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/* Test case contributed by Ingo Rohloff <rohloff@in.tum.de>.

   Code distilled from Linux kernel.  */

/* Compile this program with a gcc-2.95.2 using

   "gcc -O2" and run it. The result will be that

   rx_ring[1].next == 0   (it should be == 14)

   and

   ep.skbuff[4] == 5      (it should be 0)

*/

extern void abort(void);

struct epic_rx_desc

{

  unsigned int next;

};

struct epic_private

{

  struct epic_rx_desc *rx_ring;

  unsigned int rx_skbuff[5];

};

static void epic_init_ring(struct epic_private *ep)

{

  int i;

  for (i = 0; i < 5; i++)

  {

    ep->rx_ring[i].next = 10 + (i+1)*2;

    ep->rx_skbuff[i] = 0;

  }

  ep->rx_ring[i-1].next = 10;

}

static int check_rx_ring[5] = { 12,14,16,18,10 };

int main(void)

{

  struct epic_private ep;

  struct epic_rx_desc rx_ring[5];

  int i;

  for (i=0;i<5;i++)

  {

    rx_ring[i].next=0;

    ep.rx_skbuff[i]=5;

  }

  ep.rx_ring=rx_ring;

  epic_init_ring(&ep);

  for (i=0;i<5;i++)

  {

    if ( rx_ring[i].next != check_rx_ring[i] ) abort();

    if ( ep.rx_skbuff[i] != 0 ) abort();

  }

  return 0;

}