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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/21_strings/basic_string_view/inserters/wchar_t/2.cc
1 // { dg-options "-std=gnu++17" }
2 // { dg-do run { target c++17 } }
3 // { dg-require-fileio "" }
5 // Copyright (C) 2013-2021 Free Software Foundation, Inc.
7 // This file is part of the GNU ISO C++ Library. This library is free
8 // software; you can redistribute it and/or modify it under the
9 // terms of the GNU General Public License as published by the
10 // Free Software Foundation; either version 3, or (at your option)
13 // This library is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License along
19 // with this library; see the file COPYING3. If not see
20 // <http://www.gnu.org/licenses/>.
24 // NB: This file is predicated on sstreams, istreams, and ostreams
25 // working, not to mention other major details like char_traits, and
26 // all of the string_view class.
28 #include <string_view>
32 #include <testsuite_hooks.h>
34 // testing basic_filebuf::xsputn via stress testing with large string_views
35 // based on a bug report libstdc++ 9
38 test05(std::size_t size
)
42 const char filename
[] = "inserters_extractors-2.txt";
43 const wchar_t fillc
= L
'f';
44 std::wofstream
ofs(filename
);
45 std::wstring
str(size
, fillc
);
46 std::wstring_view
strv(str
);
49 VERIFY( str
.size() == size
);
53 ofs
<< str
<< std::endl
;
57 ofs
<< str
<< std::endl
;
61 VERIFY( str
.size() == size
);
66 // sanity check on the written file
67 std::wifstream
ifs(filename
);
68 std::size_t count
= 0;
70 while (count
<= (2 * size
) + 4)
73 if (ifs
.good() && c
== fillc
)
82 VERIFY( count
== 2 * size
);