1  /* PR c/27301 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -std=gnu89" } */
       4  /* { dg-require-effective-target alloca } */
       5  
       6  void
       7  foo (void *ptr, long n)
       8  {
       9    __asm__ __volatile__ ("" :: "m" (({ struct { char x[n]; } *p = ptr; *p; })));
      10  }
      11  
      12  void
      13  bar (void *ptr, long n)
      14  {
      15    __asm__ __volatile__ ("" :: "m" (*({ struct { char x[n]; } *p = ptr; p; })));
      16  }