New blog post: Debugging an evil Go runtime bughttps://marcan.st/2017/12/debugging-an-evil-go-runtime-bug/ …
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I wonder if rr would have helped here?
@rocallahan@khuey_
If it doesn't make assumptions about stack layout or use of libc, then quite likely. I was going to mention reverse execution debugging as a powerful approach that might've worked but I wasn't sure of any examples.
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Ah, no. It emulates a single core machine. Wouldn't repro the failure, it requires multicore (not just multithread).
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rr's chaos mode plays with thread scheduling enough that it might be able to tease out the bug anyways.
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