// Copyright (C) 2019 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING3. If not see // . // { dg-options "-std=gnu++2a" } // { dg-do compile { target c++2a } } #include #include // { dg-error "invalid conversion" "" { target *-*-* } 0 } // { dg-prune-output "in 'constexpr' expansion" } void test01() { { struct Visitor { double operator()(double) {return 0.02;} void operator()(int) {} }; std::variant v; std::visit(Visitor(), v); } } int main() { test01(); }