xref: /llvm-project/libcxx/test/std/utilities/format/format.functions/unicode.pass.cpp (revision 09addf9cbe0a5a8ba9d5666b6e25e6308c441ae2) 
1 //===----------------------------------------------------------------------===//
2 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
3 // See https://llvm.org/LICENSE.txt for license information.
4 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
5 //
6 //===----------------------------------------------------------------------===//
7 
8 // UNSUPPORTED: c++03, c++11, c++14, c++17
9 // UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME
10 
11 // This version runs the test when the platform has Unicode support.
12 // UNSUPPORTED: libcpp-has-no-unicode
13 
14 // TODO FMT This test should not require std::to_chars(floating-point)
15 // XFAIL: availability-fp_to_chars-missing
16 
17 // <format>
18 
19 // Tests the Unicode width support of the standard format specifiers.
20 // It tests [format.string.std]/8 - 11:
21 // - Properly determining the estimated with of a unicode string.
22 // - Properly truncating to the wanted maximum width.
23 
24 // More specific extended grapheme cluster boundary rules are tested in
25 // test/libcxx/utilities/format/format.string/format.string.std/extended_grapheme_cluster.pass.cpp
26 // this test is based on test data provided by the Unicode Consortium.
27 
28 #include <format>
29 #include <cassert>
30 #include <vector>
31 
32 #include "make_string.h"
33 #include "test_macros.h"
34 #include "string_literal.h"
35 #include "test_format_string.h"
36 
37 #ifndef TEST_HAS_NO_LOCALIZATION
38 #  include <iostream>
39 #  include <type_traits>
40 #endif
41 
42 #define SV(S) MAKE_STRING_VIEW(CharT, S)
43 
44 template < class CharT, class... Args>
45 void check(std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
46   std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
47 #ifndef TEST_HAS_NO_LOCALIZATION
48   if constexpr (std::same_as<CharT, char>)
49     if (out != expected)
50       std::cerr << "\nFormat string   " << fmt.get() << "\nExpected output " << expected << "\nActual output   " << out
51                 << '\n';
52 #endif
53   assert(out == expected);
54 };
55 
56 template <class CharT>
57 static void test_single_code_point_fill() {
58   //*** 1-byte code points ***
59   check(SV("* *"), SV("{:*^3}"), SV(" "));
60   check(SV("*~*"), SV("{:*^3}"), SV("~"));
61 
62   //*** 2-byte code points ***
63   check(SV("*\u00a1*"), SV("{:*^3}"), SV("\u00a1")); // INVERTED EXCLAMATION MARK
64   check(SV("*\u07ff*"), SV("{:*^3}"), SV("\u07ff")); // NKO TAMAN SIGN
65 
66   //*** 3-byte code points ***
67   check(SV("*\u0800*"), SV("{:*^3}"), SV("\u0800")); // SAMARITAN LETTER ALAF
68   check(SV("*\ufffd*"), SV("{:*^3}"), SV("\ufffd")); // REPLACEMENT CHARACTER
69 
70   // 2 column ranges
71   check(SV("*\u1100*"), SV("{:*^4}"), SV("\u1100")); // HANGUL CHOSEONG KIYEOK
