Differential D51343

libc: Test time zone change detection.
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Authored by des on Jul 16 2025, 1:28 PM.

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rG57ee56578cc5: libc: Test time zone change detection.

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Sponsored by: Klara, Inc.
Sponsored by: NetApp, Inc.

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Repository

rG FreeBSD src repository

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Build Status

Buildable 65484
Build 62367: arc lint + arc unit

Event Timeline

des created this revision.Jul 16 2025, 1:28 PM

Herald added a subscriber: imp. · View Herald TranscriptJul 16 2025, 1:28 PM

des requested review of this revision.Jul 16 2025, 1:28 PM

Harbormaster completed remote builds in B65481: Diff 158599.Jul 16 2025, 1:28 PM

nits

Harbormaster completed remote builds in B65484: Diff 158604.Jul 16 2025, 2:49 PM

tzset is unnecessary and may slow the test down

Harbormaster completed remote builds in B65488: Diff 158616.Jul 16 2025, 4:25 PM

more cleanup

Harbormaster completed remote builds in B65509: Diff 158660.Jul 17 2025, 12:59 PM

markj added a subscriber: markj.Jul 17 2025, 2:58 PM

markj added inline comments.

contrib/tzcode/localtime.c
414	Is this bringing us closer to upstream's code?
lib/libc/tests/stdtime/detect_tz_changes_test.c
56	Probably not much of an issue in practice, but I believe copy_file_range() must be called in a loop to handle short I/O.
153	I believe ATF_* can't be used in a child process.

des marked 3 inline comments as done.Jul 17 2025, 6:21 PM

des added inline comments.

contrib/tzcode/localtime.c
414	No, this code does not exist upstream.
lib/libc/tests/stdtime/detect_tz_changes_test.c
153	It works just fine. It emits an error message to stderr (which we echo) and kills the child (which causes the parent to fail).

des marked 2 inline comments as done.Jul 18 2025, 9:03 AM

des added inline comments.

contrib/tzcode/localtime.c
519	This actually fixes a regression in bc42155199b5. I'll split it out into a separate commit.

rebase

Harbormaster completed remote builds in B65555: Diff 158730.Jul 18 2025, 10:06 AM

des added a parent revision: D51405: tzcode: Fix time zone change detection..Jul 18 2025, 10:06 AM

markj accepted this revision as: markj.Jul 18 2025, 4:16 PM

This revision is now accepted and ready to land.Jul 18 2025, 4:16 PM

Closed by commit rG57ee56578cc5: libc: Test time zone change detection. (authored by des). · Explain WhyJul 18 2025, 5:52 PM

This revision was automatically updated to reflect the committed changes.

des added a commit: rG57ee56578cc5: libc: Test time zone change detection..

Revision Contents
Changeset List

Path

Size

contrib/

tzcode/

3 lines

lib/

libc/

stdtime/

1 line

6 lines

tests/

stdtime/

5 lines

detect_tz_changes_test.c

276 lines

Diff 158604

contrib/tzcode/localtime.c

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lib/libc/stdtime/Makefile.inc

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lib/libc/stdtime/Symbol.map

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lib/libc/tests/stdtime/Makefile

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lib/libc/tests/stdtime/detect_tz_changes_test.c

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