1562
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Ran 10 Jun 2026 11:47AM UTC

Jobs 3

Files 352

Run time 1min

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Committed 10 Jun 2026 04:44AM UTC coverage: 77.727%. First build

Build # 1562

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push

buildkite

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web-flow

Commit Message

staticdata: fix serialization ordering for cyclic datatype supertypes (#62050)

Change the deferred enqueue for `super` types to utilize a worklist
`deferred_supers` that `jl_serialize_reachable` drains only once the
pre-order recursion has fully unwound. This allows us to properly defer
exploration of the supertype and all of its type parameters. This
extends the previous fix in JuliaLang/julia#52752, which did not handle
the case that recursion occurs through supertype parameters.

These kinds of "special case" / "defer sometimes" behaviors are a great
place for bugs to hide anyway, so it is better to have one uniform
behavior to handle `super` in the serializer IMO. Case in point: Also
fix (1) a bug with `must_be_new_dt` not accounting for `super` deferral
and (2) a corner case where items with identical supertypes would be
deserialized incorrectly due to how we iterate `uniquing_super`, spotted
by inspection by Claude Fable 5 and a more serious problem now that this
makes deferrals more common.

Fixes #62047

Bug analyzed and fix implemented by Claude Fable 5
<noreply@anthropic.com> 🤖 🪄

I did check its work / revise the changes and I believe its analysis /
fix is correct.

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

Coverage Stats

65957 of 84857 relevant lines covered (77.73%)

22815628.9 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
1562	macos-coverage - 1562	10 Jun 2026 11:47AM UTC	352	76.09
1562	linux-coverage - 1562	10 Jun 2026 04:45PM UTC	351	76.37
1562	windows-coverage - 1562	10 Jun 2026 02:27PM UTC	318	76.42

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