{"abstract":"Content-Range metadata is retained only for partial or unsatisfied responses.","category":"HTTP ranges","checks":6,"contract":"This serializer emits value only for status206 or416; all other status codes remove it.","evaluation_group":"s3-http_ranges-response-metadata","failed_approach":"The partial repair uses return value if status==206 else None, which still violates the stated contract.","family":"s3-http_ranges-content-range-status-placement","id":"FA-26706","implementations":{"attempt":{"sha256":"d2d4649f948431b6ae58a32db9063093ae4fd6c0ac0fa4424874afced4ab9b31","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(status, value):\n    return value if status==206 else None\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('content-range-status-placement fixture 0', solve(200,\"r\"+str(N)), None)\ncheck('content-range-status-placement fixture 1', solve(416,\"bytes */\"+str(N)), \"bytes */\"+str(N))\ncheck('content-range-status-placement fixture 2', solve(206,\"r\"), \"r\")\ncheck('content-range-status-placement fixture 3', solve(304,\"r\"), None)\ncheck('content-range-status-placement fixture 4', solve(412,\"r\"), None)\ncheck('content-range-status-placement fixture 5', solve(500,\"r\"), None)\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":"f016b7aa4bf4abae2db018afb15a90a2f9a0ec0b2d944d3d44ad26c83ccc29cd","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(status, value):\n    return value\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('content-range-status-placement fixture 0', solve(200,\"r\"+str(N)), None)\ncheck('content-range-status-placement fixture 1', solve(416,\"bytes */\"+str(N)), \"bytes */\"+str(N))\ncheck('content-range-status-placement fixture 2', solve(206,\"r\"), \"r\")\ncheck('content-range-status-placement fixture 3', solve(304,\"r\"), None)\ncheck('content-range-status-placement fixture 4', solve(412,\"r\"), None)\ncheck('content-range-status-placement fixture 5', solve(500,\"r\"), None)\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"},"fixed":{"sha256":"6ad811e4a5ea20ede647867c23c26f61f80e935a31ddecf7e820d59ea48ddd63","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(status, value):\n    return value if status in (206,416) else None\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('content-range-status-placement fixture 0', solve(200,\"r\"+str(N)), None)\ncheck('content-range-status-placement fixture 1', solve(416,\"bytes */\"+str(N)), \"bytes */\"+str(N))\ncheck('content-range-status-placement fixture 2', solve(206,\"r\"), \"r\")\ncheck('content-range-status-placement fixture 3', solve(304,\"r\"), None)\ncheck('content-range-status-placement fixture 4', solve(412,\"r\"), None)\ncheck('content-range-status-placement fixture 5', solve(500,\"r\"), None)\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":"Deterministic simplified range service, with stipulated local policies and already parsed trusted inputs; not a complete HTTP implementation. 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":"s3-http_ranges-content-range-status-placement","generated_at":"2026-09-29T14:41:18.323666+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Range responses combine representation identity, conditional requests, framing, and partial-object state.","repair":"Apply the bounded decision exactly: return value if status in (206,416) else None","root_cause":"The content-range-status-placement decision uses return value.","sha256":"a3c6de8a144f1cdd43073c45359159aba130755f0ec2a0eaf63774e35d0590ee","title":"Content-Range metadata is retained only for partial or unsatisfied responses · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":39.324,"exit_code":1,"observations":[{"actual":null,"check":"content-range-status-placement fixture 0","expected":null,"passed":true},{"actual":null,"check":"content-range-status-placement fixture 1","expected":"bytes */1","passed":false},{"actual":"r","check":"content-range-status-placement fixture 2","expected":"r","passed":true},{"actual":null,"check":"content-range-status-placement fixture 3","expected":null,"passed":true},{"actual":null,"check":"content-range-status-placement fixture 4","expected":null,"passed":true},{"actual":null,"check":"content-range-status-placement fixture 5","expected":null,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"content-range-status-placement fixture 0\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"content-range-status-placement fixture 1\", \"actual\": null, \"expected\": \"bytes */1\", \"passed\": false}, {\"check\": \"content-range-status-placement fixture 2\", \"actual\": \"r\", \"expected\": \"r\", \"passed\": true}, {\"check\": \"content-range-status-placement fixture 3\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"content-range-status-placement fixture 4\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"content-range-status-placement fixture 5\", \"actual\": null, \"expected\": null, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":39.351,"exit_code":1,"observations":[{"actual":"r1","check":"content-range-status-placement fixture 0","expected":null,"passed":false},{"actual":"bytes */1","check":"content-range-status-placement fixture 1","expected":"bytes */1","passed":true},{"actual":"r","check":"content-range-status-placement fixture 2","expected":"r","passed":true},{"actual":"r","check":"content-range-status-placement fixture 3","expected":null,"passed":false},{"actual":"r","check":"content-range-status-placement fixture 4","expected":null,"passed":false},{"actual":"r","check":"content-range-status-placement fixture 5","expected":null,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"content-range-status-placement fixture 0\", \"actual\": \"r1\", \"expected\": null, \"passed\": false}, {\"check\": \"content-range-status-placement fixture 1\", \"actual\": \"bytes */1\", \"expected\": \"bytes */1\", \"passed\": true}, {\"check\": \"content-range-status-placement fixture 2\", \"actual\": \"r\", \"expected\": \"r\", \"passed\": true}, {\"check\": \"content-range-status-placement fixture 3\", \"actual\": \"r\", \"expected\": null, \"passed\": false}, {\"check\": \"content-range-status-placement fixture 4\", \"actual\": \"r\", \"expected\": null, \"passed\": false}, {\"check\": \"content-range-status-placement fixture 5\", \"actual\": \"r\", \"expected\": null, \"passed\": false}], \"passed\": false}\n"},"fixed":{"elapsed_ms":39.765,"exit_code":0,"observations":[{"actual":null,"check":"content-range-status-placement fixture 0","expected":null,"passed":true},{"actual":"bytes */1","check":"content-range-status-placement fixture 1","expected":"bytes */1","passed":true},{"actual":"r","check":"content-range-status-placement fixture 2","expected":"r","passed":true},{"actual":null,"check":"content-range-status-placement fixture 3","expected":null,"passed":true},{"actual":null,"check":"content-range-status-placement fixture 4","expected":null,"passed":true},{"actual":null,"check":"content-range-status-placement fixture 5","expected":null,"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"content-range-status-placement fixture 0\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"content-range-status-placement fixture 1\", \"actual\": \"bytes */1\", \"expected\": \"bytes */1\", \"passed\": true}, {\"check\": \"content-range-status-placement fixture 2\", \"actual\": \"r\", \"expected\": \"r\", \"passed\": true}, {\"check\": \"content-range-status-placement fixture 3\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"content-range-status-placement fixture 4\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"content-range-status-placement fixture 5\", \"actual\": null, \"expected\": null, \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}