Why does my Go for loop not increment the loop variable when running concurrently?-Golang-php.cn

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Why does my Go for loop not increment the loop variable when running concurrently?

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Oct 29, 2024 pm 12:08 PM

Why does my Go for loop not increment the loop variable when running concurrently?

Go Memory Model

The missing synchronization in the code snippet you provided allows the compiler to optimize the for loop into a no-op, leaving i unmodified.

When you add a synchronization event, such as a channel operation or a mutex lock, the compiler can no longer make this optimization, and the goroutine will correctly increment i, as you expect.

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