{"abstract":"False child values fail to override parents.","category":"Configuration","checks":7,"contract":"Resolve parent chains before child values, reject missing profiles, reject cycles, remove the reserved parent field, and allow explicit false values to override.","contract_signature":"profiles, name","evaluation_group":"xt-profile-inheritance","failed_approach":"The attempted repair substitutes if k != 'parent' and v is not False. Fixture 6 still yields {'x': True} instead of {'x': False}.","family":"xt-profile-inheritance-false-child","id":"FA-9676","implementations":{"attempt":{"sha256":"ed48d2d81fd733d4c5ba2d25f07abb7df50e7621b85b26a9c8e497d20b010c0d","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(profiles, name):\n    chain = []\n    seen = set()\n    while name is not None:\n        if name in seen: return 'cycle'\n        if name not in profiles: return 'missing'\n        seen.add(name)\n        chain.append(profiles[name])\n        name = profiles[name].get('parent')\n    result = {}\n    for profile in reversed(chain):\n        result.update({k:v for k,v in profile.items() if k != 'parent' and v is not False})\n    return result\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('fixture 1', solve({}, None), {})\ncheck('fixture 2', solve({}, 'x'), 'missing')\ncheck('fixture 3', solve({'a': {'x': 1}}, 'a'), {'x': 1})\ncheck('fixture 4', solve({'a': {'x': 1, 'y': 4}, 'b': {'parent': 'a', 'x': 2}}, 'b'), {'x': 2, 'y': 4})\ncheck('fixture 5', solve({'a': {'parent': 'b'}, 'b': {'parent': 'a'}}, 'a'), 'cycle')\ncheck('fixture 6', solve({'a': {'x': True}, 'b': {'parent': 'a', 'x': False}}, 'b'), {'x': False})\ncheck('fixture 7', solve({'a': {'parent': 'absent'}}, 'a'), 'missing')\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":"10b5699b7a09be22b79b0373ce6eba7411b47d998db018c4f816a58261b67569","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(profiles, name):\n    chain = []\n    seen = set()\n    while name is not None:\n        if name in seen: return 'cycle'\n        if name not in profiles: return 'missing'\n        seen.add(name)\n        chain.append(profiles[name])\n        name = profiles[name].get('parent')\n    result = {}\n    for profile in reversed(chain):\n        result.update({k:v for k,v in profile.items() if k != 'parent' and v})\n    return result\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('fixture 1', solve({}, None), {})\ncheck('fixture 2', solve({}, 'x'), 'missing')\ncheck('fixture 3', solve({'a': {'x': 1}}, 'a'), {'x': 1})\ncheck('fixture 4', solve({'a': {'x': 1, 'y': 4}, 'b': {'parent': 'a', 'x': 2}}, 'b'), {'x': 2, 'y': 4})\ncheck('fixture 5', solve({'a': {'parent': 'b'}, 'b': {'parent': 'a'}}, 'a'), 'cycle')\ncheck('fixture 6', solve({'a': {'x': True}, 'b': {'parent': 'a', 'x': False}}, 'b'), {'x': False})\ncheck('fixture 7', solve({'a': {'parent': 'absent'}}, 'a'), 'missing')\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":"xt-profile-inheritance-false-child","generated_at":"2026-09-29T14:38:32.097773+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"An offline model of profile inheritance expansion, suitable for testing build and release tooling without external services.","root_cause":"The implementation substitutes if k != 'parent' and v for if k != 'parent', so false child values fail to override parents.","sha256":"258bba7d340bc41fe963aa272eb1a9fdcdeaad8b79d54282760d602cc7eadd72","title":"Profile inheritance expansion: False child values fail to override parents · 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":39.565,"exit_code":1,"observations":[{"actual":{},"check":"fixture 1","expected":{},"passed":true},{"actual":"missing","check":"fixture 2","expected":"missing","passed":true},{"actual":{"x":1},"check":"fixture 3","expected":{"x":1},"passed":true},{"actual":{"x":2,"y":4},"check":"fixture 4","expected":{"x":2,"y":4},"passed":true},{"actual":"cycle","check":"fixture 5","expected":"cycle","passed":true},{"actual":{"x":true},"check":"fixture 6","expected":{"x":false},"passed":false},{"actual":"missing","check":"fixture 7","expected":"missing","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 1\", \"actual\": {}, \"expected\": {}, \"passed\": true}, {\"check\": \"fixture 2\", \"actual\": \"missing\", \"expected\": \"missing\", \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": {\"x\": 1}, \"expected\": {\"x\": 1}, \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": {\"x\": 2, \"y\": 4}, \"expected\": {\"x\": 2, \"y\": 4}, \"passed\": true}, {\"check\": \"fixture 5\", \"actual\": \"cycle\", \"expected\": \"cycle\", \"passed\": true}, {\"check\": \"fixture 6\", \"actual\": {\"x\": true}, \"expected\": {\"x\": false}, \"passed\": false}, {\"check\": \"fixture 7\", \"actual\": \"missing\", \"expected\": \"missing\", \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":39.553,"exit_code":1,"observations":[{"actual":{},"check":"fixture 1","expected":{},"passed":true},{"actual":"missing","check":"fixture 2","expected":"missing","passed":true},{"actual":{"x":1},"check":"fixture 3","expected":{"x":1},"passed":true},{"actual":{"x":2,"y":4},"check":"fixture 4","expected":{"x":2,"y":4},"passed":true},{"actual":"cycle","check":"fixture 5","expected":"cycle","passed":true},{"actual":{"x":true},"check":"fixture 6","expected":{"x":false},"passed":false},{"actual":"missing","check":"fixture 7","expected":"missing","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 1\", \"actual\": {}, \"expected\": {}, \"passed\": true}, {\"check\": \"fixture 2\", \"actual\": \"missing\", \"expected\": \"missing\", \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": {\"x\": 1}, \"expected\": {\"x\": 1}, \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": {\"x\": 2, \"y\": 4}, \"expected\": {\"x\": 2, \"y\": 4}, \"passed\": true}, {\"check\": \"fixture 5\", \"actual\": \"cycle\", \"expected\": \"cycle\", \"passed\": true}, {\"check\": \"fixture 6\", \"actual\": {\"x\": true}, \"expected\": {\"x\": false}, \"passed\": false}, {\"check\": \"fixture 7\", \"actual\": \"missing\", \"expected\": \"missing\", \"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."}}