gh-147988: Initialize digits in long_alloc() in debug mode#147989

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Apr 2, 2026

Commits on Apr 1, 2026

gh-147988: Initialize digits in long_alloc() in debug mode
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PyLongWriter_Finish() detects uninitialized digits
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Commits on Apr 2, 2026

PyLongWriter_Finish() now raises SystemError
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PyLongWriter_Finish() checks most significant bits
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