Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp2a/concepts-alias.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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// { dg-do compile { target c++2a } } template<typename T> concept Class = __is_class(T); template<typename T> requires Class<T> using X = T*; template<typename T> using Y = X<T>; // { dg-error "constraint" } template<Class T> using Z = T*; struct S { }; X<S> x1; // OK X<int> x2; // { dg-error "template constraint failure" } Y<int> y1; // { dg-message "" } Z<S> z1; // ok