Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/fn9.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children | 1830386684a0 |
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// { dg-do run { target c++17 } } // { dg-options "-fconcepts" } #include <cassert> template<typename T> concept bool Class() { return __is_class(T); } template<typename T> concept bool Empty() { return Class<T>() and __is_empty(T); } template<Class T> int f(T) { return 1; } template<Empty T> int f(T) { return 2; } struct S { template<Class T> int f(T) { return 1; } template<Empty T> int f(T) { return 2; } } s; struct X { } x; struct Y { X x; } y; int main () { auto p1 = &f<X>; // Empty f assert(p1(x) == 2); auto p2 = &f<Y>; // Class f assert(p2(y) == 1); auto p3 = &S::template f<X>; // Empty f assert((s.*p3)(x) == 2); auto p4 = &S::template f<Y>; // Empty f assert((s.*p4)(y) == 1); }