[New-bugs-announce] [issue37013] Fatal Python error in socket.if_indextoname()

[Zackery Spytz]

New submission from Zackery Spytz <zspytz at gmail.com>:

Python 3.8.0a4+ (heads/master:ef9d9b6312, May 22 2019, 08:35:25) 
[GCC 9.0.1 20190402 (experimental) [trunk revision 270074]] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import socket
>>> socket.if_indextoname(2**64 - 1)
Fatal Python error: a function returned NULL without setting an error
SystemError: <built-in function if_indextoname> returned NULL without setting an error

Current thread 0x00007f29d708d140 (most recent call first):
  File "<stdin>", line 1 in <module>
Aborted (core dumped)

This is because socket.if_indextoname() does not use PyErr_Occurred() when checking PyLong_AsUnsignedLong() for failure.

----------
components: Extension Modules
messages: 343215
nosy: ZackerySpytz, serhiy.storchaka, vstinner
priority: normal
severity: normal
status: open
title: Fatal Python error in socket.if_indextoname()
type: crash
versions: Python 3.7, Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37013>
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