[Bug c++/96790] New: Indirectly inherited default constructor doesn't zero-initialize

[johelegp at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96790

            Bug ID: 96790
           Summary: Indirectly inherited default constructor doesn't
                    zero-initialize
           Product: gcc
           Version: 11.0
               URL: https://godbolt.org/z/3563e1
            Status: UNCONFIRMED
          Keywords: rejects-valid
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: johelegp at gmail dot com
                CC: johelegp at gmail dot com
  Target Milestone: ---

See the URL.
```C++
struct base0 {
    int x;
    base0() = default;
    constexpr base0(int x) : x{x} { }
};

struct base1 : base0 {
    using base0::base0;
    constexpr base1(void*) : base0{} { }
};

struct derived : base1 { using base1::base1; };

void f() { []() consteval { derived{}.x + 1; }(); }
```