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annotate gcc/testsuite/g++.dg/concepts/req16.C @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children 84e7813d76e9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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111
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1 // PR c++/66988
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2 // { dg-options "-std=c++17 -fconcepts" }
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3
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4 #include <type_traits>
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5
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6 template <template <class> class T, class U>
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7 concept bool _Valid = requires { typename T<U>; };
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8
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9 template <class T>
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10 using __t = typename T::type;
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11
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12 template <class T>
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13 struct __has_type : std::false_type { };
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14
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15 template <class T>
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16 requires _Valid<__t, T>
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17 struct __has_type<T> : std::true_type { };
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18
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19 static_assert(!__has_type<int>(), "");