1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <locale> 11 12 // template <class Facet> bool has_facet(const locale& loc) throw(); 13 14 #include <locale> 15 #include <cassert> 16 17 struct my_facet 18 : public std::locale::facet 19 { 20 static std::locale::id id; 21 }; 22 23 std::locale::id my_facet::id; 24 25 int main() 26 { 27 std::locale loc; 28 assert(std::has_facet<std::ctype<char> >(loc)); 29 assert(!std::has_facet<my_facet>(loc)); 30 std::locale loc2(loc, new my_facet); 31 assert(std::has_facet<my_facet>(loc2)); 32 } 33
