Ok, I'm running a few tests this am, mind perhaps there are no OS-X  
OSProcessPlugin users out there?
however thank you for taking the time to look into this.

First I went in and mangled MacOSProcessAccessor and MacProcess to  
remove the overrides for access to unix superclass logic
then I prim failed the forksqueak prim call, and made the suggested  
change to UnixOSProcessAccessor>>canForwardExternalSignals

Testing

UnixProcessAccessorTestCase>testIsExecutableForUserInGroup
accessor isExecutable: '/tmp/delete.me'
					forUser: 99999
					inGroup: accessor primGetGid
fails, but I'll note:
-r-xr-x---   1 johnmci  wheel  0 Mar  4 13:47 /tmp/delete.me

testIsReadableForUserInGroup
didn't look likely related to above
testIsWriteableForUserInGroup
didn't look likely related to above

testChDir
for this accessor primGetCurrentWorkingDirectory
returns /private/tmp on the mac

UnixProcessFileLockingtestCase
wants to fork a headless squeak....
They all fail then...

UnixProcessFileLockTestcase
They all RUN (GREEN)

UnixProcessTestCase
5 run, 13 error because they all attempt to fork a squeak vm.

Likely I should look at the ancient  code for headless squeak, if  
there is any visible demand?

On 4-Mar-06, at 7:28 AM, David T. Lewis wrote:

> On Thu, Mar 02, 2006 at 12:33:02AM -0800, John M McIntosh wrote:
>> ok, after some clues from David I built a mostly broken unix vm,
>> however it was enough to build a OSProcessPlugin as a side effect.
>>
>> In testing I see that calling primitiveForkSqueakWithoutSigHandler
>> crashes things, I'll suspect forking the carbon vm is a no no.
>
> Hi John,
>
> If you have a chance, could you please try something for me?
> Change the method UnixOSProcessAccessor>>canForwardExternalSignals
> to answer false, then save your image and restart.

--
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John M. McIntosh <johnmci at smalltalkconsulting.com> 1-800-477-2659
Corporate Smalltalk Consulting Ltd.  http://www.smalltalkconsulting.com
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