I could reproduce the error. It was not because of the above quoted code (which looks correct to me), but because the flags indicating whether there is a reference to the nodes were not set correctly. It should be fixed in branch lp:~zorba-coders/zorba/bug-1111487. I am adding you as a reviewer. Can you confirm?
I could reproduce the error. It was not because of the above quoted code (which looks correct to me), but because the flags indicating whether there is a reference to the nodes were not set correctly. It should be fixed in branch lp:~zorba-coders/zorba/bug-1111487. I am adding you as a reviewer. Can you confirm?