Proof Portal
jsonparser
ProbeLabsviewing a historical runWhen the JSON input is truncated in the middle of a structural element (e.g., an object or array that is opened but never closed, such as '{"a":[1,2'), Get shall return a parse-related error and shall not panic.
Specification
The requirement exactly as authored — its complete prose text and, where present, the formal FRETish sentence it compiles to.
When the JSON input is truncated in the middle of a structural element (e.g., an object or array that is opened but never closed, such as '{"a":[1,2'), Get shall return a parse-related error and shall not panic.
the parser shall always satisfy !input_is_truncated_mid_structure | returns_error_for_truncated_mid_structure
Rationale & tags
Why this requirement exists, and how it is categorised.
Rationale & tags
Why this requirement exists, and how it is categorised.
Truncated mid-structure input exercises blockEnd returning -1, which is behaviorally distinct from truncated-at-value-boundary where tokenEnd returns len(data).
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-24
The invariant
!input_is_truncated_mid_structure | returns_error_for_truncated_mid_structurerequires Get to return a parse error without panic when a structure is opened but never closed. On{"a":[1,2or{"a":"hello, internalGetConfig resolves the key then calls getType, whose container/string scan reaches end-of-buffer; stringEndConfig returns (-1,...) when no closing quote is found (parser.go:372) and the block/number scanners are all bounded bylen(data), so the error propagates and no read goes out of bounds. Get (parser.go:1659) therefore returns a non-nil error rather than panicking. TestTruncatedMidStructure exercises unclosed arrays, objects, strings, and deep nesting with a panic-recover guard, and no KI is attached to this requirement.Cited code (4)
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 catalogueGet on {"a":[1,2 (unclosed array) drives the recursion in findKeyStart past EOF; an unchecked data[i] dereference in the value-offset read panics with index-out-of-range.
- 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 !input_is_truncated_mid_structure | returns_error_for_truncated_mid_structure
Variables
| Name | Type | Direction | Description |
|---|---|---|---|
| input_is_truncated_mid_structure | — | True when the JSON input is truncated in the middle of a structural element where an object or array is opened but never closed. | |
| returns_error_for_truncated_mid_structure | — | True when Get returns a parse-related error for input truncated mid-structure, without panicking. |
Witnesses· 3 scenarios total
- TestMCDC_SYS_REQ_042_Row1_TriggerFalseexercises 1 condition scenario
- TestMCDC_SYS_REQ_042_Row2_InvariantViolationexercises 1 condition scenario
- TestMCDC_SYS_REQ_042_Row3_TruncatedErrorexercises 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| # | input_is_truncated_mid_structure | returns_error_for_truncated_mid_structure | Result | Proves | Covering test |
|---|---|---|---|---|---|
| 1 | F | F | T | input_is_truncated_mid_structure | |
| 2 | T | F | F | input_is_truncated_mid_structure | |
| 3 | T | T | T | returns_error_for_truncated_mid_structure |
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.
Loading graph…
Trace evidence
The concrete artifacts linked to this requirement — implementing code, verifying tests, documents, and the findings raised against it.
No findings affect this requirement
Nothing was flagged against this requirement in the pinned run.
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)
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.