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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/96282] [8/9/10/11 Regression] internal compiler error: in
 output_constructor_regular_field
Date: Wed, 29 Jul 2020 09:07:57 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96282

Martin Li=C5=A1ka <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|needs-bisection,            |
                   |needs-reduction             |
                 CC|                            |marxin at gcc dot gnu.org

--- Comment #4 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
Reduced test-case:

#include <array>

template <typename T, typename Ix, Ix Size>
class Pen : std::array<T, Size> {
  typedef std::array<T, Size> arr;
public:
  // Removing either "constexpr" or ": arr()" from the following
  // line seems to work around the problem.
  constexpr Pen() : arr() { }
};

class Farm {
public:
  enum Sheep { BAA, ZZZ };

  template<typename T>
  using SheepPen =3D Pen<T, Sheep, ZZZ>;
};

class Fence {
public:
  constexpr Fence() { length =3D 12; }
  int length =3D 0;
};

void
cull() {
  static Farm::SheepPen<Fence> s;
}

Will you look at it Richi?=