72   check(SV("*\u115f*"), SV("{:*^4}"), SV("\u115f")); // HANGUL CHOSEONG FILLER
73 
74   check(SV("*\u2329*"), SV("{:*^4}"), SV("\u2329")); // LEFT-POINTING ANGLE BRACKET
75   check(SV("*\u232a*"), SV("{:*^4}"), SV("\u232a")); // RIGHT-POINTING ANGLE BRACKET
76 
77   check(SV("*\u2e80*"), SV("{:*^4}"), SV("\u2e80")); // CJK RADICAL REPEAT
78   check(SV("*\u303e*"), SV("{:*^4}"), SV("\u303e")); // IDEOGRAPHIC VARIATION INDICATOR
79 
80   check(SV("*\u3041*"), SV("{:*^4}"), SV("\u3041")); // U+3041 HIRAGANA LETTER SMALL A
81   check(SV("*\ua4d0*"), SV("{:*^3}"), SV("\ua4d0")); // U+A4D0 LISU LETTER BA
82 
83   check(SV("*\uac00*"), SV("{:*^4}"), SV("\uac00")); // <Hangul Syllable, First>
84   check(SV("*\ud7a3*"), SV("{:*^4}"), SV("\ud7a3")); // Hangul Syllable Hih
85 
86   check(SV("*\uf900*"), SV("{:*^4}"), SV("\uf900")); // CJK COMPATIBILITY IDEOGRAPH-F900
87   check(SV("*\ufaff*"), SV("{:*^4}"), SV("\ufaff")); // U+FB00 LATIN SMALL LIGATURE FF
88 
89   check(SV("*\ufe10*"), SV("{:*^4}"), SV("\ufe10")); // PRESENTATION FORM FOR VERTICAL COMMA
90   check(SV("*\ufe19*"), SV("{:*^4}"), SV("\ufe19")); // PRESENTATION FORM FOR VERTICAL HORIZONTAL ELLIPSIS
91 
92   check(SV("*\ufe30*"), SV("{:*^4}"), SV("\ufe30")); // PRESENTATION FORM FOR VERTICAL TWO DOT LEADER
93   check(SV("*\ufe70*"), SV("{:*^3}"), SV("\ufe70")); // U+FE70 ARABIC FATHATAN ISOLATED FORM
94 
95   check(SV("*\uff01*"), SV("{:*^4}"), SV("\uff01")); // U+FF01 FULLWIDTH EXCLAMATION MARK
96   check(SV("*\uff60*"), SV("{:*^4}"), SV("\uff60")); // FULLWIDTH RIGHT WHITE PARENTHESIS
97 
98   check(SV("*\uffe0*"), SV("{:*^4}"), SV("\uffe0")); // FULLWIDTH CENT SIGN
99   check(SV("*\uffe6*"), SV("{:*^4}"), SV("\uffe6")); // FULLWIDTH WON SIGN
100 
101   //*** 4-byte code points ***
102   check(SV("*\U00010000*"), SV("{:*^3}"), SV("\U00010000")); // LINEAR B SYLLABLE B008 A
103   check(SV("*\U0010FFFF*"), SV("{:*^3}"), SV("\U0010FFFF")); // Undefined Character
104 
105   // 2 column ranges
106   check(SV("*\U0001f300*"), SV("{:*^4}"), SV("\U0001f300")); // CYCLONE
107   check(SV("*\U0001f64f*"), SV("{:*^4}"), SV("\U0001f64f")); // PERSON WITH FOLDED HANDS
108   check(SV("*\U0001f900*"), SV("{:*^4}"), SV("\U0001f900")); // CIRCLED CROSS FORMEE WITH FOUR DOTS
109   check(SV("*\U0001f9ff*"), SV("{:*^4}"), SV("\U0001f9ff")); // NAZAR AMULET
110   check(SV("*\U00020000*"), SV("{:*^4}"), SV("\U00020000")); // <CJK Ideograph Extension B, First>
111   check(SV("*\U0002fffd*"), SV("{:*^4}"), SV("\U0002fffd")); // Undefined Character
112   check(SV("*\U00030000*"), SV("{:*^4}"), SV("\U00030000")); // <CJK Ideograph Extension G, First>
113   check(SV("*\U0003fffd*"), SV("{:*^4}"), SV("\U0003fffd")); // Undefined Character
114 }
115 
116 // One column output is unaffected.
117 // Two column output is removed, thus the result is only the fill character.
