Proof Portal
jsonparser
ProbeLabs23 findings · 123 requirementsWhen ParseInt receives an empty byte slice, the parser shall return MalformedValueError because an empty token is not a valid integer representation.
Specification
The requirement exactly as authored — its complete prose text and, where present, the formal FRETish sentence it compiles to.
When ParseInt receives an empty byte slice, the parser shall return MalformedValueError because an empty token is not a valid integer representation.
the parser shall always satisfy !parseint_input_is_empty | returns_parseint_malformed_for_empty
Rationale & tags
Why this requirement exists, and how it is categorised.
Rationale & tags
Why this requirement exists, and how it is categorised.
Empty input to ParseInt is a distinct boundary case from malformed non-empty tokens and overflow tokens.
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-44
The requirement is narrowly the empty-input partition: ParseInt on an empty slice must return MalformedValueError. parseInt (bytes.go) opens with
l := len(bytes); if l == 0 { return 0, false, false }, i.e. ok=false and overflow=false, and ParseInt (parser.go:2169) maps that (!ok, !overflow) case to MalformedValueError. The MCDC and boundary tests (TestParseIntEmpty, TestMCDC_SYS_REQ_064_Row2/Row3) exercise exactlyParseInt([]byte(""))and assert the malformed error. The KI-2 (sign-only-) and KI-7 (19-digit overflow) defects touch other partitions of parseInt and neither reaches the l==0 guard, so the empty-input obligation itself is genuinely met.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 catalogueBehavior when inputs are absent, nil, zero-length, or blank.
ParseInt on a zero-length token returns 0 (silent success) instead of MalformedValueError, masking missing data as a valid zero and corrupting downstream accumulator invariants.
- 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 !parseint_input_is_empty | returns_parseint_malformed_for_empty
Variables
| Name | Type | Direction | Description |
|---|---|---|---|
| parseint_input_is_empty | — | True when ParseInt receives an empty byte slice. | |
| returns_parseint_malformed_for_empty | — | True when ParseInt returns MalformedValueError for an empty byte slice. |
Witnesses· 3 scenarios total
- TestMCDC_SYS_REQ_064_Row1_TriggerFalseexercises 1 condition scenario
- TestMCDC_SYS_REQ_064_Row2_InvariantViolationexercises 1 condition scenario
- TestMCDC_SYS_REQ_064_Row3_EmptyMalformedexercises 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| # | parseint_input_is_empty | returns_parseint_malformed_for_empty | Result | Proves | Covering test |
|---|---|---|---|---|---|
| 1 | F | F | T | parseint_input_is_empty | |
| 2 | T | F | F | parseint_input_is_empty | |
| 3 | T | T | T | returns_parseint_malformed_for_empty |
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.
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.