Mercurial > hg > CbC > CbC_gcc
comparison gcc/testsuite/g++.dg/cpp2a/concepts-pr68683.C @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
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date | Thu, 13 Feb 2020 11:34:05 +0900 |
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131:84e7813d76e9 | 145:1830386684a0 |
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1 // PR c++/68683 | |
2 // { dg-do compile { target c++2a } } | |
3 | |
4 template <typename, typename> | |
5 struct is_same { | |
6 static constexpr bool value = true; | |
7 }; | |
8 | |
9 template <typename T, typename U> | |
10 concept Same = is_same<T, U>::value; | |
11 | |
12 template <typename T> | |
13 concept Integral = requires { | |
14 { T () } -> Same<typename T::value_type>; | |
15 }; | |
16 | |
17 struct A { | |
18 using value_type = bool; | |
19 }; | |
20 | |
21 int main () { | |
22 Integral<A>; | |
23 Integral<A>; | |
24 return 0; | |
25 } |