--- mcharity(a)vendian.org wrote:

Others will no doubt provide a better answer, but just to get you unstuck, I note that this no-op kludge

run_list([Arg|Args]) :- name(Arg,ArgStr), name(ArgN,ArgStr), % Kludge fibo(ArgN,Val), write(Val), nl, halt.

works around the problem on my Ciao-Prolog 1.9 #344.

This worked for me as well!

I applied the change last night, but neglected to re-run the "hello, world" test (so it shows as a failure).

At any rate, even though we are asking Ciao to perform a task it is not designed for (i.e., a heavily-recursive function written in such a way that last-call elimination is not feasible), it still manages to perform better than PHP, Perl, Python, Slang, and Icon.[1] Not bad!

-Brent

[1] see http://shootout.alioth.debian.org/bench/ackermann

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