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// PR c++/91673 - ICE with noexcept in alias-declaration. // { dg-do compile { target c++17 } } template<typename Sig> struct overload; template<typename Ret, typename... Args, bool NoExcept> struct overload<Ret(Args...) noexcept(NoExcept)> { using signature_t = Ret(Args...) noexcept(NoExcept); }; overload<void()> x;