1  /* Test cases of structures with volatile fields declared register:
       2     should be allowed unless register name given but explicitly taking
       3     the address forbidden.  */
       4  /* Origin: Joseph Myers <jsm@polyomino.org.uk> */
       5  
       6  /* { dg-do compile } */
       7  
       8  struct S { volatile int field; };
       9  
      10  void
      11  f (void)
      12  {
      13    register struct S a;
      14    register struct S b[2];
      15    register struct S c __asm__("nosuchreg"); /* { dg-error "object with volatile field" "explicit reg name" } */
      16    &a; /* { dg-error "address of register" "explicit address" } */
      17    b; /* { dg-error "address of register" "implicit address" } */
      18  }