[Bug c++/74762] [5/6/7 Regression] Uncaught Wuninitialized case

["manu at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=74762

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-08-12
                 CC|                            |manu at gcc dot gnu.org
          Component|middle-end                  |c++
     Ever confirmed|0                           |1

--- Comment #2 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
A simpler testcase without infinite recursion:

struct tree2;
struct tree_vector2
{
  tree2 *elts[1];
};
struct tree2
{
  struct
  {
    tree_vector2 vector;
  } u;
};
tree2 *
const_with_all_bytes_same (tree2 *val)
{
  int i;
  return ((val->u.vector.elts[i]));
}

And I would say this is a C++ problem, but unfortunately, it is a problem
throughout GCC of abusing TREE_NO_WARNING.