GNAT GPL for Mac OSX stack checking problem

["Kevin K" <kevink4@gmail.com>]

I've downloaded the new 2005 GPL edition for the Mac (of which I am 
NOT an expert, having the computer for only 2 weeks).

I wrote a test program using tasks, namely a program with 10 tasks, of
10Meg each.

However, even when compiled with the -fstack-check option, not only is
the virtual memory usage not anywhere close to the the 100meg 
expected, but when run, when I attempt to get a storage_error, I get 
an illegal instruction instead.

This same test procedure compiled on the Linux version of Gnat 2005, 
running Centos4, runs as expected.

I guess the question is what is the maximum stack size of a task under
OSX?  (10.4 with all available patches)

Is there a missing option I need to do when compiling or linking under
OSX?  I know that Windows has some special options.

The test driver is available for posting.

Thanks,
Kevin

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