{"abstract":"The operation returns a result or retained state that violates this contract: Apply any to a one-pass stream and return [truth result,unconsumed suffix].","category":"Iterator consumption","checks":4,"contract":"Apply any to a one-pass stream and return [truth result,unconsumed suffix]. Inputs are the finite Python values shown by the executable fixtures; no concurrent execution is assumed.","contract_signature":"x, y=None","evaluation_group":"model-a4c8b5d42437a339","failed_approach":"Inspecting only the first value misses later truthy values.","family":"xr-any-short-circuit-consumption","id":"FA-4626","implementations":{"attempt":{"sha256":"ecffdf0b2843d8b608f7844484e110edd5f5c0795842c8ce38e5cc092c2b5aff","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport itertools as it\nfrom collections import deque\nN = 1\nobservations = []\ndef solve(x, y=None):\n    g=iter(x); a=bool(next(g,False)); return [a,list(g)]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('first true stops', solve([False, True, False]), [True, [False]])\ncheck('initial true', solve([True, False]), [True, [False]])\ncheck('all false', solve([False, False]), [False, []])\ncheck('empty', solve([]), [False, []])\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":"0f62e8c16924d3f53bcdfae61a4b30519fb832729bd9f1e70d8814892074167f","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport itertools as it\nfrom collections import deque\nN = 1\nobservations = []\ndef solve(x, y=None):\n    g=iter(x); a=any(list(g)); return [a,list(g)]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('first true stops', solve([False, True, False]), [True, [False]])\ncheck('initial true', solve([True, False]), [True, [False]])\ncheck('all false', solve([False, False]), [False, []])\ncheck('empty', solve([]), [False, []])\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":"xr-any-short-circuit-consumption","generated_at":"2026-09-29T14:37:41.278108+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"A controlled local-runtime regression for collection APIs, language semantics, or ownership wrappers. Fixtures include boundary and interaction cases.","root_cause":"Materializing input eagerly defeats short-circuit consumption.","sha256":"b45b62dfae153497fcce7eab3512ae8a9770d9015872de9be683eea924f4f8e5","title":"Any short circuit consumption · case 01","variant":1,"variant_policy":"Five execution reruns of a fixed adversarial fixture suite; variant number does not alter semantic inputs.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":37.866,"exit_code":1,"observations":[{"actual":[false,[true,false]],"check":"first true stops","expected":[true,[false]],"passed":false},{"actual":[true,[false]],"check":"initial true","expected":[true,[false]],"passed":true},{"actual":[false,[false]],"check":"all false","expected":[false,[]],"passed":false},{"actual":[false,[]],"check":"empty","expected":[false,[]],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"first true stops\", \"actual\": [false, [true, false]], \"expected\": [true, [false]], \"passed\": false}, {\"check\": \"initial true\", \"actual\": [true, [false]], \"expected\": [true, [false]], \"passed\": true}, {\"check\": \"all false\", \"actual\": [false, [false]], \"expected\": [false, []], \"passed\": false}, {\"check\": \"empty\", \"actual\": [false, []], \"expected\": [false, []], \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":37.881,"exit_code":1,"observations":[{"actual":[true,[]],"check":"first true stops","expected":[true,[false]],"passed":false},{"actual":[true,[]],"check":"initial true","expected":[true,[false]],"passed":false},{"actual":[false,[]],"check":"all false","expected":[false,[]],"passed":true},{"actual":[false,[]],"check":"empty","expected":[false,[]],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"first true stops\", \"actual\": [true, []], \"expected\": [true, [false]], \"passed\": false}, {\"check\": \"initial true\", \"actual\": [true, []], \"expected\": [true, [false]], \"passed\": false}, {\"check\": \"all false\", \"actual\": [false, []], \"expected\": [false, []], \"passed\": true}, {\"check\": \"empty\", \"actual\": [false, []], \"expected\": [false, []], \"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."}}