{"abstract":"An explicit empty error is treated as successful validation.","category":"Form validation","checks":9,"contract":"Disabled fields hide errors; pending takes precedence; None alone means valid; errors become visible on touch or submit.","contract_signature":"error, touched, submitted, disabled, pending","evaluation_group":"xi-validation-visibility","failed_approach":"Truthiness in the opposite direction marks nonempty errors valid.","family":"xi-validation-visibility-empty-message","id":"FA-8016","implementations":{"attempt":{"sha256":"b4fa1fa1f100e446eed1d7d6e251bfd8b2a87f10a2909354e4c38074f6a7b9ae","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(error, touched, submitted, disabled, pending):\n    if disabled: return 'hidden'\n    if pending: return 'checking'\n    if error: return 'valid'\n    if touched or submitted: return error\n    return 'hidden'\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('disabled', solve('required', True, True, True, False), 'hidden')\ncheck('pending', solve('stale', True, True, False, True), 'checking')\ncheck('empty error', solve('', True, False, False, False), '')\ncheck('submit', solve('required', False, True, False, False), 'required')\ncheck('touched', solve('required', True, False, False, False), 'required')\ncheck('pristine', solve('required', False, False, False, False), 'hidden')\ncheck('valid', solve(None, True, True, False, False), 'valid')\ncheck('parameterized error', solve('error'+str(N), False, True, False, False), 'error'+str(N))\nfor repetition in range(N):\n    check('repeat valid', solve(None, True, True, False, False), 'valid')\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"c1cbeda8c9dd9751020e0e0325fa013010d2e8895558bcfb11420d65de760e07","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(error, touched, submitted, disabled, pending):\n    if disabled: return 'hidden'\n    if pending: return 'checking'\n    if not error: return 'valid'\n    if touched or submitted: return error\n    return 'hidden'\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('disabled', solve('required', True, True, True, False), 'hidden')\ncheck('pending', solve('stale', True, True, False, True), 'checking')\ncheck('empty error', solve('', True, False, False, False), '')\ncheck('submit', solve('required', False, True, False, False), 'required')\ncheck('touched', solve('required', True, False, False, False), 'required')\ncheck('pristine', solve('required', False, False, False, False), 'hidden')\ncheck('valid', solve(None, True, True, False, False), 'valid')\ncheck('parameterized error', solve('error'+str(N), False, True, False, False), 'error'+str(N))\nfor repetition in range(N):\n    check('repeat valid', solve(None, True, True, False, False), 'valid')\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":" This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"xi-validation-visibility-empty-message","generated_at":"2026-09-29T14:38:17.478517+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"A deterministic model of validation message disclosure; this isolates one interface invariant without requiring a browser.","root_cause":"The empty message operation uses `if not error:` where the contract requires `if error is None:`.","sha256":"9ca2bc327d1c194f64e4c775d94c3260b9aefa8d11f8a1b2b96cea572a67c222","title":"Validation message disclosure: An explicit empty error is treated as successful validation · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":40.269,"exit_code":1,"observations":[{"actual":"hidden","check":"disabled","expected":"hidden","passed":true},{"actual":"checking","check":"pending","expected":"checking","passed":true},{"actual":"","check":"empty error","expected":"","passed":true},{"actual":"valid","check":"submit","expected":"required","passed":false},{"actual":"valid","check":"touched","expected":"required","passed":false},{"actual":"valid","check":"pristine","expected":"hidden","passed":false},{"actual":null,"check":"valid","expected":"valid","passed":false},{"actual":"valid","check":"parameterized error","expected":"error1","passed":false},{"actual":null,"check":"repeat valid","expected":"valid","passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"disabled\", \"actual\": \"hidden\", \"expected\": \"hidden\", \"passed\": true}, {\"check\": \"pending\", \"actual\": \"checking\", \"expected\": \"checking\", \"passed\": true}, {\"check\": \"empty error\", \"actual\": \"\", \"expected\": \"\", \"passed\": true}, {\"check\": \"submit\", \"actual\": \"valid\", \"expected\": \"required\", \"passed\": false}, {\"check\": \"touched\", \"actual\": \"valid\", \"expected\": \"required\", \"passed\": false}, {\"check\": \"pristine\", \"actual\": \"valid\", \"expected\": \"hidden\", \"passed\": false}, {\"check\": \"valid\", \"actual\": null, \"expected\": \"valid\", \"passed\": false}, {\"check\": \"parameterized error\", \"actual\": \"valid\", \"expected\": \"error1\", \"passed\": false}, {\"check\": \"repeat valid\", \"actual\": null, \"expected\": \"valid\", \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":41.209,"exit_code":1,"observations":[{"actual":"hidden","check":"disabled","expected":"hidden","passed":true},{"actual":"checking","check":"pending","expected":"checking","passed":true},{"actual":"valid","check":"empty error","expected":"","passed":false},{"actual":"required","check":"submit","expected":"required","passed":true},{"actual":"required","check":"touched","expected":"required","passed":true},{"actual":"hidden","check":"pristine","expected":"hidden","passed":true},{"actual":"valid","check":"valid","expected":"valid","passed":true},{"actual":"error1","check":"parameterized error","expected":"error1","passed":true},{"actual":"valid","check":"repeat valid","expected":"valid","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"disabled\", \"actual\": \"hidden\", \"expected\": \"hidden\", \"passed\": true}, {\"check\": \"pending\", \"actual\": \"checking\", \"expected\": \"checking\", \"passed\": true}, {\"check\": \"empty error\", \"actual\": \"valid\", \"expected\": \"\", \"passed\": false}, {\"check\": \"submit\", \"actual\": \"required\", \"expected\": \"required\", \"passed\": true}, {\"check\": \"touched\", \"actual\": \"required\", \"expected\": \"required\", \"passed\": true}, {\"check\": \"pristine\", \"actual\": \"hidden\", \"expected\": \"hidden\", \"passed\": true}, {\"check\": \"valid\", \"actual\": \"valid\", \"expected\": \"valid\", \"passed\": true}, {\"check\": \"parameterized error\", \"actual\": \"error1\", \"expected\": \"error1\", \"passed\": true}, {\"check\": \"repeat valid\", \"actual\": \"valid\", \"expected\": \"valid\", \"passed\": true}], \"passed\": false}\n"}},"member_only":{"stages":["fixed"],"fields":["implementations.fixed","verification.fixed","harness","repair"],"note":"The verified repair, its recorded checks, the repair description, and the scoring harness are available to members."}}