gcc/testsuite/gcc.dg/torture/pr51071-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fno-delete-null-pointer-checks" } */
   3
   4 __extension__ typedef __UINTPTR_TYPE__ uintptr_t;
   5
   6 extern struct module __this_module;
   7 static inline void
   8 trace_module_get  (struct module *mod, uintptr_t ip) { }
   9 struct module;
  10 int module_is_live (struct module *);
  11 static inline __attribute__((no_instrument_function))
  12 int try_module_get(struct module *module)
  13 {
  14   int ret = 1;
  15   if (module)
  16     {
  17       if (module_is_live(module))
  18         {
  19           __label__ __here;
  20           asm("");
  21           __here:
  22           trace_module_get(module, (uintptr_t)&&__here);
  23         }
  24       else
  25         ret = 0;
  26     }
  27   return ret;
  28 }
  29 struct net_device;
  30 struct net_device_ops {
  31     int (*ndo_open)(struct net_device *dev);
  32 };
  33 int hdlc_open (struct net_device *);
  34 int t3e3_open(struct net_device *dev)
  35 {
  36   int ret = hdlc_open(dev);
  37   if (ret)
  38     return ret;
  39   try_module_get((&__this_module));
  40   return 0;
  41 }
  42 const struct net_device_ops t3e3_ops = { .ndo_open = t3e3_open };