git/list[1] front-page[2] threads[3] people[4] search[5] about
 

Re: [PATCH v3] date: detect underflow/overflow when parsing dates with timezone offset

From
Junio C Hamano <gitster@pobox.com>
Date
Jun 14, 2024, 21:02 UTC
Message-ID
<xmqqjzirdyqm.fsf@gitster.g>
In-Reply-To
<CAOLa=ZT2goTBD6WBtjYOYqa6vEsp=P=UzUBzs-5Om3d9HLZYbw@mail.gmail.com>
Karthik Nayak <karthik.188@gmail.com> writes:
Show 6 quoted lines
>> It's even OK to use a hard coded constant for the number of days
>> since the epoch to the git-end-of-time ;-)
>
> That's why I noted it as a _Nit_, mostly because it wasn't anything big.
> But I found that part of it being dynamic and part of it being static
> was inconsistent.

Sure, but it is so tiny thing, we shouldn't waste more time than we spend getting the tests right even on 32-bit systems. We seem to be doing the opposite by talking about this part even more, which is a bit sad. Any comments on the actual patch I sent as a follow-up?

Show 12 quoted lines
>> The timestamp of the git-end-of-time would not fit in time_t on
>> 32-bit systems, I would presume?  If our tests are trying to see if
>> timestamps around the beginning of year 2100 are handled
>> "correctly", the definition of the correctness needs to be
>> consitional on the platform.
>>
>> On systems with TIME_T_IS_64BIT, we'd want to see such a timestamp
>> to be represented fine.  On systems without, we'd want to see the
>> "Timestamp too large for this system" error when we feed such a
>> timestamp to be parsed.
>>
>> Thanks.
Previous: Karthik NayakNext: Karthik Nayak
Message 28 of 29 in “fix: prevent date underflow when using positive timezone offset”
  1. fix: prevent date underflow when using positive timezone offsetdarcy via GitGitGadget, May 27, 2024
  2. Patrick SteinhardtMay 28, 2024
  3. Phillip WoodMay 28, 2024
  4. Junio C HamanoMay 28, 2024
  5. date: detect underflow when parsing dates with positive timezone offsetdarcy via GitGitGadget, Jun 2, 2024
  6. Junio C HamanoJun 3, 2024
  7. darcyJun 3, 2024
  8. Phillip WoodJun 3, 2024
  9. darcyJun 4, 2024
  10. Jeff KingJun 4, 2024
  11. darcyJun 5, 2024
  12. Phillip WoodJun 5, 2024
  13. Junio C HamanoJun 5, 2024
  14. darcyJun 6, 2024
  15. date: detect underflow/overflow when parsing dates with timezone offsetdarcy via GitGitGadget, Jun 7, 2024
  16. Junio C HamanoJun 7, 2024
  17. Junio C HamanoJun 8, 2024
  18. Junio C HamanoJun 14, 2024
  19. Karthik NayakJun 15, 2024
  20. Junio C HamanoJun 11, 2024
  21. rsbecker@nexbridge.comJun 11, 2024
  22. Junio C HamanoJun 11, 2024
  23. Phillip WoodJun 12, 2024
  24. Karthik NayakJun 12, 2024
  25. Phillip WoodJun 13, 2024
  26. Junio C HamanoJun 13, 2024
  27. Karthik NayakJun 14, 2024
  28. Junio C HamanoJun 14, 2024
  29. Karthik NayakJun 15, 2024

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.