gcc/testsuite/gcc.dg/gnu23-tag-composite-3.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -std=gnu23" } */
   3
   4 // struct with variably-modified member
   5
   6 struct s { char (*y)[]; } s;
   7
   8 int
   9 foo ()
  10 {
  11         int n = 10;
  12         struct s { char (*y)[n]; } t;
  13         typeof(*(1 ? &s : &t)) u;
  14         return sizeof(*u.y);
  15 }
  16
  17 int main()
  18 {
  19         if (10 != foo())
  20                 __builtin_abort();
  21
  22         return 0;
  23 }
  24