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20 #define EXTRA_SPACE_HEAD 8
107 if (pos < q->count - 1)
119 if (pos < q->count - 1)
130 if (pos < q->count - 2)
143 if (pos == q->
count - 1)
149 if (pos < q->count - 2)
182 if (n <= 0 || pos >= q->
count)
184 if (pos + n >= q->
count)