{"record":{"id":"28cb24ddf8d71643","repo":"BigPizzaV3/CodexPlusPlus","slug":"grok-alias-28cb24","errorCode":null,"errorMessage":"Grok 模型 {alias} 的上下文窗口过大","messagePattern":"Grok 模型 (.+?) 的上下文窗口过大","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/codex-plus-core/src/grok_config.rs","lineNumber":302,"sourceCode":"        }\n        let source = input.source_alias.trim();\n        if !source.is_empty() && !sources.insert(source.to_string()) {\n            bail!(\"Grok 模型来源别名重复：{source}\");\n        }\n        if !matches!(\n            input.api_backend.trim(),\n            \"responses\" | \"chat_completions\" | \"messages\"\n        ) {\n            bail!(\"Grok 模型 {alias} 的 API 协议无效\");\n        }\n        if input.context_window == Some(0) {\n            bail!(\"Grok 模型 {alias} 的上下文窗口必须大于 0\");\n        }\n        if input\n            .context_window\n            .is_some_and(|value| value > i64::MAX as u64)\n        {\n            bail!(\"Grok 模型 {alias} 的上下文窗口过大\");\n        }\n        if input.remove_api_key && !input.api_key_update.is_empty() {\n            bail!(\"Grok 模型 {alias} 不能同时替换并移除 API Key\");\n        }\n    }\n    Ok(())\n}\n\nfn table_string(doc: &DocumentMut, table: &str, key: &str) -> String {\n    doc.get(table)\n        .and_then(Item::as_table_like)\n        .and_then(|values| values.get(key))\n        .and_then(Item::as_str)\n        .unwrap_or_default()\n        .to_string()\n}\n\nfn item_string<T: TableLike + ?Sized>(table: &T, key: &str) -> String {","sourceCodeStart":284,"sourceCodeEnd":320,"githubUrl":"https://github.com/BigPizzaV3/CodexPlusPlus/blob/b1ed92e5e4a2d74095d4b8db5af43cef7acba9c6/crates/codex-plus-core/src/grok_config.rs#L284-L320","documentation":"context_window is stored as u64 but persisted/compared as i64. validate_request rejects values above i64::MAX to prevent overflow or truncation when the value is written to config or used downstream. Such huge values are never legitimate model windows.","triggerScenarios":"save_grok_config_at called with input.context_window greater than i64::MAX (9,223,372,036,854,775,807) — practically only from sentinel values like u64::MAX, unvalidated user input, or a 'max' placeholder.","commonSituations":"Using u64::MAX as an 'unbounded' sentinel; scripts computing window sizes with overflow; copy-pasted hex/binary values misinterpreted as decimal.","solutions":["Provide the model's real advertised context window (well below i64::MAX)","Use None instead of a sentinel to mean 'unspecified'","Validate/clamp the input in the UI before submitting"],"exampleFix":"// before\ncontext_window: Some(u64::MAX) // sentinel for unlimited\n// after\ncontext_window: None","handlingStrategy":"validation","validationCode":"if let Some(w) = req.context_window { assert!(w <= i64::MAX as u64); }","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Never use u64::MAX or other sentinels for 'unlimited' — use None","Clamp user input to a realistic max (e.g. 10 million tokens)","Store windows as i64 end-to-end to avoid casts"],"tags":["validation","overflow","config"],"backgroundTag":"value-out-of-range","analyzedSha":"b1ed92e5e4a2d74095d4b8db5af43cef7acba9c6","analyzedAt":"2026-09-19T23:35:21.129Z","contentChangedAt":"2026-09-19T23:35:21.129Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}