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1 // PR c++/69694
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2 // This is a reduced version of decltype74.C.
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3 // { dg-do compile { target c++11 } }
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4
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5 template<typename... Ts> using void_t = void;
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6
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7 extern void *declval_void;
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8
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9 template<typename, typename> struct Fun { };
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10
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11 template<typename Desc>
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12 struct Fun<Desc, void_t<decltype (declval_void = Desc::name)>>
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13 {
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14 void fun();
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15 };
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16
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17 struct Tag { static constexpr void* name = 0; };
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18
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19 template<typename> void a()
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20 {
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21 Fun<Tag, void>{}.fun();
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22 }
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23
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24 void b() { a<int>(); }
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