gcc/testsuite/gcc.dg/torture/20210916.c

   1 /* { dg-do compile } */
   2
   3 typedef union tree_node *tree;
   4 struct tree_base {
   5   unsigned : 1;
   6   unsigned lang_flag_2 : 1;
   7 };
   8 struct tree_type {
   9   tree main_variant;
  10 };
  11 union tree_node {
  12   struct tree_base base;
  13   struct tree_type type;
  14 };
  15 tree finish_struct_t, finish_struct_x;
  16 void finish_struct()
  17 {
  18   for (; finish_struct_t->type.main_variant;)
  19     finish_struct_x->base.lang_flag_2 = 0;
  20 }