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annotate gcc/testsuite/g++.dg/cpp2a/concepts-pr68683.C @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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145
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1 // PR c++/68683
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2 // { dg-do compile { target c++2a } }
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3
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4 template <typename, typename>
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5 struct is_same {
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6 static constexpr bool value = true;
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7 };
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8
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9 template <typename T, typename U>
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10 concept Same = is_same<T, U>::value;
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11
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12 template <typename T>
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13 concept Integral = requires {
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14 { T () } -> Same<typename T::value_type>;
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15 };
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16
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17 struct A {
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18 using value_type = bool;
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19 };
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20
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21 int main () {
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22 Integral<A>;
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23 Integral<A>;
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24 return 0;
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25 }