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ProbeLabs36 findings · 123 requirements
SYS-REQ-057SystemReview

When ParseBoolean receives a partial boolean literal (e.g., "tru", "fals", "t", "f"), the parser shall return MalformedValueError because the token does not match either "true" or "false" exactly.

PriorityshallTypeguaranteeCategoryfunctionalComponentparserAssuranceEFindingsHighworst open

Specification

The requirement exactly as authored — its complete prose text and, where present, the formal FRETish sentence it compiles to.

Description

When ParseBoolean receives a partial boolean literal (e.g., "tru", "fals", "t", "f"), the parser shall return MalformedValueError because the token does not match either "true" or "false" exactly.

FRETish formula
the parser shall always satisfy !raw_boolean_literal_is_partial | returns_error_for_partial_boolean_literal

Rationale & tags

Why this requirement exists, and how it is categorised.

Partial boolean literals are a distinct malformed-input subclass that exercises the bytes.Equal comparison boundary. Truncated network payloads commonly produce these.

parsebooleanpartial-literal

Verification & provenance

How this requirement was checked: the review trail, edit history, and the machine-analysis status terms (each ⓘ explains what it means).

Assurance levelE
Formalizationvalid
Realizabilityrealizable
Vacuitychecked_ok
Strategyfretish

Review

Status
approved
Reviewer
human:leonidbugaev
Reviewed
Apr 23, 2026, 00:00 UTC

History

Created
Apr 14, 2026, 18:00 UTC · agent:claude
Modified
Jul 26, 2026, 14:54 UTC · human:cli

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 catalogue
Discharged
Worst case if violatedCritical

ParseBoolean on a 3-byte tru over-reads 4 bytes past EOF checking for the true/false literal, panicking with index-out-of-range on a buffer that is exactly 3 bytes long.

Discharging evidence1/1 required witnessed
  • nominalrequiredpresent
    Covered 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).

FRETish formula

the parser shall always satisfy !raw_boolean_literal_is_partial | returns_error_for_partial_boolean_literal

Variables

NameTypeDirectionDescription
raw_boolean_literal_is_partialTrue when ParseBoolean receives a partial boolean literal such as "tru" or "fals".
returns_error_for_partial_boolean_literalTrue when ParseBoolean returns MalformedValueError for a partial boolean literal.

Witnesses· 3 scenarios total

  • TestParseBooleanPartialLiterals
    deep_spec_test.go:489
  • TestMCDC_SYS_REQ_057_Row1_TriggerFalse
    mcdc_spec_witnesses_test.go:2016exercises 1 condition scenario
  • TestMCDC_SYS_REQ_057_Row2_InvariantViolation
    mcdc_spec_witnesses_test.go:2028exercises 1 condition scenario
  • TestMCDC_SYS_REQ_057_Row3_PartialError
    mcdc_spec_witnesses_test.go:2036exercises 1 condition scenario
  • TestObligation_SYS_REQ_057
    obligation_evidence_test.go:464

Its place

This requirement shown inside its trace neighbourhood — the parents it satisfies, the code and tests attached to it, and its findings.

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Trace evidence

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Impact

Blast radius — if you change this requirement, what else may need re-checking, and what it in turn depends on.

If you change this

Requirements
0
Files
1
Tests
3
At-risk contracts
0

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

Discussions

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