FA-44072 / Borrow checking / Member archive
A path initialized on every branch remains incorrectly marked moved · case 02
A path initialized on every branch remains incorrectly marked moved.
Case contract
Check ownership lattice join certificates. Definitely initialized paths intersect predecessor sets; possibly moved paths union; unique capabilities survive only if same owner on all paths; returned paths excluded from continuing join; divergent predecessors contribute bottom; reference alternatives union origins; assignment on every path restores initialization; storage incarnations cannot merge by variable spelling; drop flags reflect possibly initialized fields; conditional ownership is not unconditional ownership. Input is a fully explicit descriptor of the stated toy IR. Return rule identifiers in declaration order; absent optional obligations use the provided neutral defaults. No rule is an assertion about a production language.
Why this case matters
A finite offline static-analysis model of ownership and borrowing; it does not execute the analyzed program.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| all-path-reinitialization regression 0 | [] | ["all-path-reinitialization"] | Failed |
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