Message283118
$ cat baderror.py
class BadError(Exception):
def __init__(self):
self.i = 0
def __hash__(self):
self.i += 1
return self.i
e = BadError()
raise e from e
$ ./python.exe -V
Python 3.5.2+
$ ./python.exe baderror.py
Segmentation fault: 11
I have reproduced this with Python 3.3, 3.4, 3.5, and 3.6; I assume it's been present throughout the 3 series.
This is because print_exception_recursive in pythonrun.c keeps following the __cause__ chain, and here the exception is its own __cause__. It uses a set to ensure that it breaks cycles, but that doesn't help here because of the exception's incorrect __hash__ method. |
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Date |
User |
Action |
Args |
2016-12-13 16:28:07 | JelleZijlstra | set | recipients:
+ JelleZijlstra |
2016-12-13 16:28:07 | JelleZijlstra | set | messageid: <1481646487.87.0.692050241508.issue28962@psf.upfronthosting.co.za> |
2016-12-13 16:28:07 | JelleZijlstra | link | issue28962 messages |
2016-12-13 16:28:07 | JelleZijlstra | create | |
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