[New-bugs-announce] [issue44562] types.GenericAlias should decref instead of using delete in tp_new

[Ken Jin]

New submission from Ken Jin <kenjin4096 at gmail.com>:

Ref: comment chain at https://github.com/python/cpython/pull/27008#discussion_r663450441.

setup_ga fails only if PyTuple_Pack fails, which usually happens when Python is out of memory. The cleanup code for setup_ga shouldn't use PyObject_GC_DEL as mentioned in Pablo's comment above.

I don't know how to add a test for out of memory, so I'll send a PR without test soon.

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messages: 396944
nosy: kj, pablogsal
priority: normal
severity: normal
status: open
title: types.GenericAlias should decref instead of using delete in tp_new
versions: Python 3.10, Python 3.11, Python 3.9

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<https://bugs.python.org/issue44562>
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