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gh-159739: Preserve large years in time conversions - #160175
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The time module added 1900 to the C library year using int arithmetic, which overflowed for timestamps whose calendar year exceeds INT_MAX. On platforms that accept these timestamps, gmtime(), localtime(), and ctime() could report a negative year; perform the addition in a wider type. Backport to 3.15 and 3.14.
jelle-openai
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StanFromIreland and
pganssle
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October 22, 2026 04:15
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The time module added 1900 to the C library year using int arithmetic, which overflowed for timestamps whose calendar year exceeds INT_MAX. On platforms that accept these timestamps, gmtime(), localtime(), and ctime() could report a negative year; perform the addition in a wider type. Backport to 3.15 and 3.14.