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SYS-REQ-040SystemReview

When ParseInt receives a non-integer or otherwise malformed token that is not an overflow case, the parser shall return the documented malformed-value error.

PriorityshallTypeguaranteeCategoryfunctionalComponentparserAssuranceEFindingsnone open

Specification

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

Description

When ParseInt receives a non-integer or otherwise malformed token that is not an overflow case, the parser shall return the documented malformed-value error.

FRETish formula
the parser shall always satisfy raw_int_token_is_well_formed | raw_int_token_overflows_int64 | returns_parseint_malformed_error

Rationale & tags

Why this requirement exists, and how it is categorised.

Malformed-token rejection is an externally visible ParseInt outcome and should be specified independently from valid integer parsing and overflow detection.

decompositionparseintedge-case

Verification & provenance

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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, 15:45 UTC · agent:codex
Modified
Apr 14, 2026, 15:45 UTC · agent:codex

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

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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_int_token_is_well_formed | raw_int_token_overflows_int64 | returns_parseint_malformed_error

Variables

NameTypeDirectionDescription
raw_int_token_is_well_formedTrue when ParseInt receives a syntactically well-formed integer token that does not overflow int64.
raw_int_token_overflows_int64True when ParseInt receives an integer token whose magnitude exceeds the supported int64 range.
returns_parseint_malformed_errorTrue when ParseInt returns the documented malformed-value error for a non-integer or otherwise malformed token.

Witnesses· 4 scenarios total

  • TestMCDC_SYS_REQ_040_Row1_InvariantViolation
    mcdc_spec_witnesses_test.go:1397exercises 1 condition scenario
  • TestMCDC_SYS_REQ_040_Row2_MalformedOrOverflow
    mcdc_spec_witnesses_test.go:1405exercises 1 condition scenario
  • TestMCDC_SYS_REQ_040_Row3_WellFormed
    mcdc_spec_witnesses_test.go:1415exercises 1 condition scenario
  • TestParseInt
    parser_test.go:2360exercises 1 condition scenario

Its place

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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
2
At-risk contracts
0

Files to re-check (1)

  • parser.goparser.go

Tests to re-run (2)

  • mcdc_spec_witnesses_test.gomcdc_spec_witnesses_test.go
  • parser_test.goparser_test.go

What this rests on

Discussions

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