Dict creation in recursive function cause interpreter crashes. #87353

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1. CharlesFengY commented on Feb 10, 2021

   

   CharlesFengYmannequin

   on Feb 10, 2021

   MannequinAuthor

   More actions

   In the following programs, dict is created in recursive calls. Then a core dump is reported by Python interpreter.
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   def test_equal_operator_modifying_operand():

       class X():
   
           def __del__(DictTest):
               dict_b.clear()
   
           def __eq__(DictTest, other):
               dict_a.clear()
               return True
   
           def __hash__(DictTest):
               return 13
       dict_d = {X(): 0}
   
       class Y():
   
           def __eq__(DictTest, other):
               dict_d.clear()
               return True
       dict_d = {0: Y()}
       # dict_c = {0: set()}
       test_equal_operator_modifying_operand()
   
   test_equal_operator_modifying_operand()
   +++++++++++++++++++++++++++++++++++++++++
2. CharlesFengY

   added

   3.9 (EOL)end of lifeend of life

   interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

   type-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump

   on Feb 10, 2021
3. iritkatriel commented on Sep 7, 2021

   

   iritkatriel

   on Sep 7, 2021

   Member

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   On 3.9 I reproduce the segfault.

   On 3.11 on a mac I get

   RecursionError: maximum recursion depth exceeded while calling a Python object

   So it has been fixed in the meantime.
4. iritkatriel

   closed this as completedon Sep 7, 2021
5. iritkatriel

   closed this as completedon Sep 7, 2021
6. ezio-melotti

   transferred this issue fromon Apr 10, 2022