Fix undefined behaviour in datetime.time.fromisoformat()#111982
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string without a timezone. 'tzoffset' is not assigned to by parse_isoformat_time if it returns 0, but time_fromisoformat then passes tzoffset to another function, which is undefined behaviour (even if the function in question does not use the value).
pganssle
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This looks like it was always supposed to be assigned zero anyway, I think. Probably either missed the assignment, or was confused about the syntax of defining multiple variables on one line. I would not put either mistake by myself, assuming I wrote this in the first place 😅
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Yeah, the other call to the two functions (datetime_fromisoformat) does initialize tzoffset, so I assumed it was a mistake :) |
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Thanks @Yhg1s for the PR 🌮🎉.. I'm working now to backport this PR to: 3.11. |
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Thanks @Yhg1s for the PR 🌮🎉.. I'm working now to backport this PR to: 3.12. |
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…1982) Fix undefined behaviour in datetime.time.fromisoformat() when parsing a string without a timezone. 'tzoffset' is not assigned to by parse_isoformat_time if it returns 0, but time_fromisoformat then passes tzoffset to another function, which is undefined behaviour (even if the function in question does not use the value). (cherry picked from commit 21615f7) Co-authored-by: T. Wouters <thomas@python.org>
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GH-111991 is a backport of this pull request to the 3.11 branch. |
miss-islington
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…1982) Fix undefined behaviour in datetime.time.fromisoformat() when parsing a string without a timezone. 'tzoffset' is not assigned to by parse_isoformat_time if it returns 0, but time_fromisoformat then passes tzoffset to another function, which is undefined behaviour (even if the function in question does not use the value). (cherry picked from commit 21615f7) Co-authored-by: T. Wouters <thomas@python.org>
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GH-111992 is a backport of this pull request to the 3.12 branch. |
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…11982) (#111991) Fix undefined behaviour in datetime.time.fromisoformat() (GH-111982) Fix undefined behaviour in datetime.time.fromisoformat() when parsing a string without a timezone. 'tzoffset' is not assigned to by parse_isoformat_time if it returns 0, but time_fromisoformat then passes tzoffset to another function, which is undefined behaviour (even if the function in question does not use the value). (cherry picked from commit 21615f7) Co-authored-by: T. Wouters <thomas@python.org>
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…11982) (#111992) Fix undefined behaviour in datetime.time.fromisoformat() (GH-111982) Fix undefined behaviour in datetime.time.fromisoformat() when parsing a string without a timezone. 'tzoffset' is not assigned to by parse_isoformat_time if it returns 0, but time_fromisoformat then passes tzoffset to another function, which is undefined behaviour (even if the function in question does not use the value). (cherry picked from commit 21615f7) Co-authored-by: T. Wouters <thomas@python.org>
aisk
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Fix undefined behaviour in datetime.time.fromisoformat() when parsing a string without a timezone. 'tzoffset' is not assigned to by parse_isoformat_time if it returns 0, but time_fromisoformat then passes tzoffset to another function, which is undefined behaviour (even if the function in question does not use the value).
Glyphack
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Fix undefined behaviour in datetime.time.fromisoformat() when parsing a string without a timezone. 'tzoffset' is not assigned to by parse_isoformat_time if it returns 0, but time_fromisoformat then passes tzoffset to another function, which is undefined behaviour (even if the function in question does not use the value).
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Fix undefined behaviour in datetime.time.fromisoformat() when parsing a string without a timezone. 'tzoffset' is not assigned to by parse_isoformat_time if it returns 0, but time_fromisoformat then passes tzoffset to another function, which is undefined behaviour (even if the function in question does not use the value).