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jsonparser
ProbeLabs23 findings · 123 requirementsWhen ParseFloat receives an empty byte slice, the parser shall return MalformedValueError because an empty token is not a valid floating-point representation.
Specification
The requirement exactly as authored — its complete prose text and, where present, the formal FRETish sentence it compiles to.
When ParseFloat receives an empty byte slice, the parser shall return MalformedValueError because an empty token is not a valid floating-point representation.
the parser shall always satisfy !parsefloat_input_is_empty | returns_parsefloat_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 ParseFloat is a distinct boundary case from malformed non-empty 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-45
The requirement is that ParseFloat on an empty slice returns MalformedValueError. ParseFloat (parser.go:2159) calls parseFloat(&b) and maps any error to MalformedValueError; parseFloat delegates directly to strconv.ParseFloat(string(*b), 64) (bytes_safe.go:17 and bytes_unsafe.go:27 for both build tags), and strconv.ParseFloat returns a non-nil
invalid syntaxerror on the empty string. Thus an empty input propagates an error up to MalformedValueError as required. TestParseFloatEmpty and TestMCDC_SYS_REQ_065_Row2/Row3 confirm the empty-input path returns MalformedValueError. No known issue 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.
The tests that discharge each obligation need a synced audit
The evidence matrix behind each obligation comes from the audit index, which is produced by running an audit — not read from git. Nothing here means unknown — not that the requirement has no obligations.
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 !parsefloat_input_is_empty | returns_parsefloat_malformed_for_empty
Variables
| Name | Type | Direction | Description |
|---|---|---|---|
| parsefloat_input_is_empty | — | True when ParseFloat receives an empty byte slice. | |
| returns_parsefloat_malformed_for_empty | — | True when ParseFloat returns MalformedValueError for an empty byte slice. |
Witnesses· 3 scenarios total
- TestMCDC_SYS_REQ_065_Row1_TriggerFalseexercises 1 condition scenario
- TestMCDC_SYS_REQ_065_Row2_InvariantViolationexercises 1 condition scenario
- TestMCDC_SYS_REQ_065_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| # | parsefloat_input_is_empty | returns_parsefloat_malformed_for_empty | Result | Proves | Covering test |
|---|---|---|---|---|---|
| 1 | F | F | T | parsefloat_input_is_empty | |
| 2 | T | F | F | parsefloat_input_is_empty | |
| 3 | T | T | T | returns_parsefloat_malformed_for_empty |
Its place
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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 (2)
- deep_spec_test.godeep_spec_test.go
- mcdc_spec_witnesses_test.gomcdc_spec_witnesses_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.