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bpo-43795: PEP-652: Simplify headers for easier static analysis - #25483
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This makes static analysis easier. From discussion at https://discuss.python.org/t/pep-652-maintaining-the-stable-abi/6986/13 it is clear that: - parsing C to get information is okay (though I personally prefer to *generate* it) - writing a full C parser is a monumental task (and adding an existing one as a dependency is not feasible) I think it's reasonable to simplify our declarations in order to make header checks easier, rather than write a parser that can handle all C.
This makes static analysis of the headers easier.
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As part of the PEP-652 implementation, I'll tighten the CI check
for functions/data defined with
Py_LIMITED_API.Discussion in https://discuss.python.org/t/pep-652-maintaining-the-stable-abi/6986
suggests that parsing C headers is OK (though personally I'd rather generate it...),
but writing a full C parser is a monumental task and adding an existing one as a
dependency brings too many vendoring/bootstraping issues.
So, for the check I'll use a "simple" regex on preprocessor output, and adapt
the few trivial places where the regex won't work.
_Py_NO_RETURN, so the annotation can beremoved from preprocessor output.
https://bugs.python.org/issue43795