1 // Copyright (C) 2017-2021 Free Software Foundation, Inc.
2 //
3 // This file is part of the GNU ISO C++ Library.  This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
7 // any later version.
8 
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 // GNU General Public License for more details.
13 
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3.  If not see
16 // <http://www.gnu.org/licenses/>.
17 
18 // { dg-do run { target c++11 } }
19 
20 #include <codecvt>
21 #include <testsuite_hooks.h>
22 
23 const int bomlen = 2; // UTF-16 BOM is 16 bits
24 
25 void
test01()26 test01()
27 {
28   const int maxlen = 2;
29 
30   std::codecvt_utf16<char16_t> c;
31   VERIFY( c.always_noconv() == false );
32   VERIFY( c.encoding() == 0 );
33   VERIFY( c.max_length() == maxlen );
34 
35   std::codecvt_utf16<char16_t, 0x10ffff, std::consume_header> c_bom;
36   VERIFY( c_bom.always_noconv() == false );
37   VERIFY( c_bom.encoding() == 0 );
38   VERIFY( c_bom.max_length() == (maxlen + bomlen) );
39 }
40 
41 void
test02()42 test02()
43 {
44   const int maxlen = 4;
45 
46   std::codecvt_utf16<char32_t> c;
47   VERIFY( c.always_noconv() == false );
48   VERIFY( c.encoding() == 0 );
49   VERIFY( c.max_length() == maxlen );
50 
51   std::codecvt_utf16<char32_t, 0x10ffff, std::consume_header> c_bom;
52   VERIFY( c_bom.always_noconv() == false );
53   VERIFY( c_bom.encoding() == 0 );
54   VERIFY( c_bom.max_length() == (maxlen + bomlen) );
55 }
56 
57 void
test03()58 test03()
59 {
60 #ifdef _GLIBCXX_USE_WCHAR_T
61   const int maxlen = sizeof(wchar_t) == 4 ? 4 : 2;
62 
63   std::codecvt_utf16<wchar_t> c;
64   VERIFY( c.always_noconv() == false );
65   VERIFY( c.encoding() == 0 );
66   VERIFY( c.max_length() == maxlen );
67 
68   std::codecvt_utf16<wchar_t, 0x10ffff, std::consume_header> c_bom;
69   VERIFY( c_bom.always_noconv() == false );
70   VERIFY( c_bom.encoding() == 0 );
71   VERIFY( c_bom.max_length() == (maxlen + bomlen) );
72 #endif
73 }
74 
75 int
main()76 main()
77 {
78   test01();
79   test02();
80   test03();
81 }
82