118 template <class CharT>
119 static void test_single_code_point_truncate() {
120   //*** 1-byte code points ***
121   check(SV("* *"), SV("{:*^3.1}"), SV(" "));
122   check(SV("*~*"), SV("{:*^3.1}"), SV("~"));
123 
124   //*** 2-byte code points ***
125   check(SV("*\u00a1*"), SV("{:*^3.1}"), SV("\u00a1")); // INVERTED EXCLAMATION MARK
126   check(SV("*\u07ff*"), SV("{:*^3.1}"), SV("\u07ff")); // NKO TAMAN SIGN
127 
128   //*** 3.1-byte code points ***
129   check(SV("*\u0800*"), SV("{:*^3.1}"), SV("\u0800")); // SAMARITAN LETTER ALAF
130   check(SV("*\ufffd*"), SV("{:*^3.1}"), SV("\ufffd")); // REPLACEMENT CHARACTER
131 
132   // 2 column ranges
133   check(SV("***"), SV("{:*^3.1}"), SV("\u1100")); // HANGUL CHOSEONG KIYEOK
134   check(SV("***"), SV("{:*^3.1}"), SV("\u115f")); // HANGUL CHOSEONG FILLER
135 
136   check(SV("***"), SV("{:*^3.1}"), SV("\u2329")); // LEFT-POINTING ANGLE BRACKET
137   check(SV("***"), SV("{:*^3.1}"), SV("\u232a")); // RIGHT-POINTING ANGLE BRACKET
138 
139   check(SV("***"), SV("{:*^3.1}"), SV("\u2e80")); // CJK RADICAL REPEAT
140   check(SV("***"), SV("{:*^3.1}"), SV("\u303e")); // IDEOGRAPHIC VARIATION INDICATOR
141 
142   check(SV("***"), SV("{:*^3.1}"), SV("\u3041")); // U+3041 HIRAGANA LETTER SMALL A
143   check(SV("*\ua4d0*"), SV("{:*^3.1}"), SV("\ua4d0")); // U+A4D0 LISU LETTER BA
144 
145   check(SV("***"), SV("{:*^3.1}"), SV("\uac00")); // <Hangul Syllable, First>
146   check(SV("***"), SV("{:*^3.1}"), SV("\ud7a3")); // Hangul Syllable Hih
147 
148   check(SV("***"), SV("{:*^3.1}"), SV("\uf900")); // CJK COMPATIBILITY IDEOGRAPH-F900
149   check(SV("***"), SV("{:*^3.1}"), SV("\ufaff")); // U+FB00 LATIN SMALL LIGATURE FF
150 
151   check(SV("***"), SV("{:*^3.1}"), SV("\ufe10")); // PRESENTATION FORM FOR VERTICAL COMMA
152   check(SV("***"), SV("{:*^3.1}"), SV("\ufe19")); // PRESENTATION FORM FOR VERTICAL HORIZONTAL ELLIPSIS
153 
154   check(SV("***"), SV("{:*^3.1}"), SV("\ufe30")); // PRESENTATION FORM FOR VERTICAL TWO DOT LEADER
155   check(SV("*\ufe70*"), SV("{:*^3.1}"), SV("\ufe70")); // U+FE70 ARABIC FATHATAN ISOLATED FORM
156 
157   check(SV("***"), SV("{:*^3.1}"), SV("\uff01"));      // U+FF01 FULLWIDTH EXCLAMATION MARK
158   check(SV("***"), SV("{:*^3.1}"), SV("\uff60")); // FULLWIDTH RIGHT WHITE PARENTHESIS
159 
160   check(SV("***"), SV("{:*^3.1}"), SV("\uffe0")); // FULLWIDTH CENT SIGN
161   check(SV("***"), SV("{:*^3.1}"), SV("\uffe6")); // FULLWIDTH WON SIGN
162 
163   //*** 3.1-byte code points ***
164   check(SV("*\U00010000*"), SV("{:*^3.1}"), SV("\U00010000")); // LINEAR B SYLLABLE B008 A
165   check(SV("*\U0010FFFF*"), SV("{:*^3.1}"), SV("\U0010FFFF")); // Undefined Character
166 
167   // 2 column ranges
168   check(SV("***"), SV("{:*^3.1}"), SV("\U0001f300")); // CYCLONE
169   check(SV("***"), SV("{:*^3.1}"), SV("\U0001f64f")); // PERSON WITH FOLDED HANDS
170   check(SV("***"), SV("{:*^3.1}"), SV("\U0001f900")); // CIRCLED CROSS FORMEE WITH FOUR DOTS
171   check(SV("***"), SV("{:*^3.1}"), SV("\U0001f9ff")); // NAZAR AMULET
172   check(SV("***"), SV("{:*^3.1}"), SV("\U00020000")); // <CJK Ideograph Extension B, First>
173   check(SV("***"), SV("{:*^3.1}"), SV("\U0002fffd")); // Undefined Character
174   check(SV("***"), SV("{:*^3.1}"), SV("\U00030000")); // <CJK Ideograph Extension G, First>
175   check(SV("***"), SV("{:*^3.1}"), SV("\U0003fffd")); // Undefined Character
176 }
177 
178 // The examples used in that paper.
