Mercurial > hg > CbC > CbC_gcc

comparison gcc/testsuite/g++.dg/cpp2a/concepts4.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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131:84e7813d76e9 145:1830386684a0
1 // { dg-do compile { target c++2a } }
2
3 template <class T> struct A { static const int x = 42; };
4
5 template <class Ta> concept A42 = A<Ta>::x == 42;
6 template <class Tv> concept Void = __is_same_as(Tv, void);
7 template <class Tb, class Ub> concept A42b = Void<Tb> || A42<Ub>;
8 template <class Tc> concept R42c = A42b<Tc, Tc&>;
9
10 static_assert (R42c<void>);