gcc/testsuite/gcc.dg/gnu23-empty-init-2.c

   1 /* Test C23 support for empty initializers: invalid use cases with GNU
   2    extensions.  */
   3 /* { dg-do compile } */
   4 /* { dg-options "-std=gnu23" } */
   5
   6 void
   7 f (int a)
   8 {
   9   /* Make sure a non-braced initializer for a VLA-in-struct is still not
  10      allowed.  */
  11   struct s { int x[a]; };
  12   struct s b;
  13   for (int i = 0; i < a; i++)
  14     b.x[i] = 0;
  15   struct s c = b; /* { dg-error "variable-sized object may not be initialized except with an empty initializer" } */
  16 }