gcc/testsuite/c-c++-common/auto-init-13.c

   1 /* Verify the auto initialization of structure or union with a flexible array
   2    member.  */
   3 /* { dg-do compile } */
   4 /* { dg-options "-ftrivial-auto-var-init=pattern -fdump-tree-gimple" } */
   5
   6 struct a {
   7   int b;
   8   int array[];
   9 };
  10 union tar {
  11   struct a bar;
  12   char buf;
  13 };
  14
  15 int foo()
  16 {
  17   struct a d;
  18   union tar var;
  19   return d.b + var.bar.b;
  20 }
  21
  22 /* { dg-final { scan-tree-dump "d = .DEFERRED_INIT \\(4, 1, \&\"d\"" "gimple" } } */
  23 /* { dg-final { scan-tree-dump "var = .DEFERRED_INIT \\(4, 1, \&\"var\"" "gimple" } } */