FA-4445 / Runtime and resources / Member archive

Weak upgrade requires retained object · case 05

The operation returns a result or retained state that violates this contract: A local shared-ownership model executes [operation,handle,argument] commands. Only owners retain the resource. Output is one result per command; weak and borrowed handles do not retain it. Weak upgrade succeeds only while an owner retains the object and the destination is fresh.

Member previewVariant 5 · 3 implementations · 5 checks per implementation

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 fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
borrow cannot clone or outlive resource	`[true, false, true, false, true, false, true, false, true, [1, true, ["b", "c", "w"]]]`	`[true, false, true, false, true, false, true, false, false, [0, true, ["b", "w"]]]`	Failed

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