{"abstract":"A wildcard Vary response is not stored as a reusable partial object.","category":"HTTP ranges","checks":6,"contract":"Return [store,payload] unless parsed Vary tokens include *, then [bypass,empty]. Tokens may have surrounding ASCII space.","evaluation_group":"s3-http_ranges-cache-assembly","failed_approach":"The partial repair uses return [\"bypass\",\"\"] if vary==[\"*\"] else [\"store\",payload], which still violates the stated contract.","family":"s3-http_ranges-cache-vary-star-bypass","id":"FA-26526","implementations":{"attempt":{"sha256":"9d6e426a77cfb57d68690eac27272843d79760256c52b1e1d201746f12761817","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(vary, payload):\n    return [\"bypass\",\"\"] if vary==[\"*\"] else [\"store\",payload]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('cache-vary-star-bypass fixture 0', solve( [\"accept-encoding\",\"*\"],\"p\"*N), [\"bypass\",\"\"])\ncheck('cache-vary-star-bypass fixture 1', solve([\" * \"],\"p\"), [\"bypass\",\"\"])\ncheck('cache-vary-star-bypass fixture 2', solve([\"*\"],\"p\"), [\"bypass\",\"\"])\ncheck('cache-vary-star-bypass fixture 3', solve([],\"p\"*N), [\"store\",\"p\"*N])\ncheck('cache-vary-star-bypass fixture 4', solve([\"x-star\"],\"p\"), [\"store\",\"p\"])\ncheck('cache-vary-star-bypass fixture 5', solve([\"accept-language\"],\"\"), [\"store\",\"\"])\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":"7010bc2a6e89e1b5f57af3de67e3b06291ac629dabf5216629aa47c605c82604","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(vary, payload):\n    return [\"store\",payload]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('cache-vary-star-bypass fixture 0', solve( [\"accept-encoding\",\"*\"],\"p\"*N), [\"bypass\",\"\"])\ncheck('cache-vary-star-bypass fixture 1', solve([\" * \"],\"p\"), [\"bypass\",\"\"])\ncheck('cache-vary-star-bypass fixture 2', solve([\"*\"],\"p\"), [\"bypass\",\"\"])\ncheck('cache-vary-star-bypass fixture 3', solve([],\"p\"*N), [\"store\",\"p\"*N])\ncheck('cache-vary-star-bypass fixture 4', solve([\"x-star\"],\"p\"), [\"store\",\"p\"])\ncheck('cache-vary-star-bypass fixture 5', solve([\"accept-language\"],\"\"), [\"store\",\"\"])\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":"565643ab08173a411583e14f75dc5b37f64eb7d705dddd825a8f9d415f5f9639","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(vary, payload):\n    return [\"bypass\",\"\"] if any(v.strip()==\"*\" for v in vary) else [\"store\",payload]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('cache-vary-star-bypass fixture 0', solve( [\"accept-encoding\",\"*\"],\"p\"*N), [\"bypass\",\"\"])\ncheck('cache-vary-star-bypass fixture 1', solve([\" * \"],\"p\"), [\"bypass\",\"\"])\ncheck('cache-vary-star-bypass fixture 2', solve([\"*\"],\"p\"), [\"bypass\",\"\"])\ncheck('cache-vary-star-bypass fixture 3', solve([],\"p\"*N), [\"store\",\"p\"*N])\ncheck('cache-vary-star-bypass fixture 4', solve([\"x-star\"],\"p\"), [\"store\",\"p\"])\ncheck('cache-vary-star-bypass fixture 5', solve([\"accept-language\"],\"\"), [\"store\",\"\"])\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-cache-vary-star-bypass","generated_at":"2026-09-29T14:41:16.852634+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 [\"bypass\",\"\"] if any(v.strip()==\"*\" for v in vary) else [\"store\",payload]","root_cause":"The cache-vary-star-bypass decision uses return [\"store\",payload].","sha256":"4b163d84a0e00a0ae0c8c1d5579baa97b65ea304c7166bfee6a99740eda0621e","title":"A wildcard Vary response is not stored as a reusable partial object · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":38.904,"exit_code":1,"observations":[{"actual":["store","p"],"check":"cache-vary-star-bypass fixture 0","expected":["bypass",""],"passed":false},{"actual":["store","p"],"check":"cache-vary-star-bypass fixture 1","expected":["bypass",""],"passed":false},{"actual":["bypass",""],"check":"cache-vary-star-bypass fixture 2","expected":["bypass",""],"passed":true},{"actual":["store","p"],"check":"cache-vary-star-bypass fixture 3","expected":["store","p"],"passed":true},{"actual":["store","p"],"check":"cache-vary-star-bypass