{"abstract":"CDATA serialization emits an embedded terminator.","category":"Markup","checks":4,"contract":"Wrap text in CDATA, splitting embedded ]]> across adjacent CDATA sections.","evaluation_group":"model-5e3bf600d92bdffb","failed_approach":"The attempted repair handles the primary example but still violates a separate boundary of the same contract.","family":"xp-xml-cdata-terminator","id":"FA-3996","implementations":{"attempt":{"sha256":"5e5b2da60f09f1711920db75c09bbd08a402036400f813f7713fe74c609d919d","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport re, unicodedata, json, csv, io, html, base64, binascii, codecs, struct\nfrom urllib.parse import quote, unquote, unquote_to_bytes, urlencode, parse_qsl, urlsplit, urlunsplit\nfrom email.header import decode_header, make_header\nfrom email.utils import getaddresses\nfrom xml.etree import ElementTree as ET\nimport shlex, string, textwrap\n\nN = 1\nobservations = []\ndef solve(x):\n try:\n return '','')+']]>'\n except Exception as exc:\n return {\"error\": type(exc).__name__}\ndef check(label, actual, expected):\n observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('boundary 1', solve('a]]>b'), 'b]]>')\ncheck('boundary 2', solve('x'), '')\ncheck('boundary 3', solve(''), '')\ncheck('boundary 4', solve(']]>]]>'), ']]]]>]]>')\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":"1cae7d188df5d5c254910ac97f1664d8eefbc93aec6069c5d0fecdbdc07fc82b","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport re, unicodedata, json, csv, io, html, base64, binascii, codecs, struct\nfrom urllib.parse import quote, unquote, unquote_to_bytes, urlencode, parse_qsl, urlsplit, urlunsplit\nfrom email.header import decode_header, make_header\nfrom email.utils import getaddresses\nfrom xml.etree import ElementTree as ET\nimport shlex, string, textwrap\n\nN = 1\nobservations = []\ndef solve(x):\n try:\n return ''\n except Exception as exc:\n return {\"error\": type(exc).__name__}\ndef check(label, actual, expected):\n observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('boundary 1', solve('a]]>b'), 'b]]>')\ncheck('boundary 2', solve('x'), '')\ncheck('boundary 3', solve(''), '')\ncheck('boundary 4', solve(']]>]]>'), ']]]]>]]>')\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":"9cbfd7d0648feaa6e55bca8dc20c19958e58a336e66f41468e6c71803475c66c","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport re, unicodedata, json, csv, io, html, base64, binascii, codecs, struct\nfrom urllib.parse import quote, unquote, unquote_to_bytes, urlencode, parse_qsl, urlsplit, urlunsplit\nfrom email.header import decode_header, make_header\nfrom email.utils import getaddresses\nfrom xml.etree import ElementTree as ET\nimport shlex, string, textwrap\n\nN = 1\nobservations = []\ndef solve(x):\n try:\n return '',']]]]>')+']]>'\n except Exception as exc:\n return {\"error\": type(exc).__name__}\ndef check(label, actual, expected):\n observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('boundary 1', solve('a]]>b'), 'b]]>')\ncheck('boundary 2', solve('x'), '')\ncheck('boundary 3', solve(''), '')\ncheck('boundary 4', solve(']]>]]>'), ']]]]>]]>')\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":"xp-xml-cdata-terminator","generated_at":"2026-09-29T14:37:34.195949+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"A local executable model for consumers of structured text; oracle values are authored literals, not outputs copied from the repaired implementation.","repair":"Implement the complete stated contract, including the boundary fixtures: Wrap text in CDATA, splitting embedded ]]> across adjacent CDATA sections.","root_cause":"The implementation applies an operation whose text or grammar semantics violate this contract: Wrap text in CDATA, splitting embedded ]]> across adjacent CDATA sections.","sha256":"a4a7bd0405d21c4257874ad80d3c1fd08075dca905977f50ee16002100558815","title":"CDATA serialization emits an embedded terminator ยท case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":58.912,"exit_code":1,"observations":[{"actual":"","check":"boundary 1","expected":"b]]>","passed":false},{"actual":"","check":"boundary 2","expected":"","passed":true},{"actual":"","check":"boundary 3","expected":"","passed":true},{"actual":"","check":"boundary 4","expected":"]]]]>]]>","passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"\", \"expected\": \"b]]>\", \"passed\": false}, {\"check\": \"boundary 2\", \"actual\": \"\", \"expected\": \"\", \"passed\": true}, {\"check\": \"boundary 3\", \"actual\": \"\", \"expected\": \"\", \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": \"\", \"expected\": \"]]]]>]]>\", \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":121.46,"exit_code":1,"observations":[{"actual":"b]]>","check":"boundary 1","expected":"b]]>","passed":false},{"actual":"","check":"boundary 2","expected":"","passed":true},{"actual":"","check":"boundary 3","expected":"","passed":true},{"actual":"]]>]]>","check":"boundary 4","expected":"]]]]>]]>","passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"b]]>\", \"expected\": \"b]]>\", \"passed\": false}, {\"check\": \"boundary 2\", \"actual\": \"\", \"expected\": \"\", \"passed\": true}, {\"check\": \"boundary 3\", \"actual\": \"\", \"expected\": \"\", \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": \"]]>]]>\", \"expected\": \"]]]]>]]>\", \"passed\": false}], \"passed\": false}\n"},"fixed":{"elapsed_ms":59.759,"exit_code":0,"observations":[{"actual":"b]]>","check":"boundary 1","expected":"b]]>","passed":true},{"actual":"","check":"boundary 2","expected":"","passed":true},{"actual":"","check":"boundary 3","expected":"","passed":true},{"actual":"]]]]>]]>","check":"boundary 4","expected":"]]]]>]]>","passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"b]]>\", \"expected\": \"b]]>\", \"passed\": true}, {\"check\": \"boundary 2\", \"actual\": \"\", \"expected\": \"\", \"passed\": true}, {\"check\": \"boundary 3\", \"actual\": \"\", \"expected\": \"\", \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": \"]]]]>]]>\", \"expected\": \"]]]]>]]>\", \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}