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SYS-REQ-075SystemReview

When GetInt is called on malformed input where the underlying Get call returns an error, GetInt shall propagate that error to the caller.

PriorityshallTypeguaranteeCategoryfunctionalComponentparserAssuranceEFindingsnone open

Specification

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

Description

When GetInt is called on malformed input where the underlying Get call returns an error, GetInt shall propagate that error to the caller.

FRETish formula
the parser shall always satisfy !getint_input_is_malformed | returns_getint_error_for_malformed

Rationale & tags

Why this requirement exists, and how it is categorised.

GetInt delegates to Get for path resolution. Malformed input errors from Get must be propagated.

getintmalformed

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

Behavior when inputs are syntactically or structurally invalid.

Worst case if violatedCritical

GetInt on adversarial input where Get returns an error discards the error and calls ParseInt on a stale or nil slice, returning a wrong int64 or panicking with index-out-of-range.

Discharging evidence2/2 required witnessed
  • negativerequiredpresent
    Covered by 1 test
  • 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 !getint_input_is_malformed | returns_getint_error_for_malformed

Variables

NameTypeDirectionDescription
getint_input_is_malformed—True when GetInt is called on malformed input where the underlying Get call returns an error.
returns_getint_error_for_malformed—True when GetInt propagates the error from Get for malformed input.

Witnesses· 3 scenarios total

  • TestGetIntMalformedInput
    deep_spec_test.go:726
  • TestMCDC_SYS_REQ_075_Row1_TriggerFalse
    mcdc_spec_witnesses_test.go:2471exercises 1 condition scenario
  • TestMCDC_SYS_REQ_075_Row2_InvariantViolation
    mcdc_spec_witnesses_test.go:2479exercises 1 condition scenario
  • TestMCDC_SYS_REQ_075_Row3_MalformedError
    mcdc_spec_witnesses_test.go:2487exercises 1 condition scenario
  • TestObligation_SYS_REQ_075
    obligation_evidence_test.go:548

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

The concrete artifacts linked to this requirement — implementing code, verifying tests, documents, and the findings raised against it.

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

Parent requirements (1)

Discussions

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