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From: "ldalessandro at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/105912] internal compiler error: in extract_call_expr, at
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Date: Thu, 09 Jun 2022 20:38:55 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105912

--- Comment #1 from Luke Dalessandro <ldalessandro at gmail dot com> ---
Somewhat reduced testcase:

    template <wchar_t> struct A {};
    template <wchar_t> struct B {};

    template <wchar_t a>
    static consteval auto operator~(A<a>) -> B<a> {
        return {};
    }

    A<'i'> i;

    template <class>
    auto test() -> bool {
        auto ii =3D ~i;      // ICE HERE
        return true;
    }

    int main()
    {
        bool i =3D test<int>();
    }

https://godbolt.org/z/rEf4neexc=