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// { dg-do compile }

// { dg-options "-std=c++0x" }

//This error is diagnosed at instantiation time

template struct S1

{

    enum E : T;   // { dg-error "previous definition" }

    enum E : int;     // { dg-error "different underlying type" }

};

template struct S1; // { dg-message "required from here" }

template struct S2

{

    enum E : T;

    enum E : T;

};

template struct S2;

template struct S3

{

    enum E : T1;

    enum E : T2;

};

template struct S3;

template struct S4

{

    enum E : T1; // { dg-error "previous definition" }

    enum E : T2; // { dg-error "different underlying type" }

};

template struct S4; // { dg-message "required from here" }