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111
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1 // { dg-do compile { target c++11 } }
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2 template<typename... Args>
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3 struct tuple_base {
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4 static const int value = 0;
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5 };
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6
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7 template<>
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8 struct tuple_base<int> {
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9 static const int value = 1;
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10 };
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11
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12 template<>
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13 struct tuple_base<int, float> {
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14 static const int value = 2;
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15 };
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16
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17 template<>
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18 struct tuple_base<float, int> {
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19 static const int value = 3;
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20 };
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21
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22 template<typename... Args>
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23 struct int_tuple : tuple_base<int, Args...> { };
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24
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25 template<typename... Args>
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26 struct tuple_int : tuple_base<Args..., int> { };
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27
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28 int a0a[int_tuple<int>::value == 0? 1 : -1];
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29 int a0b[int_tuple<int>::value == 0? 1 : -1];
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30 int a1a[int_tuple<>::value == 1? 1 : -1];
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31 int a1b[tuple_int<>::value == 1? 1 : -1];
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32 int a2[int_tuple<float>::value == 2? 1 : -1];
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33 int a3[tuple_int<float>::value == 3? 1 : -1];
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