[Bug c++/123790] GCC doesn't initializer constexpr pointer variable of type std::nullptr_t with another nullptr

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123790

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2026-01-23
                 CC|                            |mpolacek at gcc dot gnu.org

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.  I guess we need something similar to what I added recently:

        /* This can happen for std::meta::info(^^int) where the cast has no
           meaning.  */
        if (REFLECTION_TYPE_P (type) && REFLECT_EXPR_P (op)) 
          {     
            r = op; 
            break;
          }

but with

  if (NULLPTR_TYPE_P (type) && null_ptr_cst_p (op))