179 template <class CharT>
180 static void test_P1868() {
181   // Fill
182   check(SV("*\u0041*"), SV("{:*^3}"), SV("\u0041")); // { LATIN CAPITAL LETTER A }
183   check(SV("*\u00c1*"), SV("{:*^3}"), SV("\u00c1")); // { LATIN CAPITAL LETTER A WITH ACUTE }
184   check(SV("*\u0041\u0301*"),
185         SV("{:*^3}"),
186         SV("\u0041\u0301"));                         // { LATIN CAPITAL LETTER A } { COMBINING ACUTE ACCENT }
187   check(SV("*\u0132*"), SV("{:*^3}"), SV("\u0132")); // { LATIN CAPITAL LIGATURE IJ }
188   check(SV("*\u0394*"), SV("{:*^3}"), SV("\u0394")); // { GREEK CAPITAL LETTER DELTA }
189 
190   check(SV("*\u0429*"), SV("{:*^3}"), SV("\u0429"));         // { CYRILLIC CAPITAL LETTER SHCHA }
191   check(SV("*\u05d0*"), SV("{:*^3}"), SV("\u05d0"));         // { HEBREW LETTER ALEF }
192   check(SV("*\u0634*"), SV("{:*^3}"), SV("\u0634"));         // { ARABIC LETTER SHEEN }
193   check(SV("*\u3009*"), SV("{:*^4}"), SV("\u3009"));         // { RIGHT-POINTING ANGLE BRACKET }
194   check(SV("*\u754c*"), SV("{:*^4}"), SV("\u754c"));         // { CJK Unified Ideograph-754C }
195   check(SV("*\U0001f921*"), SV("{:*^4}"), SV("\U0001f921")); // { UNICORN FACE }
196   check(SV("*\U0001f468\u200d\U0001F469\u200d\U0001F467\u200d\U0001F466*"),
197         SV("{:*^4}"),
198         SV("\U0001f468\u200d\U0001F469\u200d\U0001F467\u200d\U0001F466")); // { Family: Man, Woman, Girl, Boy }
199 
200   // Truncate to 1 column: 1 column grapheme clusters are kept together.
201   check(SV("*\u0041*"), SV("{:*^3.1}"), SV("\u0041")); // { LATIN CAPITAL LETTER A }
202   check(SV("*\u00c1*"), SV("{:*^3.1}"), SV("\u00c1")); // { LATIN CAPITAL LETTER A WITH ACUTE }
203   check(SV("*\u0041\u0301*"),
204         SV("{:*^3.1}"),
205         SV("\u0041\u0301"));                           // { LATIN CAPITAL LETTER A } { COMBINING ACUTE ACCENT }
206   check(SV("*\u0132*"), SV("{:*^3.1}"), SV("\u0132")); // { LATIN CAPITAL LIGATURE IJ }
207   check(SV("*\u0394*"), SV("{:*^3.1}"), SV("\u0394")); // { GREEK CAPITAL LETTER DELTA }
208 
209   check(SV("*\u0429*"), SV("{:*^3.1}"), SV("\u0429")); // { CYRILLIC CAPITAL LETTER SHCHA }
210   check(SV("*\u05d0*"), SV("{:*^3.1}"), SV("\u05d0")); // { HEBREW LETTER ALEF }
211   check(SV("*\u0634*"), SV("{:*^3.1}"), SV("\u0634")); // { ARABIC LETTER SHEEN }
212   check(SV("***"), SV("{:*^3.1}"), SV("\u3009"));      // { RIGHT-POINTING ANGLE BRACKET }
213   check(SV("***"), SV("{:*^3.1}"), SV("\u754c"));      // { CJK Unified Ideograph-754C }
214   check(SV("***"), SV("{:*^3.1}"), SV("\U0001f921"));  // { UNICORN FACE }
215   check(SV("***"),
216         SV("{:*^3.1}"),
217         SV("\U0001f468\u200d\U0001F469\u200d\U0001F467\u200d\U0001F466")); // { Family: Man, Woman, Girl, Boy }
218 
219   // Truncate to 2 column: 2 column grapheme clusters are kept together.
