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

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