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extern void abort (void);
struct delay_block {
struct delay_block *succ;
};
static struct delay_block Timer_Queue;
struct delay_block* time_enqueue (struct delay_block *d)
{
struct delay_block *q = Timer_Queue.succ;
d->succ = (void *)0;
return Timer_Queue.succ;
}
int main(void)
{
Timer_Queue.succ = &Timer_Queue;
if (time_enqueue (&Timer_Queue) != (void*)0)
abort ();
return 0;
}
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