1 files changed, 46 insertions, 0 deletions
diff --git a/sources/pyside6/tests/QtWidgets/bug_836.py b/sources/pyside6/tests/QtWidgets/bug_836.py
new file mode 100644
index 000000000..c2d3d5609
--- /dev/null
+++ b/sources/pyside6/tests/QtWidgets/bug_836.py
@@ -0,0 +1,46 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+import os
+import sys
+
+from pathlib import Path
+sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
+sys.path.append(os.fspath(Path(__file__).resolve().parents[1] / "util"))
+from init_paths import init_test_paths
+init_test_paths()
+
+from PySide6.QtCore import QTimer
+from PySide6.QtWidgets import QApplication, QFrame
+
+
+class Mixin1(object):
+    pass
+
+
+class Mixin2(object):
+    pass
+
+
+class Mixin3(object):
+    pass
+
+
+class MainWindow(Mixin1, Mixin2, Mixin3, QFrame):
+    def __init__(self):
+        super().__init__()
+
+
+def main():
+    app = QApplication([])
+    # if it doesn't crash it should pass
+    w = MainWindow()
+    w.show()
+    QTimer.singleShot(0, w.close)
+    app.exec()
+
+
+if __name__ == "__main__":
+    main()
+
+