220   check(SV("*\u0041*"), SV("{:*^3.2}"), SV("\u0041")); // { LATIN CAPITAL LETTER A }
221   check(SV("*\u00c1*"), SV("{:*^3.2}"), SV("\u00c1")); // { LATIN CAPITAL LETTER A WITH ACUTE }
222   check(SV("*\u0041\u0301*"),
223         SV("{:*^3.2}"),
224         SV("\u0041\u0301"));                           // { LATIN CAPITAL LETTER A } { COMBINING ACUTE ACCENT }
225   check(SV("*\u0132*"), SV("{:*^3.2}"), SV("\u0132")); // { LATIN CAPITAL LIGATURE IJ }
226   check(SV("*\u0394*"), SV("{:*^3.2}"), SV("\u0394")); // { GREEK CAPITAL LETTER DELTA }
227 
228   check(SV("*\u0429*"), SV("{:*^3.2}"), SV("\u0429"));         // { CYRILLIC CAPITAL LETTER SHCHA }
229   check(SV("*\u05d0*"), SV("{:*^3.2}"), SV("\u05d0"));         // { HEBREW LETTER ALEF }
230   check(SV("*\u0634*"), SV("{:*^3.2}"), SV("\u0634"));         // { ARABIC LETTER SHEEN }
231   check(SV("*\u3009*"), SV("{:*^4.2}"), SV("\u3009"));         // { RIGHT-POINTING ANGLE BRACKET }
232   check(SV("*\u754c*"), SV("{:*^4.2}"), SV("\u754c"));         // { CJK Unified Ideograph-754C }
233   check(SV("*\U0001f921*"), SV("{:*^4.2}"), SV("\U0001f921")); // { UNICORN FACE }
234   check(SV("*\U0001f468\u200d\U0001F469\u200d\U0001F467\u200d\U0001F466*"),
235         SV("{:*^4.2}"),
236         SV("\U0001f468\u200d\U0001F469\u200d\U0001F467\u200d\U0001F466")); // { Family: Man, Woman, Girl, Boy }
237 }
238 
239 #ifdef _LIBCPP_VERSION
240 // Tests the libc++ specific behaviour for malformed UTF-sequences. The
241 // Standard doesn't specify how to handle this.
242 template <class CharT>
243 static void test_malformed_code_point() {
244   if constexpr (sizeof(CharT) == 1) {
245     // Malformed at end.
246     check(SV("*ZZZZ\x8f*"), SV("{:*^7}"), SV("ZZZZ\x8f"));
247     check(SV("*ZZZZ\xcf*"), SV("{:*^7}"), SV("ZZZZ\xcf"));
248     check(SV("*ZZZZ\xef*"), SV("{:*^7}"), SV("ZZZZ\xef"));
249     check(SV("*ZZZZ\xff*"), SV("{:*^7}"), SV("ZZZZ\xff"));
250 
251     // Malformed in middle, no continuation
252     check(SV("*ZZZZ\x8fZ*"), SV("{:*^8}"), SV("ZZZZ\x8fZ"));
253     check(SV("*ZZZZ\xcfZ*"), SV("{:*^8}"), SV("ZZZZ\xcfZ"));
254     check(SV("*ZZZZ\xefZ*"), SV("{:*^8}"), SV("ZZZZ\xefZ"));
255     check(SV("*ZZZZ\xffZ*"), SV("{:*^8}"), SV("ZZZZ\xffZ"));
256 
257     check(SV("*ZZZZ\x8fZZ*"), SV("{:*^9}"), SV("ZZZZ\x8fZZ"));
258     check(SV("*ZZZZ\xcfZZ*"), SV("{:*^9}"), SV("ZZZZ\xcfZZ"));
259     check(SV("*ZZZZ\xefZZ*"), SV("{:*^9}"), SV("ZZZZ\xefZZ"));
260     check(SV("*ZZZZ\xffZZ*"), SV("{:*^9}"), SV("ZZZZ\xffZZ"));
261 
262     check(SV("*ZZZZ\x8fZZZ*"), SV("{:*^10}"), SV("ZZZZ\x8fZZZ"));
263     check(SV("*ZZZZ\xcfZZZ*"), SV("{:*^10}"), SV("ZZZZ\xcfZZZ"));
