1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-ipa-icf-details"  } */
       3  
       4  struct __hlist_head
       5  {
       6    struct __hlist_node *first;
       7  };
       8  
       9  struct __hlist_node
      10  {
      11    struct __hlist_node *next, **pprev;
      12  };
      13  
      14  struct __net
      15  {
      16    int ifindex;
      17    struct __hlist_head * dev_index_head;
      18  };
      19  
      20  struct __net_device
      21  {
      22    int ifindex;
      23    struct __net *nd_net;
      24    struct __hlist_node index_hlist;
      25  };
      26  
      27  __attribute__ ((noinline, noclone))
      28  static struct __hlist_head * __dev_index_hash(struct __net *net,
      29      int ifindex)
      30  {
      31    return &net->dev_index_head[ifindex & 1];
      32  }
      33  
      34  __attribute__ ((noinline, noclone))
      35  struct __net_device * __dev_get_by_index(struct __net *net, int ifindex)
      36  {
      37    struct __net_device * dev;
      38    struct __hlist_head * head = __dev_index_hash(net, ifindex);
      39  
      40    for (dev = ( { typeof((head)->first) ____ptr = ((head)->first); ____ptr ? ( { const typeof(((typeof(*(dev)) *) 0)->index_hlist) * __mptr = (____ptr); (typeof(*(dev)) *) ((char *)__mptr - __builtin_offsetof(typeof(*(dev)), index_hlist));}): ((void *) 0);});
      41         dev; dev = ( { typeof ((dev)->index_hlist.next) ____ptr = ((dev)->index_hlist.next); ____ptr ? ( { const typeof(((typeof(*(dev)) *) 0)->index_hlist) * __mptr = (____ptr); (typeof(*(dev)) *) ((char *)__mptr - __builtin_offsetof(typeof(*(dev)), index_hlist));}): ((void *) 0);}))
      42      if (dev->ifindex == ifindex)
      43        return dev;
      44  
      45    return ((void *)0);
      46  }
      47  
      48  __attribute__ ((noinline, noclone))
      49  struct __net_device * dev_get_by_index_rcu(struct __net *net, int ifindex)
      50  {
      51    struct __net_device * dev;
      52    struct __hlist_head * head = __dev_index_hash(net, ifindex);
      53  
      54    for (dev = ( { typeof(( { typeof (* ((*((struct __hlist_node **)(&(head)->first))))) * _________p1 = (typeof(*((*((struct __hlist_node **)(&(head)->first))))) *) (*(volatile typeof(((*((struct __hlist_node **)(&(head)->first))))) *)&(((*((struct __hlist_node **)(&(head)->first)))))); do { } while (0);; do { } while (0); ((typeof(*((*((struct __hlist_node **)(&(head)->first))))) *) (_________p1));})) ____ptr = (( { typeof (* ((*((struct __hlist_node **)(&(head)->first))))) * _________p1 = (typeof(*((*((struct __hlist_node **)(&(head)->first))))) *) (*(volatile typeof(((*((struct __hlist_node **)(&(head)->first))))) *)&(((*((struct __hlist_node **)(&(head)->first)))))); do { } while (0);; do { } while (0); ((typeof(*((*((struct __hlist_node **)(&(head)->first))))) *) (_________p1));})); ____ptr ? ( { const typeof(((typeof(*(dev)) *) 0)->index_hlist) * __mptr = (____ptr); (typeof(*(dev)) *) ((char *)__mptr - __builtin_offsetof(typeof(*(dev)), index_hlist));}):((void *) 0);});
      55  	  dev; dev = ( { typeof(( { typeof (* ((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) * _________p1 = (typeof(*((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) *) (*(volatile typeof(((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) *)&(((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next)))))); do { } while (0);; do { } while (0); ((typeof(*((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) *) (_________p1));})) ____ptr = (( { typeof (* ((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) * _________p1 = (typeof(*((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) *) (*(volatile typeof(((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) *)&(((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next)))))); do { } while (0);; do { } while (0); ((typeof(*((*((struct __hlist_node **)(&(&(dev)->index_hlist)->next))))) *) (_________p1));})); ____ptr ? ( { const typeof(((typeof(*(dev)) *) 0)->index_hlist) * __mptr = (____ptr); (typeof(*(dev)) *) ((char *)__mptr - __builtin_offsetof(typeof(*(dev)), index_hlist));}): ((void *) 0);}))
      56  		    if (dev->ifindex == ifindex)
      57  		      return dev;
      58    return ((void *)0);
      59  }
      60  
      61  __attribute__ ((noinline, noclone))
      62  int foo(struct __net *net)
      63  {
      64    if (!__dev_get_by_index(net, net->ifindex));
      65      return 1;
      66    return 0;
      67  }
      68  
      69  int main()
      70  {
      71    return 0;
      72  }
      73  
      74  /* { dg-final { scan-ipa-dump "Equal symbols: 0" "icf"  } } */