[Bug c++/123805] [c++20] array initialization with Parentheses from an array with the same type (and bounds) not declaying to void* too

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123805

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2026-01-24
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.

I think the problem is here:
          /* Must arrange to initialize each element of EXP
             from elements of INIT.  */
          if (cv_qualified_p (type))
            TREE_TYPE (exp) = cv_unqualified (type);
          if (itype && cv_qualified_p (itype))
            TREE_TYPE (init) = cv_unqualified (itype);
          from_array = (itype && same_type_p (TREE_TYPE (init),
                                              TREE_TYPE (exp)));

          if (init && !BRACE_ENCLOSED_INITIALIZER_P (init)
              && (!from_array
                  || (TREE_CODE (init) != CONSTRUCTOR
                      /* Can happen, eg, handling the compound-literals
                         extension (ext/complit12.C).  */
                      && TREE_CODE (init) != TARGET_EXPR)))
            {
              if (complain & tf_error)
                error_at (init_loc, "array must be initialized "
                          "with a brace-enclosed initializer");
              return error_mark_node;
            }

from_array is true But in this case a can decay to a pointer type and void*
accepts all pointer types ...

So what I think needs to happen is the check on from_array  needs to see if the
inner type for exp is void*.