Avoid double dealloc

tminka · tminka · commit de7e1ac77654 · 2020-12-17T19:06:41.000Z
diff --git a/src/runtime/classderived.cs b/src/runtime/classderived.cs
@@ -67,6 +67,12 @@ internal ClassDerivedObject(Type tp) : base(tp)
         {
             var self = (CLRObject)GetManagedObject(ob);
 
+            if (self.tpHandle == IntPtr.Zero)
+            {
+                ClassBase.tp_dealloc(ob);
+                return;
+            }
+
             // don't let the python GC destroy this object
             Runtime.PyObject_GC_UnTrack(self.pyHandle);
 
