go type_error ai_generated true

恐慌：接口转换：接口为nil，不是string（在协程中）

panic: interface conversion: interface is nil, not string (in goroutine)

ID: go/goroutine-racy-interface-conversion

其他格式: JSON · Markdown 中文 · English
80%修复率
84%置信度
0证据数
2025-07-14首次发现

版本兼容性

版本状态引入弃用备注
1.0 active — — —
1.20 active — — —

根因分析

协程在未检查的情况下对nil接口进行类型断言，导致恐慌。

English

Goroutine attempts type assertion on a nil interface without checking, causing panic.

generic

解决方案

  1. 95% 成功率 Use comma-ok type assertion 
    if s, ok := i.(string); ok {
    fmt.Println(s)
} else {
    log.Println("i is not string")
}
  2. 90% 成功率 Check for nil before type assertion 
    if i != nil {
    if s, ok := i.(string); ok {
        fmt.Println(s)
    }
}

无效尝试

常见但无效的做法:

  1. Using recover() to catch panic 90% 失败

    Recover works but doesn't fix the nil interface; data may be lost.

  2. Ignoring type assertion and using raw interface 80% 失败

    Raw interface cannot be used as string; compilation error or runtime panic.