FA-4968 / Descriptor lookup / Member archive

Data descriptor storage: Deletes the shadow key instead of the descriptor backing key · case 03

Deletes the shadow key instead of the descriptor backing key and changes the required Python-language result.

Member previewVariant 3 · 3 implementations · 4 checks per implementation

Case scope

Deletes the shadow key instead of the descriptor backing key and changes the required Python-language result.

Why this case matters

Runs Python standard-library language operations in a deterministic local reproducer. Literal expected answers are authored independently. Related defects share an evaluation group to avoid benchmark split leakage.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
set and delete dispatch	`[[5, 5], {"_value": 5}]`	`[[5, 7], {}]`	Failed

MEMBER ARCHIVE

The complete case is available to members.

This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

Member access is invitation-based. Sign in with your invited account to inspect the sources.