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annotate gcc/testsuite/g++.dg/concepts/var-templ2.C @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
parents 84e7813d76e9
children
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1 // PR c++/67139
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1830386684a0 gcc-9.2.0
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2 // { dg-do compile { target c++17_only } }
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3 // { dg-options "-fconcepts" }
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5 template <class T>
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6 constexpr typename T::type::value_type _v = T::type::value;
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8 template <class T> concept bool IsTrue_() { return _v<T>; }
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10 template <class T> concept bool Unpossible() {
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11 return IsTrue_<T &&>();
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12 }
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14 template <class> constexpr bool unpossible() { return false; }
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15 Unpossible{ T }
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16 constexpr bool unpossible() { return true; }
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18 static_assert((!unpossible<void>()), "");