shift_set = bitset_create (ntokens, BITSET_FIXED);
look_ahead_set = bitset_create (ntokens, BITSET_FIXED);
obstack_init (&solved_conflicts_obstack);
shift_set = bitset_create (ntokens, BITSET_FIXED);
look_ahead_set = bitset_create (ntokens, BITSET_FIXED);
obstack_init (&solved_conflicts_obstack);