Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/explicit-spec4.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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// { dg-do run { target c++17 } } // { dg-options "-fconcepts" } #include <cassert> template<typename T> concept bool C() { return __is_class(T); } template<typename T> concept bool D() { return C<T>() && __is_empty(T); } struct X { } x; struct Y { int n; } y; int called = 0; template<typename T> struct S { void f() { called = 0; } // #1 void f() requires C<T>() { called = 0; } // #2 void g() requires C<T>() { } // #1 void g() requires D<T>() { } // #2 }; template<> void S<int>::f() { called = 1; } // Spec of #1 template<> void S<X>::f() { called = 2; } // Spec of #2 template<> void S<X>::g() { called = 3; } // Spec of #2 template<> void S<Y>::g() { called = 4; } // Spec of #1 int main() { S<double> sd; S<int> si; S<X> sx; S<Y> sy; sd.f(); assert(called == 0); si.f(); assert(called == 1); sx.f(); assert(called == 2); sy.f(); assert(called == 0); sx.g(); assert(called == 3); sy.g(); assert(called == 4); }