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stacks (they grow if needed up to a maximum), so it is strange that is crashes. 
Default IRIX behavior (out of the box) is to have nearly unlimited stackspace 
for each process (ulimit something) so that shouldn't be it. You may want to 
try and replace AllocA() with a malloc() call (but alloca() is conveniently 
freed at the end of a function, so don't forget to add free()s). Will be 
interesting to see if you get this working on IRIX, since I plan a compile on 
there too.

Ruud