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reset queue on close, so that it won;t be mistaken for an existing queue.

This commit is contained in:
Vítor Santos Costa 2015-10-22 11:53:21 +01:00
parent f1c9952c77
commit 37eae7b70a
1 changed files with 2 additions and 2 deletions
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4
C/globals.c
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@ -1638,8 +1638,8 @@ static Int p_nb_queue_close(USES_REGS1) {
return Yap_unify(ARG3, ARG2);
}
out = Yap_unify(ARG3, qp[QUEUE_TAIL]) && Yap_unify(ARG2, qp[QUEUE_HEAD]);
qp[-1] = (CELL)Yap_MkFunctor(AtomHeap, 1);
qp[QUEUE_ARENA] = qp[QUEUE_HEAD] = qp[QUEUE_TAIL] = MkIntegerTerm(0);
qp[QUEUE_HEAD] = qp[QUEUE_TAIL] = RESET_VARIABLE(qp + QUEUE_TAIL);
qp[QUEUE_SIZE] = MkIntTerm(0);
return out;
}
Yap_Error(INSTANTIATION_ERROR, t, "queue/3");