what is these code line for?

[xie cui]

https://github.com/golang/go/blob/master/src/runtime/proc.go#L248-L251

why these codes, it seem is unnecessary?

[Ian Lance Taylor]

On Tue, Dec 8, 2020 at 11:11 PM xie cui <cuiw...@gmail.com> wrote:
>
> https://github.com/golang/go/blob/master/src/runtime/proc.go#L248-L251
> why these codes, it seem is unnecessary?

Those lines are there to help new ports. If the `exit` function isn't
working right, it might return. If the signal handler isn't working
right, `*x = 0` might not panic. At least the loop will stop the
program from doing something unexpected.

Ian