gcc/testsuite/gcc.dg/array-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "" } */
   3
   4 /* ISO C99 flexible array members don't have a size.  GCC's zero-length
   5    array extension does.  */
   6
   7 struct f { int w; int x[0]; } f;
   8 struct g { int w; int x[]; } g;
   9
  10 char test_gcc[sizeof (f.x) ? -1 : 1];
  11 char test_iso[sizeof (g.x) ? -1 : 1]; /* { dg-error "incomplete type" "iso" } */