RFR: 8224974: Implement JEP 352

[Dmitry Chuyko]

On 8/7/19 4:29 PM, Andrew Dinn wrote:
> On 07/08/2019 13:04, Dmitry Chuyko wrote:
>> On 8/7/19 2:02 PM, Dmitry Chuyko wrote:
>>> Andrew,
>>>
>>> New code is buildable and new MapFail test passes on different
>>> platforms except it fails on linux i386:
>> Ah, that even was x86_64 (sorry, mixed up results from automated
>> system). I'll try to reproduce it by hand to see if there are any
>> additional details.
> Whew! Thank goodness it is x86_64. You had me very worried when you said
> this was i386 :-)
>
> So, this is indeed a problem with the test. The internal detail message
> for the IOException will vary according to the Linux kernel release. If
> MAP_SYNC is not supported by the Linux kernel it will embed the message
> you saw. If it is supported the message will be the one the test checks for.
>
> I think the best thing is for the test not to bother checking for a
> specific message. The important thing is that we should get either
> IOException or UnsupportedOperationException. Checking for the message
> is not really necessary. I will remove this check from the test.

Ok, it will reduce complexity and likely let the test pass while still 
checking the same thing.

-Dmitry

>
> regards,
>
>
> Andrew Dinn
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