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  1. Qt for Python
  2. PYSIDE-286

Segfault after reassignment of class attributes

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P2: Important
    • Resolution: Fixed
    • Affects Version/s: 1.2.2, dev
    • Fix Version/s: 5.11.1
    • Component/s: PySide, Shiboken
    • Labels:
    • Environment:
      Debian testing, amd64, python3

      Description

      After reassigning a local attribute, that attribute seems to be deleted, which may lead to segfaults. Please see the following minimal example:

      #!/usr/bin/env python3
      
      from PySide.QtCore import QObject
      
      def modify(klass):
          klass.my_list = [3.14] + klass.my_list
          return klass
      
      #@modify
      class A(QObject):
          my_list = ["a"]
      
      print(A().my_list)
      
      AA = modify(A)
      
      print(A().my_list)
      print(AA().my_list)
      

      For me, the output is:

      $ ./pyside_test.py 
      ['a']
      [<NULL>]
      Segmentation fault
      

      At least the [<NULL>] result also appears for this modification of A:

      A.my_list = [3.14] + A.my_list
      

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          Activity

            People

            Assignee:
            crmaurei Cristian Maureira-Fredes
            Reporter:
            dh_ds Daniel Hornung
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              Dates

              Created:
              Updated:
              Resolved:

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