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ProbeLabs36 findings · 123 requirements
SYS-REQ-108SystemReview

When ParseString is called on a byte slice containing standard JSON escape sequences (backslash-n, backslash-t, double backslash, backslash-solidus, backslash-doublequote, backslash-uXXXX), the decoded Go string shall contain the correct Unicode codepoints such that re-encoding to JSON would produce semantically equivalent escape sequences.

PriorityshallTypeguaranteeCategoryfunctionalComponentparserAssuranceEFindingsnone open

Specification

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

Description

When ParseString is called on a byte slice containing standard JSON escape sequences (backslash-n, backslash-t, double backslash, backslash-solidus, backslash-doublequote, backslash-uXXXX), the decoded Go string shall contain the correct Unicode codepoints such that re-encoding to JSON would produce semantically equivalent escape sequences.

FRETish formula
the parser shall always satisfy !parsestring_input_has_standard_escapes | parsestring_roundtrip_preserves_semantics

Rationale & tags

Why this requirement exists, and how it is categorised.

Encoding safety for ParseString ensures that the decode path does not lose information. The decoded string must represent the same semantic content as the original JSON encoding.

parsestringencoding_safety

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 21, 2026, 00:00 UTC

History

Created
Apr 21, 2026, 00:00 UTC · agent:claude
Modified
Jul 26, 2026, 13:17 UTC · human:cli

Obligations

What this requirement must witness to be considered satisfied — the required evidence, and the tests that discharge each one.

No obligations recorded for this requirement

Proof obligations are recorded once evidence is generated. None have been captured here yet — this is expected, not a gap in the requirement itself. A required class of evidence the requirement must witness — the bridge between the requirement existing and it being proven.

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 !parsestring_input_has_standard_escapes | parsestring_roundtrip_preserves_semantics

Variables

NameTypeDirectionDescription
parsestring_input_has_standard_escapesTrue when ParseString input contains standard JSON escape sequences.
parsestring_roundtrip_preserves_semanticsTrue when ParseString decoded string preserves semantic equivalence with original JSON encoding.

Witnesses· 3 scenarios total

  • TestMCDC_SYS_REQ_108_Row1_TriggerFalse
    mcdc_spec_witnesses_test.go:3490exercises 1 condition scenario
  • TestMCDC_SYS_REQ_108_Row2_InvariantViolation
    mcdc_spec_witnesses_test.go:3498exercises 1 condition scenario
  • TestParseStringEncodingSafetyRoundtrip
    obligation_property_test.go:507exercises 1 condition scenario

Its place

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Trace evidence

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No implementation linked

No source files are traced to this requirement yet.

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
0
Tests
2
At-risk contracts
0

Tests to re-run (2)

  • mcdc_spec_witnesses_test.gomcdc_spec_witnesses_test.go
  • obligation_property_test.goobligation_property_test.go

What this rests on

Discussions

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