fixture 4","expected":["store","p"],"passed":true},{"actual":["store",""],"check":"cache-vary-star-bypass fixture 5","expected":["store",""],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"cache-vary-star-bypass fixture 0\", \"actual\": [\"store\", \"p\"], \"expected\": [\"bypass\", \"\"], \"passed\": false}, {\"check\": \"cache-vary-star-bypass fixture 1\", \"actual\": [\"store\", \"p\"], \"expected\": [\"bypass\", \"\"], \"passed\": false}, {\"check\": \"cache-vary-star-bypass fixture 2\", \"actual\": [\"bypass\", \"\"], \"expected\": [\"bypass\", \"\"], \"passed\": true}, {\"check\": \"cache-vary-star-bypass fixture 3\", \"actual\": [\"store\", \"p\"], \"expected\": [\"store\", \"p\"], \"passed\": true}, {\"check\": \"cache-vary-star-bypass fixture 4\", \"actual\": [\"store\", \"p\"], \"expected\": [\"store\", \"p\"], \"passed\": true}, {\"check\": \"cache-vary-star-bypass fixture 5\", \"actual\": [\"store\", \"\"], \"expected\": [\"store\", \"\"], \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":38.929,"exit_code":1,"observations":[{"actual":["store","p"],"check":"cache-vary-star-bypass fixture 0","expected":["bypass",""],"passed":false},{"actual":["store","p"],"check":"cache-vary-star-bypass fixture 1","expected":["bypass",""],"passed":false},{"actual":["store","p"],"check":"cache-vary-star-bypass fixture 2","expected":["bypass",""],"passed":false},{"actual":["store","p"],"check":"cache-vary-star-bypass fixture 3","expected":["store","p"],"passed":true},{"actual":["store","p"],"check":"cache-vary-star-bypass fixture 4","expected":["store","p"],"passed":true},{"actual":["store",""],"check":"cache-vary-star-bypass fixture 5","expected":["store",""],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"cache-vary-star-bypass fixture 0\", \"actual\": [\"store\", \"p\"], \"expected\": [\"bypass\", \"\"], \"passed\": false}, {\"check\": \"cache-vary-star-bypass fixture 1\", \"actual\": [\"store\", \"p\"], \"expected\": [\"bypass\", \"\"], \"passed\": false}, {\"check\": \"cache-vary-star-bypass fixture 2\", \"actual\": [\"store\", \"p\"], \"expected\": [\"bypass\", \"\"], \"passed\": false}, {\"check\": \"cache-vary-star-bypass fixture 3\", \"actual\": [\"store\", \"p\"], \"expected\": [\"store\", \"p\"], \"passed\": true}, {\"check\": \"cache-vary-star-bypass fixture 4\", \"actual\": [\"store\", \"p\"], \"expected\": [\"store\", \"p\"], \"passed\": true}, {\"check\": \"cache-vary-star-bypass fixture 5\", \"actual\": [\"store\", \"\"], \"expected\": [\"store\", \"\"], \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":36.71,"exit_code":0,"observations":[{"actual":["bypass",""],"check":"cache-vary-star-bypass fixture 0","expected":["bypass",""],"passed":true},{"actual":["bypass",""],"check":"cache-vary-star-bypass fixture 1","expected":["bypass",""],"passed":true},{"actual":["bypass",""],"check":"cache-vary-star-bypass fixture 2","expected":["bypass",""],"passed":true},{"actual":["store","p"],"check":"cache-vary-star-bypass fixture 3","expected":["store","p"],"passed":true},{"actual":["store","p"],"check":"cache-vary-star-bypass fixture 4","expected":["store","p"],"passed":true},{"actual":["store",""],"check":"cache-vary-star-bypass fixture 5","expected":["store",""],"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"cache-vary-star-bypass fixture 0\", \"actual\": [\"bypass\", \"\"], \"expected\": [\"bypass\", \"\"], \"passed\": true}, {\"check\": \"cache-vary-star-bypass fixture 1\", \"actual\": [\"bypass\", \"\"], \"expected\": [\"bypass\", \"\"], \"passed\": true}, {\"check\": \"cache-vary-star-bypass fixture 2\", \"actual\": [\"bypass\", \"\"], \"expected\": [\"bypass\", \"\"], \"passed\": true}, {\"check\": \"cache-vary-star-bypass fixture 3\", \"actual\": [\"store\", \"p\"], \"expected\": [\"store\", \"p\"], \"passed\": true}, {\"check\": \"cache-vary-star-bypass fixture 4\", \"actual\": [\"store\", \"p\"], \"expected\": [\"store\", \"p\"], \"passed\": true}, {\"check\": \"cache-vary-star-bypass fixture 5\", \"actual\": [\"store\", \"\"], \"expected\": [\"store\", \"\"], \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}