FA-4590 / Iterator consumption / Member archive
Repeat retains object identity · case 05
The operation returns a result or retained state that violates this contract: Repeat one mutable list n times, mutate its first repeated reference, and report all repetitions; they alias the same object.
Case scope
A controlled failure with recorded boundary checks.
Why this case matters
A controlled local-runtime regression for collection APIs, language semantics, or ownership wrappers. Fixtures include boundary and interaction cases.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| repeated alias | [["a", "new"], ["a"]] | [["a", "new"], ["a", "new"]] | Failed |
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