go runtime_error ai_generated true

警告：数据竞争（协程写操作）

WARNING: DATA RACE (goroutine write)

ID: go/goroutine-race-condition-write

其他格式: JSON · Markdown 中文 · English
80%修复率
88%置信度
0证据数
2024-09-10首次发现

版本兼容性

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

根因分析

多个协程并发访问同一变量，且至少有一个写操作，没有同步机制。

English

Multiple goroutines access the same variable concurrently, with at least one write, without synchronization.

generic

解决方案

  1. 98% 成功率 Use sync.Mutex to protect shared variable 
    var mu sync.Mutex
var counter int
for i := 0; i < 10; i++ {
    go func() {
        mu.Lock()
        counter++
        mu.Unlock()
    }()
}
  2. 95% 成功率 Use atomic operations for simple types 
    var counter int64
for i := 0; i < 10; i++ {
    go func() {
        atomic.AddInt64(&counter, 1)
    }()
}

无效尝试

常见但无效的做法:

  1. Ignoring the race warning 95% 失败

    Data races lead to undefined behavior, crashes, or corrupted data.

  2. Using time.Sleep to synchronize 90% 失败

    Sleep does not guarantee ordering or atomicity; races persist.