go runtime_error ai_generated true

警告：数据竞争：协程X写入，协程Y读取（通道关闭）

WARNING: DATA RACE: Write by goroutine X, Read by goroutine Y (channel close)

ID: go/goroutine-racy-channel-close

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80%修复率
86%置信度
0证据数
2026-01-10首次发现

版本兼容性

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

根因分析

多个协程试图关闭同一个通道而没有同步，导致竞争。

English

Multiple goroutines trying to close the same channel without synchronization, causing race.

generic

解决方案

  1. 95% 成功率 Use sync.Once to ensure close is called only once 
    var once sync.Once
once.Do(func() { close(ch) })
  2. 85% 成功率 Use a dedicated closer goroutine 
    closeCh := make(chan struct{})
go func() {
    <-closeCh
    close(ch)
}()
// signal close
close(closeCh)

无效尝试

常见但无效的做法:

  1. Using atomic flag to guard close 80% 失败

    Close itself is not atomic; still race between check and close.

  2. Using recover() to catch double close panic 90% 失败

    Recover doesn't prevent race; panic may still occur.