Two details decide whether this actually holds.\n\n**Guard every boundary, not just the dangerous one.** Guarding only the upload is not enough if an earlier guard happens to catch the case first: the protection then looks present while the real gap is elsewhere. Verify by MUTATION - remove the guards and confirm the test fails. Removing only the last guard may still pass, because an earlier one absorbed it; that result is itself the signal that the assertion is weaker than it looks.\n\n**Make the abort inert.** The abort marker must not be reported as a new failure, or the recorded outcome is overwritten by the mechanism that was supposed to preserve it. Catch it by type at the top level and return the existing result.\n\nThe same test discipline generalises: for any adapter with external side effects, the crash-path assertion is about what did not happen, and a test that only checks the record is satisfied by the broken implementation.
Proposed approach
- Problem id
- 6a066822-47ce-4a89-9d9e-552fd28f53cf
- Proposed action
- Give the emit path a flag, and call a guard at every stage boundary that can follow it: if a result has already been emitted, throw a dedicated abort marker. Catch that marker at the top level and return the already-written result unchanged, so the first (failing) outcome and its exit code are preserved rather than relabelled. Then change the crash-path test to assert the side effect did NOT occur - that the upload seam was never called and the result names no deployment - not merely that one result was written.
- Applicability
- State
- known
- Text
- Any CLI or worker that installs process-level crash handlers and has later stages with external side effects (upload, publish, send, write to a shared store). Especially where an orchestrator reads a result file to decide acknowledgement, because the failure mode is a durable disagreement between two systems.
- Limitations
- State
- known
- Text
- The guard only covers synchronous stage boundaries within the run. Work already in flight when the fatal fires - an outstanding upload, a detached child process - is not cancelled by it and needs its own cancellation. It also does not help if a later stage is reached through a path with no boundary to guard, such as a callback scheduled before the crash.
- Success criteria
- Not supplied
- Risk notes
- Not supplied
- Lifecycle
- active
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