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From: "ensadc at mailnesia dot com" <gcc-bugzilla@gcc.gnu.org>
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Date: Wed, 08 Apr 2020 13:43:03 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94490

ensadc at mailnesia dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ensadc at mailnesia dot com

--- Comment #2 from ensadc at mailnesia dot com ---
reduced & modified:

```
template<class T>
constexpr int fake_tuple_size_v =3D 3;
template<int...> struct intseq {};
template<int N> using genseq =3D intseq<__integer_pack(N)...>;

template<int A, class S =3D genseq<0 ? A : A>>
struct arith_result
{ };

template<typename T>
auto Mul(const T&)
{
    return [](auto) { return arith_result<fake_tuple_size_v<T>> { }; }(0);
}

auto x =3D Mul(0);
```=