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// { dg-options "-std=gnu++0x" } template<typename... Values> struct tuple { static const __SIZE_TYPE__ length = sizeof...(Values); }; int a0[tuple<>::length == 0? 1 : -1]; int a1[tuple<int>::length == 1? 1 : -1]; int a2[tuple<int, float>::length == 2? 1 : -1];