[issue46670] Build Python with -Wundef: don't use undefined macros

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:


New changeset 097f74a5a37e2a8a26d529cede456ede7011b66f by Victor Stinner in branch 'main':
bpo-46670: Define all macros for stringlib (GH-31176)
https://github.com/python/cpython/commit/097f74a5a37e2a8a26d529cede456ede7011b66f


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