[Openmcl-devel] Re: Status of Cocoa under Tiger?

Gary Byers gb at clozure.com
Thu May 12 15:47:18 PDT 2005

On Thu, 12 May 2005, Dan Knapp wrote:

>> The Cocoa demo seems to work correctly in 050511 running in OS X 10.4,
>> but I have not been able to use Bosco to build Cocoa applications in
>> 10.4.  The simple cocoa example application delivered with Bosco
>> compiles without any error messages, but crashes instantly at startup:
>>> Error: value #<A Dead Mac Pointer> is not of the expected type MACPTR.
>>> While executing: CCL::OBJC-SUBCLASS-P
>  There seem to be a number of ways to get that - I was messing with that 
> last
> month, and have gotten that same error under 10.3, both with Bosco and with
> any other saved Lisp image that has the Cocoa stuff preloaded.  I didn't find
> a solution, unfortunately.
> -- Dan Knapp

My first reaction (I'll try to actually look at this) is that
something's referring to an NSDocument that existed before the
image was saved and is now indeed a "Dead Mac Pointer".  What
I remember is that there was an issue related to holding on
to Hemlock buffers (that may refrence NSDocuments), but I
remembered other symptoms.

Dumb question: where does one find Bosco these days ? (Mikel's site
seems to be down.)

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