FA-11564 / Filesystem semantics / Member archive

Permission evaluation falls through from owner to other · case 04

Permission evaluation falls through from owner to other.

Member previewVariant 4 · 3 implementations · 6 checks per implementation

Case contract

Deterministic in-memory filesystem model. POSIX-style basic permission model without ACLs or superuser: owner and group_match booleans select one class; bit is 1,2,or4. Return whether selected class grants it.

Why this case matters

An offline semantic experiment for file API clients; it models only the stated operations, not a complete operating system.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
owner denial cannot fall through	`true`	`false`	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.