error out of global stack prolog

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Newsgroups gmane.comp.ai.prolog.swi
Message-ID <CAAR9AEmy4yOPYKOnNx4=9bb-wRT7BWoWbNWasNfKs2KGAC3qSw@mail.gmail.com>
Hi, I am currently learning Prolog. when I apply a query such as
 findall(A, rdf(A,_,_), Y), length(Y, L), prolog throws out of global
stack, error. How could I fix this problem?

Thank you,
Batselem Jagvaral




2 ?- findall(A, rdf(A,_,_), Y), length(Y, L).ERROR: Out of global stack
   Call: (13) rdf_db:rdf_update_duplicates_thread ? No previous search
   Call: (13) rdf_db:rdf_update_duplicates_thread ? No previous search
   Call: (13) rdf_db:rdf_update_duplicates_thread ? creep
^  Call: (14) thread_create(rdf_update_duplicates, _G75, [detached(true),
alias('__rdf_duplicate_detecter')]) ? creep
^  Exit: (14) thread_create(rdf_update_duplicates,
'__rdf_duplicate_detecter', [detached(true),
alias('__rdf_duplicate_detecter')]) ?
   Call: (1) rdf_db:rdf_update_duplicates ? creep
|:
   Exit: (13) rdf_db:rdf_update_duplicates_thread ?
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