1 #define barrier() __asm__ __volatile__("": : :"memory")
   2 
   3 static void f(void)
   4 {
   5         barrier();
   6 l:
   7         barrier();
   8 }
   9 /*
  10  * check-name: Label followed by __asm__
  11  * check-description: Sparse used to parse the __asm__ as modifying the label.
  12  */