[Openmcl-devel] CCL under Mac OS 10.13.4

[R. Matthew Emerson]

> On May 8, 2018, at 10:27 AM, R. Matthew Emerson <rme at acm.org> wrote:
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> 
> 
>> On May 7, 2018, at 5:38 PM, Mark Klein <m_klein at mit.edu> wrote:
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>> 
>> Ever since I upgraded my Mac to OS 10.13.4 (“High Sierra”) my Mac has been hanging, at unpredictable times, when I run CCL 1.11-store-r16714 (I get the “spinning color wheel” cursor)  - even if I haven’t loaded any lisp code yet. Is this a known problem, perhaps associated with the Mac OS change from the HFS+ to APFS file systems? Is there a fix?
> 
> This is the first I have heard about this problem.  Is anyone else seeing this?  
> 
> I'll try to investigate soon, but I'm working on another issue at the moment.  The issue that I'm working on is, in fact, a Mac-only issue.  It appears to be a problem with suspending workqueue threads (as used by libdispatch/GCD).  This has been an ongoing source of trouble.  But, I didn't think that the basic IDE was affected.
> 
> I cannot imagine that it has anything to do with the file system.

I made https://github.com/Clozure/ccl/issues/128 for this, by the way.