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// { dg-do compile { target c++11 } }

template<typename T> struct S1
{
    struct S2
    {
        // opaque enum declarations
        enum class E1;
        enum class E2 : T;
        enum class E3 : short;
        enum E4 : T;
        enum E5 : short;

        // can be repeated
        enum class E1;
        enum class E2 : T;
        enum class E3 : short;
        enum E4 : T;
        enum E5 : short;
    };

    // are complete so we can declare variables
    typename S2::E1 b1;
    typename S2::E2 b2;
    typename S2::E3 b3;
    typename S2::E4 b4;
    typename S2::E5 b5;

    //even with elaborated-type-specifiers
    enum S1::S2::E1 a1;
    enum S1::S2::E2 a2;
    enum S1::S2::E3 a3;
    enum S1::S2::E4 a4;
    enum S1::S2::E5 a5;

    // and the list can be added later
    enum class S1::S2::E1 { e11, e12 };
    enum class S1::S2::E2 : T { e21, e22 };
    enum class S1::S2::E3 : short {e31, e32 };
    enum S1::S2::E4 : T { e41, e42 };
    enum S1::S2::E5 : short { e51, e52 };
};

template struct S1<int>;