FA-4980 / Descriptor lookup / Member archive
Data descriptor storage: Replaces a known zero backing value with the missing-value default · case 05
Replaces a known zero backing value with the missing-value default and changes the required Python-language result.
Case scope
Replaces a known zero backing value with the missing-value default 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 fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| zero is stored | [[7], {"_value": 0}] | [[0], {"_value": 0}] | Failed |
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