[Bug c++/106788] New: GCC rejects valid program involving initialization of array in member initializer list

[Bug c++/106788] New: GCC rejects valid program involving initialization of array in member initializer list

[jlame646 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106788

            Bug ID: 106788
           Summary: GCC rejects valid program involving initialization of
                    array in member initializer list
           Product: gcc
           Version: 9.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jlame646 at gmail dot com
  Target Milestone: ---

The following valid program is rejected by gcc 9.3 but accepted by gcc 9.4 and
onwards. Demo link: https://godbolt.org/z/KT3GWP677

```

struct A {
  A(int aa) : a(aa) {}

  A(const A &a) = delete;
  A &operator=(const A &a) = delete;

private:
  int a;
  std::vector<int> v;
};


struct B2 {
  B2()
    : a2{{1}, {2}} // -> error: use of deleted function 'A::A(const A&)' (gcc
9.3)
  {} 

private:
  A a2[2];
};

```

[Bug c++/106788] GCC rejects valid program involving initialization of array in member initializer list

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106788

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2022-08-31
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I wonder what's the bug?  It seems the bug is fixed in gcc 9.4?

[Bug c++/106788] GCC rejects valid program involving initialization of array in member initializer list

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106788

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |DUPLICATE
                 CC|                            |marxin at gcc dot gnu.org

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed with r11-6733-gcd09079cfd50d289 on master branch.

*** This bug has been marked as a duplicate of bug 63707 ***

[Bug c++/106788] GCC rejects valid program involving initialization of array in member initializer list

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106788

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jason Liam from comment #0)
> The following valid program is rejected by gcc 9.3 but accepted by gcc 9.4
> and onwards. Demo link: https://godbolt.org/z/KT3GWP677

The oldest supported release is 10.4, so reporting bugs that are only present
in releases older than that is not useful. There's nothing to fix, it already
works in all supported branches.