[Bug c++/102123] Internal Compiler Error occurs during template deduction in use with templates as template parameters

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102123

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
template<template<typename...> typename Template, typename... Args>
struct _dummy_forwarder {
    using type = Template<Args...>;
};

template<template<typename...> typename Template, typename... Args>
using dummy_forwarder = typename _dummy_forwarder<Template, Args...>::type;

template<typename T>
struct Test {
    template<typename U> using _dummy = U; 

    using Element = dummy_forwarder<_dummy, T>;

    Element _elem;

    constexpr Test(const Element elem) : _elem(elem) { }
};

template<typename T>
Test(T) -> Test<T>;

consteval void test() {
    const auto t = Test(1);
}