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111
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1 // PR c++/52422
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2 // { dg-do compile { target c++11 } }
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3
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4 template<class T>
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5 struct add_rval_ref
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6 {
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7 typedef T&& type;
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8 };
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9
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10 template<>
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11 struct add_rval_ref<void>
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12 {
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13 typedef void type;
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14 };
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15
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16 template<class T>
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17 typename add_rval_ref<T>::type create();
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18
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19 template<class T, class U,
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20 class = decltype( (create<T>().*create<U>())() )
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21 >
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22 auto f(int) -> char(&)[1];
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23
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24 template<class, class>
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25 auto f(...) -> char(&)[2];
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26
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27 static_assert(sizeof(f<void, void>(0)) != 1, "");
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