Does the Go race detector's "failed to restore the stack" warning actually indicate anything?

<p>The only references I found online involved increasing <code>history_size</code> to suppress it. I&#39;m led to believe that it&#39;s not actually a problem, but it still shows up as a data race, which confuses me slightly. If it&#39;s useless, is there a way to make the race detector just ignore it?</p> <hr/>**评论：**<br/><br/>joushou: <pre><p>The race detector works by tracking the various reads and writes. Storing a stack for each of these consumes a lot of memory, so there&#39;s a limit, called the &#34;history_size&#34; (Defined by <a href="https://golang.org/doc/articles/race_detector.html" rel="nofollow">https://golang.org/doc/articles/race_detector.html</a> as &#34;history_size (default 1): The per-goroutine memory access history is 32K * 2**history_size elements.&#34;).</p> <p>&#34;Failed to restore stack&#34; is not an erroneous report, but rather a race report where the stack is not available because it hit the limit. In other words, you need to increase the history_size. Ignoring the error means that you&#39;re ignoring a race. Alternatively, you could simplify your code or test so that it won&#39;t hit the limit.</p></pre>