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ProbeLabs23 findings · 123 requirementsWhen Delete calls internalGet and internalGet returns an error, Delete shall use that error to short-circuit to the safe fallback path (return original input unchanged) rather than discarding the error and proceeding with potentially invalid offsets.
Specification
The requirement exactly as authored — its complete prose text and, where present, the formal FRETish sentence it compiles to.
When Delete calls internalGet and internalGet returns an error, Delete shall use that error to short-circuit to the safe fallback path (return original input unchanged) rather than discarding the error and proceeding with potentially invalid offsets.
the parser shall always satisfy !delete_discards_internalGet_error | delete_propagates_internalGet_error
Rationale & tags
Why this requirement exists, and how it is categorised.
Rationale & tags
Why this requirement exists, and how it is categorised.
Error propagation from internalGet is the defense-in-depth mechanism against sentinel-value panics. If Delete discards the error (assigns to _), it loses the signal that offsets are invalid. This was a contributing factor in the PR #280 class.
Verification & provenance
How this requirement was checked: the review trail, edit history, and the machine-analysis status terms (each ⓘ explains what it means).
Review
- Status
- approved
- Reviewer
- Buger · lead_engineer
- Reviewed
- Aug 20, 2026, 13:11 UTC
History
- Created
- Apr 14, 2026, 18:00 UTC · Claude · AI agent
- Modified
- Aug 20, 2026, 13:11 UTC · Buger
Change history
Every recorded revision of this requirement's source file — newest first, each with its commit message and the diff for that change.
Review history
Human and AI-agent approvals of this requirement — the 'why was this approved' lineage, each with the reviewer's justification and the code it cites.
- Claude:spec Conformance · AI agentApprovedSpec conformanceAug 20, 2026 · last monthREVIEW-31
Every internalGetConfig call in the delete path checks the returned error and short-circuits to the safe fallback
return data, falserather than proceeding with the returned offsets: the parent-path lookup (parser.go:1270-1273), the value-span lookup in the object branch (parser.go:1284-1286), and the full-path lookup in the array branch (parser.go:1320-1323). No branch discards the error and continues with the offsets, so invalid offsets can never drive the copy/slice at parser.go:1380-1382. MCDC Row3 propagated-error witness passes.Cited code (3)
Obligations
What this requirement must witness to be considered satisfied — the required evidence, and the tests that discharge each one.
1 obligation · 1 discharged
Browse the catalogueDelete discards the internalGet error and proceeds with stale offsets into data[prevTok]/data[end:] (parser.go:907), panicking with index-out-of-range on adversarial input — the OSS-Fuzz witness shape.
- nominalrequiredpresentCovered by 1 test
Formula evidence
The formal formula behind this requirement, the variables it is written over, and the tests that exercise it (each term is explained inline).
Formula evidence
The formal formula behind this requirement, the variables it is written over, and the tests that exercise it (each term is explained inline).
FRETish formula
the parser shall always satisfy !delete_discards_internalGet_error | delete_propagates_internalGet_error
Variables
| Name | Type | Direction | Description |
|---|---|---|---|
| delete_discards_internalGet_error | — | True when Delete discards an error returned by internalGet (assigns to underscore) instead of using it to short-circuit. | |
| delete_propagates_internalGet_error | — | True when Delete uses an error returned by internalGet to short-circuit to the safe fallback path. |
Witnesses· 3 scenarios total
- TestMCDC_SYS_REQ_049_Row1_TriggerFalseexercises 1 condition scenario
- TestMCDC_SYS_REQ_049_Row2_InvariantViolationexercises 1 condition scenario
- TestMCDC_SYS_REQ_049_Row3_PropagatedErrorexercises 1 condition scenario
MC/DC truth table· 3 rows
Each row assigns the formula's conditions (T/F) and shows the Result— the formula's value for that input row, not a test pass/fail. A row proves a condition when flipping only that condition flips the outcome. The test that covers each row is linked.
mcdc:ignoreNo-actionfalse-result row satisfied by designUncoveredneeds a covering test| # | delete_discards_internalGet_error | delete_propagates_internalGet_error | Result | Proves | Covering test |
|---|---|---|---|---|---|
| 1 | F | F | T | delete_discards_internalGet_error | |
| 2 | T | F | F | delete_discards_internalGet_error | |
| 3 | T | T | T | delete_propagates_internalGet_error |
Its place
How this requirement connects — what proves it, what it affects, and what it rests on. Authored links only here; automatically derived links come from the audit index.
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Trace evidence
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Impact
Blast radius — authored trace links only (automatically derived links come from the audit index and aren't shown here).
Impact
Blast radius — authored trace links only (automatically derived links come from the audit index and aren't shown here).
If you change this
Files to re-check (1)
- parser.goparser.go
Tests to re-run (3)
- deep_spec_test.godeep_spec_test.go
- mcdc_spec_witnesses_test.gomcdc_spec_witnesses_test.go
- obligation_evidence_test.goobligation_evidence_test.go
What this rests on
Parent requirements (1)
Changes
Semantic changes that move or scope this requirement — the intended work touching it. Each links to the full change.
Discussions
Discuss this with the proof team. Nothing changes in your audit automatically — you open a request and a staff member records any outcome inside the thread.