python-pillow / python-pillow/Sane
core dump when progress callback raises an Exception
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- Dominant language
- C
- Stars
- 61
- Forks
- 22
- PR merge metrics
- No merged PRs in 30d
Description
How to reproduce:
!/usr/bin/env python3
import sane
sane.init()
def progress(*args):
print(args)
1/0
sane.open(sane.get_devices()[0][0]).scan(progress=progress)
core dump is caused by Py_DECREF(result); with a NULL result
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the crash through sane.open(...).scan(progress=progress) with a callback that raises an exception, then inspect the C callback handling around Py_DECREF(result). Done means the same callback reports its exception without causing a core dump.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c, python
- Domain
- api
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100