C++ (Cpp) dfs_walk_once Examples

Example #1

File: cp-ubsan.c Project: VitalElement/gcc

void
cp_ubsan_maybe_initialize_vtbl_ptrs (tree addr)
{
  if (!cp_ubsan_instrument_vptr_p (NULL_TREE))
    return;

  tree type = TREE_TYPE (TREE_TYPE (addr));
  tree list = build_tree_list (type, addr);

  /* Walk through the hierarchy, initializing the vptr in each base
     class to NULL.  */
  dfs_walk_once (TYPE_BINFO (type), cp_ubsan_dfs_initialize_vtbl_ptrs,
		 NULL, list);
}

Example #2

File: cp-ubsan.c Project: KangDroid/gcc

void
cp_ubsan_maybe_initialize_vtbl_ptrs (tree addr)
{
  if (!cp_ubsan_instrument_vptr_p (NULL_TREE))
    return;

  tree type = TREE_TYPE (TREE_TYPE (addr));
  tree list = build_tree_list (type, addr);
  /* We cannot rely on the vtable being set up.  We have to indirect via the
     vtt_parm.  */
  int save_in_base_initializer = in_base_initializer;
  in_base_initializer = 1;

  /* Walk through the hierarchy, initializing the vptr in each base
     class to NULL.  */
  dfs_walk_once (TYPE_BINFO (type), cp_ubsan_dfs_initialize_vtbl_ptrs,
		 NULL, list);

  in_base_initializer = save_in_base_initializer;
}