1 files changed, 73 insertions, 0 deletions
diff --git a/tests/signals/segfault_proxyparent_test.py b/tests/signals/segfault_proxyparent_test.py
new file mode 100644
index 000000000..2b41f67c4
--- /dev/null
+++ b/tests/signals/segfault_proxyparent_test.py
@@ -0,0 +1,73 @@
+
+import unittest
+
+from PySide.QtCore import QObject, SIGNAL
+
+# Description of the problem
+# After creating an PyObject that inherits from QObject, connecting it,
+# deleting it and later creating another Python QObject-based object, this
+# new object will point to the same memory position as the first one.
+
+# Somehow the underlying QObject also points to the same position.
+
+# In PyQt4, the connection works fine with the same memory behavior,
+# so it looks like specific to SIP.
+
+class Dummy(QObject):
+    def __init__(self, parent=None):
+        QObject.__init__(self, parent)
+
+class Joe(QObject):
+    def __init__(self, parent=None):
+        QObject.__init__(self, parent)
+
+class SegfaultCase(unittest.TestCase):
+    """Test case for the segfault happening when parent() is called inside
+    ProxyObject"""
+
+    def setUp(self):
+        self.called = False
+
+    def tearDown(self):
+        try:
+            del self.args
+        except:
+            pass
+
+    def callback(self, *args):
+        if tuple(self.args) == args:
+            self.called = True
+
+    def testSegfault(self):
+        """Regression: Segfault for qobjects in the same memory position."""
+        obj = Dummy()
+        QObject.connect(obj, SIGNAL('bar(int)'), self.callback)
+        self.args = (33,)
+        obj.emit(SIGNAL('bar(int)'), self.args[0])
+        self.assert_(self.called)
+        del obj
+
+        obj = Joe()
+        QObject.connect(obj, SIGNAL('bar(int)'), self.callback)
+        self.args = (33,)
+        obj.emit(SIGNAL('bar(int)'), self.args[0])
+        self.assert_(self.called)
+
+
+    def testSameReference(self):
+        """Example of how sip(?) reuses memory positions"""
+        obj = Dummy()
+        s1 = str(obj)
+        del obj
+        obj = Dummy()
+        s2 = str(obj)
+        self.assertEqual(s1, s2)
+
+        obj2 = Dummy()
+        s3 = str(obj2)
+        self.assertNotEqual(s2, s3)
+
+
+if __name__ == '__main__':
+    unittest.main()
+