264     check(SV("*ZZZZ\xefZZZ*"), SV("{:*^10}"), SV("ZZZZ\xefZZZ"));
265     check(SV("*ZZZZ\xffZZZ*"), SV("{:*^10}"), SV("ZZZZ\xffZZZ"));
266 
267     check(SV("*ZZZZ\x8fZZZZ*"), SV("{:*^11}"), SV("ZZZZ\x8fZZZZ"));
268     check(SV("*ZZZZ\xcfZZZZ*"), SV("{:*^11}"), SV("ZZZZ\xcfZZZZ"));
269     check(SV("*ZZZZ\xefZZZZ*"), SV("{:*^11}"), SV("ZZZZ\xefZZZZ"));
270     check(SV("*ZZZZ\xffZZZZ*"), SV("{:*^11}"), SV("ZZZZ\xffZZZZ"));
271 
272     // Invalid continuations
273     check(SV("\xc2\x00"), SV("{}"), SV("\xc2\x00"));
274     check(SV("\xc2\x40"), SV("{}"), SV("\xc2\x40"));
275     check(SV("\xc2\xc0"), SV("{}"), SV("\xc2\xc0"));
276 
277     check(SV("\xe0\x00\x80"), SV("{}"), SV("\xe0\x00\x80"));
278     check(SV("\xe0\x40\x80"), SV("{}"), SV("\xe0\x40\x80"));
279     check(SV("\xe0\xc0\x80"), SV("{}"), SV("\xe0\xc0\x80"));
280 
281     check(SV("\xe0\x80\x00"), SV("{}"), SV("\xe0\x80\x00"));
282     check(SV("\xe0\x80\x40"), SV("{}"), SV("\xe0\x80\x40"));
283     check(SV("\xe0\x80\xc0"), SV("{}"), SV("\xe0\x80\xc0"));
284 
285     check(SV("\xf0\x80\x80\x00"), SV("{}"), SV("\xf0\x80\x80\x00"));
286     check(SV("\xf0\x80\x80\x40"), SV("{}"), SV("\xf0\x80\x80\x40"));
287     check(SV("\xf0\x80\x80\xc0"), SV("{}"), SV("\xf0\x80\x80\xc0"));
288 
289     check(SV("\xf0\x80\x00\x80"), SV("{}"), SV("\xf0\x80\x00\x80"));
290     check(SV("\xf0\x80\x40\x80"), SV("{}"), SV("\xf0\x80\x40\x80"));
291     check(SV("\xf0\x80\xc0\x80"), SV("{}"), SV("\xf0\x80\xc0\x80"));
292 
293     check(SV("\xf0\x00\x80\x80"), SV("{}"), SV("\xf0\x00\x80\x80"));
294     check(SV("\xf0\x40\x80\x80"), SV("{}"), SV("\xf0\x40\x80\x80"));
295     check(SV("\xf0\xc0\x80\x80"), SV("{}"), SV("\xf0\xc0\x80\x80"));
296 
297     // Premature end.
298     check(SV("*ZZZZ\xef\xf5*"), SV("{:*^8}"), SV("ZZZZ\xef\xf5"));
299     check(SV("*ZZZZ\xef\xf5ZZZZ*"), SV("{:*^12}"), SV("ZZZZ\xef\xf5ZZZZ"));
300     check(SV("*ZZZZ\xff\xf5\xf5*"), SV("{:*^9}"), SV("ZZZZ\xff\xf5\xf5"));
301     check(SV("*ZZZZ\xff\xf5\xf5ZZZZ*"), SV("{:*^13}"), SV("ZZZZ\xff\xf5\xf5ZZZZ"));
302 
303   } else if constexpr (sizeof(CharT) == 2) {
304     // TODO FMT Add these tests.
305   }
306   // UTF-32 doesn't combine characters, thus no corruption tests.
307 }
308 #endif
309 
310 template <class CharT>
311 static void test() {
312   test_single_code_point_fill<CharT>();
313   test_single_code_point_truncate<CharT>();
314   test_P1868<CharT>();
315 
316 #ifdef _LIBCPP_VERSION
317   test_malformed_code_point<CharT>();
318 #endif
319 }
320 
321 int main(int, char**) {
322   test<char>();
323 
324 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
325   test<wchar_t>();
326 #endif
327 
328   return 0;
329 }
330