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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/110961] internal compiler error: segmentation fault
Date: Fri, 10 Nov 2023 07:24:15 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110961

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2023-11-10
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The smallest I could get right now:
```
namespace std {
typedef long unsigned int size_t;
template <bool _Cond, typename _Iftrue, typename _Iffalse> struct condition=
al
{};
template <bool _Cond, typename _Iftrue, typename _Iffalse>
using conditional_t =3D typename conditional<_Cond, _Iftrue, _Iffalse>::typ=
e;
template <typename _Tp>
inline constexpr size_t tuple_size_v =3D tuple_size<_Tp>::value;
template <typename... Ts>
 struct DispatchTable {
using Typ =3D std::conditional_t<true,
  decltype([]<auto... Idx>(std::index_sequence<Idx...>)
{}(std::make_index_sequence<sizeof...(Ts) - 1>{})),
  int>;
template <typename T, auto SZ =3D std::tuple_size_v<Typ>>
static auto constexpr TypeIndex =3D detail::TypeIndexImpl<T, Ts...>();
static constexpr typename Ext::value_type BatchSize =3D Sizes[TypeIndex<T>];

```

The above is an ICE after errors but I suspect this is the same as the other
decltype of a lambda issues too.=