gcc/testsuite/gcc.dg/pr27301.c

   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 }