On 3/26/2020 7:19 PM, Ken Brown via Cygwin wrote:
> On 3/26/2020 6:39 PM, Ken Brown via Cygwin wrote:
>> On 3/26/2020 6:01 PM, sten.kristian.ivarsson@gmail.com wrote:
>>> The ENIXIO occurs when parallel child-processes simultaneously using
>>> O_NONBLOCK opening the descriptor.
>>
>> This is consistent with my guess that the error is generated by 
>> fhandler_fifo::wait.  I have a feeling that read_ready should have been 
>> created as a manual-reset event, and that more care is needed to make sure 
>> it's set when it should be.
>>
>>> I could provide a code-snippet
>>> to reproduce it if wanted ?
>>
>> Yes, please!
> 
> That might not be necessary.  If you're able to build the git repo master 
> branch, please try the attached patch.

Here's a better patch.

Ken