Is the square brackets in output of -XX:+PrintStubCode a typo?

[Leslie Zhai]

Hi John,

Thanks for your teaching! 
https://en.wikipedia.org/wiki/Interval_(mathematics)#Including_or_excluding_endpoints

Cheers,

Leslie Zhai

在 2019/2/20 上午3:59, John Rose 写道:
> On Feb 19, 2019, at 4:21 AM, Leslie Zhai <zhaixiang at loongson.cn> wrote:
>> Filed https://bugs.openjdk.java.net/browse/JDK-8219367
> It's not a typo, but rather a legitimate notation.
> Maybe ill-chosen for the application, but not a typo.
> I commented further, on the bug report.
>
> — John