Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp2a/concepts-partial-spec6.C @ 158:494b0b89df80 default tip
...
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
---|---|
date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 1830386684a0 |
children |
line wrap: on
line source
// PR c++/67152 // { dg-do compile { target c++2a } } template <class T> concept HasType = requires { typename T::type; }; template<class T> struct trait { using type = void; }; struct has_type { using type = void; }; // Instantiation here trait<has_type>::type foo() {} // constrained version here. Type "has_type" would fail this // constraint so this partial specialization would not have been // selected. template<class T> requires (!HasType<T>) struct trait<T> { using type = void; };