[compiler-rt] r238874 - Tests: disable test of /proc filesystem on Darwin.

[Duncan P. N. Exon Smith]

> On 2015-Jun-05, at 11:11, Evgeniy Stepanov <eugeni.stepanov at gmail.com> wrote:
> 
> It looks like FreeBSD may have /proc, so moving the test to Linux
> would be bad.

Although it might be disappearing there, based on this ancient
reference Wikipedia has on its procfs page:

http://lists.freebsd.org/pipermail/freebsd-fs/2011-February/010760.html

> You could add XFAIL: darwin, or, in this particular
> case, simply exit(0) if the file in /proc could not be opened.

Anyone know lit well enough to add a `procfs` feature?  Seems like

    REQUIRES: procfs

would be the clearest answer.

I don't like `XFAIL`, since this isn't really a test failure that
we're going to try to fix eventually -- it's a feature that Darwin
doesn't have and isn't planning to grow.

> 
> On Fri, Jun 5, 2015 at 11:03 AM, Tim Northover <tnorthover at apple.com> wrote:
>>> IMO this test should be moved to Linux/ (and duplicated to an Android/
>>> directory?),
>> 
>> I thought that originally, but Wiki says /proc filesystems are on at least some BSDs too (though I'm not sure if they support the particular access being done here).
>> 
>>> or moved to a LinuxLike/ directory, or the individual test
>>> file disabled on Darwin.
>> 
>> I didn't know you could disable individual files, that sounds like a reasonable change if it is possible though.
>> 
>> Tim.