[BUG]: numba-cuda errors related to ObjectCode pickling #1671

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1. Andy-Jost

   added this to the cuda.core v0.7.0 milestone on Feb 20, 2026
2. Andy-Jost

   added

   bugSomething isn't workingSomething isn't working

   on Feb 20, 2026
3. Andy-Jost

   added the

   Bug

   issue type on Feb 20, 2026
4. kkraus14 commented on Feb 23, 2026

   

   kkraus14

   on Feb 23, 2026

   Collaborator

   More actions

   Was this fixed by #1660?
5. Andy-Jost commented on Feb 23, 2026

   

   Andy-Jost

   on Feb 23, 2026

   ContributorAuthor

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   Yes. The description needs to be improved. This item is to get a testcase to include in our unit tests.

   👍React with 👍1Reacted by Keith Kraus
6. rparolin

   assigned

   Andy-Jost

   on Feb 27, 2026
7. brandon-b-miller commented on Mar 23, 2026

   

   brandon-b-miller

   on Mar 23, 2026

   Contributor

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   Repro here:

   import io
   import pickle
   
   import cloudpickle
   
   _MINIMAL_PTX = b""".version 8.0
   .target sm_52
   .address_size 64
   """
   
   
   from cuda.core import ObjectCode
   obj = ObjectCode.from_ptx(_MINIMAL_PTX)
   
   pickle.dumps(obj)
   print("pickle.dumps(ObjectCode): ok")
   
   with io.BytesIO() as buf:
       p = cloudpickle.CloudPickler(buf, protocol=4)
       p.dump(obj)

   _pickle.PicklingError: Can't pickle <cyfunction ObjectCode._reduce_helper at 0x7f85a0364fc0>: it's not the same object as cuda.core._module.ObjectCode._reduce_helper
   
8. Andy-Jost

   added a commit that references this issue on Mar 23, 2026

   Add pickle/cloudpickle regression tests for cuda.core objects

   ...

   This issue will close once commit 7a566f5 is merged into the 'main' branch.

   7a566f5
9. Andy-Jost

   closed this as completedin #1810on Mar 23, 2026
10. Andy-Jost

    added a commit that references this issue on Mar 23, 2026

    Add pickle/cloudpickle regression tests for cuda.core objects (#1810)

    ...

    This issue will close once commit 653939e is merged into the 'main' branch.

    653939e