110 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// XFAIL: availability-char8_t_support-missing10 11// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.12// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS13 14// <locale>15 16// template <class Facet> locale combine(const locale& other) const;17 18#include <locale>19#include <stdexcept>20#include <cassert>21 22#include "count_new.h"23 24#include "test_macros.h"25 26template<class CharT>27void check_for(const std::locale& loc)28{29 assert(std::has_facet<std::collate<CharT> >(loc));30 31 assert(std::has_facet<std::ctype<CharT> >(loc));32 33 assert((std::has_facet<std::codecvt<CharT, char, std::mbstate_t> >(loc)));34 35 assert(std::has_facet<std::moneypunct<CharT> >(loc));36 assert(std::has_facet<std::money_get<CharT> >(loc));37 assert(std::has_facet<std::money_put<CharT> >(loc));38 39 assert(std::has_facet<std::numpunct<CharT> >(loc));40 assert(std::has_facet<std::num_get<CharT> >(loc));41 assert(std::has_facet<std::num_put<CharT> >(loc));42 43 assert(std::has_facet<std::time_get<CharT> >(loc));44 assert(std::has_facet<std::time_put<CharT> >(loc));45 46 assert(std::has_facet<std::messages<CharT> >(loc));47}48 49void check(const std::locale& loc)50{51 check_for<char>(loc);52#ifndef TEST_HAS_NO_WIDE_CHARACTERS53 check_for<wchar_t>(loc);54#endif55 56 assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));57 assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));58#if TEST_STD_VER > 1759 assert((std::has_facet<std::codecvt<char16_t, char8_t, std::mbstate_t> >(loc)));60 assert((std::has_facet<std::codecvt<char32_t, char8_t, std::mbstate_t> >(loc)));61#endif62}63 64struct my_facet65 : public std::locale::facet66{67 int test() const {return 5;}68 69 static std::locale::id id;70};71 72std::locale::id my_facet::id;73 74int main(int, char**)75{76{77 globalMemCounter.reset();78 {79 std::locale loc;80 std::locale loc2(loc, new my_facet);81 std::locale loc3 = loc.combine<my_facet>(loc2);82 check(loc3);83 assert(loc3.name() == "*");84 assert((std::has_facet<my_facet>(loc3)));85 const my_facet& f = std::use_facet<my_facet>(loc3);86 assert(f.test() == 5);87 }88 assert(globalMemCounter.checkOutstandingNewEq(0));89}90#ifndef TEST_HAS_NO_EXCEPTIONS91{92 {93 std::locale loc;94 std::locale loc2;95 try96 {97 std::locale loc3 = loc.combine<my_facet>(loc2);98 assert(false);99 }100 catch (std::runtime_error&)101 {102 }103 }104 assert(globalMemCounter.checkOutstandingNewEq(0));105}106#endif107 108 return 0;109}110