1  // { dg-do run }
       2  // { dg-additional-options "-fdump-tree-gimple" }
       3  
       4  int *ptr;
       5  
       6  struct a
       7  {
       8    int c;
       9  };
      10  
      11  int main(int argc, char **argv)
      12  {
      13    struct a e;
      14    e.c = 2;
      15    int x = 0;
      16  
      17    for (;;)
      18      switch (e.c)    
      19        case 3:
      20  	{
      21  	  int resxxx;
      22  	case 2:
      23  	  ptr = &resxxx;
      24  	  *ptr = 123;
      25  
      26  	  if (x)
      27  	    return 0;
      28  	  else
      29  	    x = 1;
      30  	}
      31  
      32    return 1;
      33  }
      34  
      35  /* { dg-final { scan-tree-dump-times "ASAN_MARK \\(UNPOISON, &resxxx, \[0-9\]\\);" 2 "gimple" } }  */