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

template struct is_same {

  static const bool value = false;

};

template struct is_same {

  static const bool value = true;

};

template struct Tuple {};

template struct Pair {};

template

  struct zip {

    template

    struct with {

      typedef Tuple...> type; // { dg-error "mismatched argument pack" }

    };

  };

static_assert

  (is_same::with::type,

           Tuple, Pair > >::value,

   "zip");

typedef zip::with::type T2; // error: different number of arguments specified

                                                             // for Args1 and Args2

template void f(Args...);

template void g(Args... args)

{

   f(const_cast(&args)...); // okay: ``Args'' and ``args'' are expanded

   f(5 ...); // { dg-error "contains no argument packs" }

   f(args); // { dg-error "parameter packs not expanded" }

   // { dg-message "args" "note" { target *-*-* } 36 }

   f(h(args...) + args...); // okay: first ``args'' expanded within h, second ``args'' expanded within f.

}