[issue3611] invalid exception context

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc <amauryfa at gmail.com> added the comment:

Antoine, your script hangs at the end due to the io.py deadlock (see #3618)

- at the end of the script, flush_io() is called
- this enters code in io.py
- here, garbage collection occurs (thanks to low thresholds)
- the Bug() instance is collected
- the exception is handled by a PyErr_WriteUnraisable
- which tries to print

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue3611>
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