1  struct A { unsigned long buf[100]; };
       2  int foo(unsigned int *x)
       3  {
       4    unsigned int a;
       5  
       6    if (!x)
       7      return -22;
       8  
       9  #ifdef __ia64__
      10    if (({
      11      register long b asm ("r8") = 0;
      12      register long c asm ("r9") = 0;
      13      asm ("" : "=r"(c), "=r"(b) : "m"(*(struct A *)x), "1"(b));
      14      a = (unsigned int) c;
      15      b; }))
      16      return -14;
      17  #endif
      18  
      19    return 0;
      20  }