{"abstract":"Inlining chooses a local name already used by the caller.","category":"Compiler transformation correctness","checks":6,"contract":"Return base if unused, otherwise base_1, base_2, etc choosing the first name absent from caller names.","evaluation_group":"model-f3484c465704cd67","failed_approach":"Appending one suffix still collides when a caller already uses it.","family":"z-compilers-fresh-local","id":"FA-11471","implementations":{"attempt":{"sha256":"a5c94cb5744c31d539b46505314b70ba892ea855271171484a0d3aa1cf245ef2","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(base, used):\n    return base if base not in used else base + '_1'\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nb = 'tmp' + str(N)\ncheck('no names', solve(b,[]), b)\ncheck('unrelated', solve(b,['other']), b)\ncheck('first collision', solve(b,[b]), b+'_1')\ncheck('second collision', solve(b,[b,b+'_1']), b+'_2')\ncheck('gap reuse', solve(b,[b,b+'_2']), b+'_1')\ncheck('multiple occupied', solve(b,[b,b+'_1',b+'_2']), b+'_3')\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":"fdc0d80cfcc86c69988c1b4777d1559ec41792eef8a4e9e8804a2c6bb852e96c","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(base, used):\n    return base\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nb = 'tmp' + str(N)\ncheck('no names', solve(b,[]), b)\ncheck('unrelated', solve(b,['other']), b)\ncheck('first collision', solve(b,[b]), b+'_1')\ncheck('second collision', solve(b,[b,b+'_1']), b+'_2')\ncheck('gap reuse', solve(b,[b,b+'_2']), b+'_1')\ncheck('multiple occupied', solve(b,[b,b+'_1',b+'_2']), b+'_3')\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":"5ac2509d6008f3dedc45ea587d6960fcdbad443c6979cd63bd0a353094471d0b","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(base, used):\n    candidate = base\n    i = 0\n    while candidate in used:\n        i += 1\n        candidate = base + '_' + str(i)\n    return candidate\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nb = 'tmp' + str(N)\ncheck('no names', solve(b,[]), b)\ncheck('unrelated', solve(b,['other']), b)\ncheck('first collision', solve(b,[b]), b+'_1')\ncheck('second collision', solve(b,[b,b+'_1']), b+'_2')\ncheck('gap reuse', solve(b,[b,b+'_2']), b+'_1')\ncheck('multiple occupied', solve(b,[b,b+'_1',b+'_2']), b+'_3')\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":"z-compilers-fresh-local","generated_at":"2026-09-29T14:38:48.157110+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"A deterministic miniature compiler-pass model; inputs are explicit IR facts, not a production compiler.","repair":"Choose the smallest unused suffix for the local base name.","root_cause":"A callee local is copied into the caller without alpha-renaming.","sha256":"91a39a99023e6c7d013edd383cbc9fb9113e800a218bfe6024a578838612e539","title":"Inlining chooses a local name already used by the caller · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":37.932,"exit_code":1,"observations":[{"actual":"tmp1","check":"no names","expected":"tmp1","passed":true},{"actual":"tmp1","check":"unrelated","expected":"tmp1","passed":true},{"actual":"tmp1_1","check":"first collision","expected":"tmp1_1","passed":true},{"actual":"tmp1_1","check":"second collision","expected":"tmp1_2","passed":false},{"actual":"tmp1_1","check":"gap reuse","expected":"tmp1_1","passed":true},{"actual":"tmp1_1","check":"multiple occupied","expected":"tmp1_3","passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"no names\", \"actual\": \"tmp1\", \"expected\": \"tmp1\", \"passed\": true}, {\"check\": \"unrelated\", \"actual\": \"tmp1\", \"expected\": \"tmp1\", \"passed\": true}, {\"check\": \"first collision\", \"actual\": \"tmp1_1\", \"expected\": \"tmp1_1\", \"passed\": true}, {\"check\": \"second collision\", \"actual\": \"tmp1_1\", \"expected\": \"tmp1_2\", \"passed\": false}, {\"check\": \"gap reuse\", \"actual\": \"tmp1_1\", \"expected\": \"tmp1_1\", \"passed\": true}, {\"check\": \"multiple occupied\", \"actual\": \"tmp1_1\", \"expected\": \"tmp1_3\", \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":39.414,"exit_code":1,"observations":[{"actual":"tmp1","check":"no names","expected":"tmp1","passed":true},{"actual":"tmp1","check":"unrelated","expected":"tmp1","passed":true},{"actual":"tmp1","check":"first collision","expected":"tmp1_1","passed":false},{"actual":"tmp1","check":"second collision","expected":"tmp1_2","passed":false},{"actual":"tmp1","check":"gap reuse","expected":"tmp1_1","passed":false},{"actual":"tmp1","check":"multiple occupied","expected":"tmp1_3","passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"no names\", \"actual\": \"tmp1\", \"expected\": \"tmp1\", \"passed\": true}, {\"check\": \"unrelated\", \"actual\": \"tmp1\", \"expected\": \"tmp1\", \"passed\": true}, {\"check\": \"first collision\", \"actual\": \"tmp1\", \"expected\": \"tmp1_1\", \"passed\": false}, {\"check\": \"second collision\", \"actual\": \"tmp1\", \"expected\": \"tmp1_2\", \"passed\": false}, {\"check\": \"gap reuse\", \"actual\": \"tmp1\", \"expected\": \"tmp1_1\", \"passed\": false}, {\"check\": \"multiple occupied\", \"actual\": \"tmp1\", \"expected\": \"tmp1_3\", \"passed\": false}], \"passed\": false}\n"},"fixed":{"elapsed_ms":38.881,"exit_code":0,"observations":[{"actual":"tmp1","check":"no names","expected":"tmp1","passed":true},{"actual":"tmp1","check":"unrelated","expected":"tmp1","passed":true},{"actual":"tmp1_1","check":"first collision","expected":"tmp1_1","passed":true},{"actual":"tmp1_2","check":"second collision","expected":"tmp1_2","passed":true},{"actual":"tmp1_1","check":"gap reuse","expected":"tmp1_1","passed":true},{"actual":"tmp1_3","check":"multiple occupied","expected":"tmp1_3","passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"no names\", \"actual\": \"tmp1\", \"expected\": \"tmp1\", \"passed\": true}, {\"check\": \"unrelated\", \"actual\": \"tmp1\", \"expected\": \"tmp1\", \"passed\": true}, {\"check\": \"first collision\", \"actual\": \"tmp1_1\", \"expected\": \"tmp1_1\", \"passed\": true}, {\"check\": \"second collision\", \"actual\": \"tmp1_2\", \"expected\": \"tmp1_2\", \"passed\": true}, {\"check\": \"gap reuse\", \"actual\": \"tmp1_1\", \"expected\": \"tmp1_1\", \"passed\": true}, {\"check\": \"multiple occupied\", \"actual\": \"tmp1_3\", \"expected\": \"tmp1_3\", \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}