go runtime_error ai_generated true

WARNING: DATA RACE 写操作地址 0x... 位于 goroutine N: main.foo() 此前的读操作地址 0x... 位于 goroutine M: main.bar()

WARNING: DATA RACE Write at 0x... by goroutine N: main.foo() Previous read at 0x... by goroutine M: main.bar()

ID: go/race-detector-warning

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80%修复率

90%置信度

0证据数

2024-12-01首次发现

版本兼容性

版本	状态	引入	弃用	备注
1.1+	active	—	—	—

两个 goroutine 在无同步的情况下访问同一内存位置，且至少有一个是写操作。仅在 -race 构建时能被检测到。

Two goroutines accessed the same memory location without synchronization, at least one being a write. Detected only when built with -race.

generic

97% 成功率

var mu sync.Mutex
mu.Lock()
counter++
mu.Unlock()
// or
atomic.AddInt64(&counter, 1)

92% 成功率

for _, item := range items {
    item := item // capture by value
    go func() { process(item) }()
}

常见但无效的做法:

90% 失败
Does not create a happens-before relationship between the two accesses; race detector still fires.
95% 失败
Hides real bugs; production may corrupt data or crash non-deterministically.