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1 // PR c++/66850
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2 // Each namespace contains an otherwise standalone test case, none of which
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3 // should cause an ICE.
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4
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5 namespace X {
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6 template <template <typename U, U> class> struct Sort;
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7
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8 template <template <typename U, U> class Comparator>
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9 struct Sort
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10 {
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11 template <int I>
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12 struct less_than
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13 {
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14 Comparator<int, I> a;
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15 };
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16 };
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17 }
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18
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19 namespace Y {
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20 template <typename C, C> struct integral_constant {};
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21
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22 template <typename T, template <typename U, U> class> struct Sort;
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23
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24 template <template <typename U, U> class Comparator>
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25 struct Sort<int, Comparator>
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26 {
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27 template <int I> struct less_than:
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28 integral_constant<bool, Comparator<int, I>::value> {};
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29 };
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30 }
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31
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32 namespace Z {
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33 template <typename T, template <typename U, U> class> struct Sort;
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34
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35 template <template <typename U, U> class Comparator>
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36 struct Sort<int, Comparator>
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37 {
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38 template <int I>
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39 struct less_than
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40 {
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41 Comparator<int, I> a;
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42 };
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43 };
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44 }
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