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Author petr.viktorin
Recipients corona10, petr.viktorin, pitrou, shihai1991, vstinner
Date 2020-12-29.10:12:04
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <1609236724.31.0.413510312939.issue42747@roundup.psfhosted.org>
In-reply-to
Content 
IMO, these flags are useless. Both the stable ABI and the version-specific builds of extension modules use the memory layout of the current interpreter and fill unset slots with NULL.

Py_TPFLAGS_HAVE_AM_SEND is new in 3.10, so it can  be removed (or replaced by a check for Py_TYPE(iter)->tp_as_async != NULL && Py_TYPE(iter)->tp_as_async->am_send != NULL).

Py_TPFLAGS_HAVE_VERSION_TAG and Py_TPFLAGS_HAVE_FINALIZE are there since 2.6 and 3.8 respectively, and mentioned in documentation. Extensions that use the stable ABI can *check for them*. We cannot do a survey of all existing extension modules. The flags can't be removed without breaking stable ABI.
History
Date User Action Args
2020-12-29 10:12:04petr.viktorinsetrecipients: + petr.viktorin, pitrou, vstinner, corona10, shihai1991
2020-12-29 10:12:04petr.viktorinsetmessageid: <1609236724.31.0.413510312939.issue42747@roundup.psfhosted.org>
2020-12-29 10:12:04petr.viktorinlinkissue42747 messages
2020-12-29 10:12:04petr.viktorincreate