[New-bugs-announce] [issue45525] PyType_Spec basicsize/itemsize should allow -1 for "inherit"

[Petr Viktorin]

New submission from Petr Viktorin <encukou at gmail.com>:

For cases where you aren't adding new C-level state, especially if don't have the superclass' struct available, it would be good to allow inheriting basicsize/itemsize from the superclass.

(SuperType->tp_size is not easily usable for the same reason PyType_FromSpecWithBases exists: on MSVC, if SuperType comes from a different DLL, it is not a constant expression.)

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messages: 404311
nosy: petr.viktorin
priority: normal
severity: normal
status: open
title: PyType_Spec basicsize/itemsize should allow -1 for "inherit"

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue45525>
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