go runtime_error ai_generated true

致命错误: 所有 goroutine 都处于休眠状态 - 死锁！（select 无就绪分支）

fatal error: all goroutines are asleep - deadlock! (select with no ready case)

ID: go/select-no-case-ready-timeout

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80%修复率
88%置信度
0证据数
2024-09-01首次发现

版本兼容性

版本状态引入弃用备注
1.0+ active — — —

根因分析

select 语句没有 default 分支，且其 channel 分支都未就绪，也没有其他 goroutine 能使它们就绪，导致全局死锁。

English

A select statement has no default and none of its channel cases are ready, and no other goroutine can make them ready, causing a global deadlock.

generic

解决方案

  1. 90% 成功率 
    Add a timeout case with time.After and return an error on expiry.
  2. 85% 成功率 
    Ensure at least one case is a send that can always proceed, or restructure so the producer runs before the select.

无效尝试

常见但无效的做法:

  1. 70% 失败

    Busy-looping burns CPU and may still never see data if the producer is also blocked.