(j3.2006) COPY mode of argument association

[Lionel, Steve]

"The solution was to pass the location of the child vertex back as a
function argument.  I hope processors don't calculate the address of the
function result and pass that as a hidden argument for the function to use
to store its result value."

Why, yes, they do. On the implementations I am familiar with, this happens
if the result is of a type other than what the ABI says should be returned
in registers. For example, returning any array or CHARACTER value would be
done with a hidden argument containing an address of temporary storage
computed by the caller.

I didn't fully understand the problem statement, but it seemed to me that
pointers might be an appropriate solution.

Steve

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