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annotate gcc/testsuite/g++.dg/concepts/pr65854.C @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
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131
84e7813d76e9 gcc-8.2
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1 // { dg-do compile { target c++17 } }
84e7813d76e9 gcc-8.2
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2 // { dg-options "-fconcepts" }
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3
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4 // Handle alias templates in type requirements.
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5
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6 template<typename T1, typename T2>
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7 struct BTT { };
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8
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9 template<typename T>
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10 struct BTT<T,T> { using type = int; };
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11
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12 template<typename T1, typename T2>
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13 using Alias1 = typename BTT<T1, T2>::type;
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14
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15 template<typename T1, typename T2>
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16 concept bool C()
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17 {
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18 return requires() { typename Alias1<T1, T2>; };
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19 }
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20
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21 template<typename T1, typename T2>
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22 requires C<T1, T2>()
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23 int f();
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24
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25 auto i = f<char, int>(); // { dg-error "cannot call function" }