[Bug c++/92812] Implement P1975R0: Fixing the wording of parenthesized aggregate-initialization

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92812

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This already works:

// P1975R0

struct Aggr { int x; int y; };

int
main ()
{
  Aggr a = static_cast<Aggr>(1);
  if (a.x != 1 || a.y != 0)
    __builtin_abort ();
}

but we generate

q.C: In function ‘int main()’:
q.C:8:31: warning: missing initializer for member ‘Aggr::y’
[-Wmissing-field-initializers]
    8 |   Aggr a = static_cast<Aggr>(1);
      |