pymol crashing under Qt on Catalina

[Chris Jones]

> On 13 Oct 2019, at 3:11 pm, Joshua Root <jmr at macports.org> wrote:
> 
> On 2019-10-14 00:59 , Jack Howarth wrote:
>> 
>> 
>>> On Sun, Oct 13, 2019 at 9:49 AM Chris Jones <jonesc at hep.phy.cam.ac.uk
>>> <mailto:jonesc at hep.phy.cam.ac.uk>> wrote:
>>> 
>>> 
>>> 
>>>    On 13 Oct 2019, at 2:46 pm, Joshua Root <jmr at macports.org
>>>    <mailto:jmr at macports.org>> wrote:
>>> 
>>>    On 2019-10-14 00:35 , Chris Jones wrote:
>>>> 
>>>>    After that, my next guess would perhaps another issue related to the
>>>>    stack-check issue with Xcode 11. See e.g. the fix I added for
>>>>    OpenBLAS
>>>> 
>>>>    https://github.com/macports/macports-ports/commit/6e78e5c9495b4dc4e7e050fae2b41dd5b9accfdd#diff-a755de84ca7f97ab071328807d829e0b
>>> 
>>>    I'd be wary of removing a hardening measure and leaving it at that. It
>>>    could be revealing a genuine stack-smashing bug.
>> 
>>    Agreed. Accordingly to Jeremy though its a Xcode bug expected to be
>>    fixed in 11.2. Thats why I subsequently added a version check, see e.g.
> 
> Ah, good to know. Do you have a link to Jeremy's statement out of curiosity?

No I don’t, I only know this second hand from a comment by Ken...

> 
>>    https://github.com/macports/macports-ports/blob/master/math/OpenBLAS/Portfile
>> 
>>    Line 109.
>> 
>>> 
>>>    - Josh
>> 
>> 
>> Josh,
>>      Does anyone know if this is already fixed in the posted Xcode 11.2
>> beta 2? If so, would rebuilding the OpenBLAS package with it be
>> sufficient or aren't we sure where the offending code lies?
>>             Jack
> 
> I don't know sorry.
> 
> - Josh