{
  "id": "go/nil-pointer-in-goroutine",
  "signature": "panic: runtime error: invalid memory address or nil pointer dereference [recovered]",
  "signature_zh": "恐慌：运行时错误：无效的内存地址或空指针解引用 [已恢复]",
  "regex": "panic:\\ runtime\\ error:\\ invalid\\ memory\\ address\\ or\\ nil\\ pointer\\ dereference\\ \\[recovered\\]",
  "domain": "go",
  "category": "runtime_error",
  "subcategory": null,
  "root_cause": "A goroutine attempts to access a nil pointer, often due to uninitialized variables or incorrect error handling.",
  "root_cause_type": "generic",
  "root_cause_zh": "goroutine尝试访问空指针，通常由于未初始化的变量或错误的错误处理导致。",
  "versions": [
    {
      "version": "1.0",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "1.21",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "This is tedious and may miss some cases; it does not address the root cause of why the pointer is nil.",
      "fail_rate": 0.6,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Recovering does not fix the underlying issue; it may mask bugs and lead to inconsistent state.",
      "fail_rate": 0.7,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "It can cause data corruption or crashes in production; ignoring is not safe.",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.9,
      "how": "Initialize all pointers properly before use. Use the zero value or allocate memory with new().",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.85,
      "how": "Use error returns to propagate nil pointers, and check errors before dereferencing.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.86,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-04-10",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}