[PATCH] tests: commandhelper: Accept POLLNVAL on macOS

[Ján Tomko]

On a Wednesday in 2020, Roman Bolshakov wrote:
>On Wed, Oct 07, 2020 at 07:17:05PM +0200, Ján Tomko wrote:
>> On a Wednesday in 2020, Roman Bolshakov wrote:
>
>Hi Jano,
>
>>
>> *indefinitely
>>
>Thanks, I'll correct it.
>
>> >  BUGS
>> >    The poll() system call currently does not support devices.
>> >
>>
>> Is there a bug that track this? If so, including it in a comment
>> would help us delete this special case in distant future.
>>
>
>Hi Jano,
>
>Apple's poll() implementation was broken in many ways over the years,
>but it's slowly getting better. Originally it wasn't able to deal even
>with stdin [1] and supported only network sockets.
>
>Also, there was a bug in macOS 10.12 [2] that was fixed in 10.12.2. And
>gnustep has a test for the /dev/null bug [3]. Since [3] was done 11
>years ago I haven't submitted a ticket for the issue but I'm surely can
>do that and then I'd add a tag to commit message or a comment:
>
>Apple-Feedback: FB<ISSUE NUMBER>
>
>Would that work for you?
>

Sounds good.

Jano

>1. https://lists.apple.com/archives/darwin-dev/2006/Apr/msg00064.html
>2. https://daniel.haxx.se/blog/2016/10/11/poll-on-mac-10-12-is-broken/
>3. https://github.com/gnustep/libs-base/blob/master/config/config.poll-dev.c
>
>Thanks,
>Roman
>
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