion()
-        self.app.exit(0)
+        self.deleteLater()
+        app = self.app
+
+        def exit():
+            # try to ensure Qt objects are deleted in a logical order,
+            # to prevent crashes on shutdown
+            gc.collect()
+            app.exit(0)
+
+        self.progress.single_shot(100, exit, False)
 
     # Sound/video
     ##########################################################################