1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <locale> 10 11 // template <class Facet> bool has_facet(const locale& loc) throw(); 12 13 #include <locale> 14 #include <cassert> 15 16 #include "test_macros.h" 17 18 struct my_facet 19 : public std::locale::facet 20 { 21 static std::locale::id id; 22 }; 23 24 std::locale::id my_facet::id; 25 main(int,char **)26int main(int, char**) 27 { 28 std::locale loc; 29 assert(std::has_facet<std::ctype<char> >(loc)); 30 assert(!std::has_facet<my_facet>(loc)); 31 std::locale loc2(loc, new my_facet); 32 assert(std::has_facet<my_facet>(loc2)); 33 34 return 0; 35 } 36