[issue39615] cpython/abstract.h not compatible with C90

[Peter Eisentraut]

Change by Peter Eisentraut <peter at eisentraut.org>:


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keywords: +patch
pull_requests: +17851
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/18481

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39615>
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