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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/27_io/basic_ostream/inserters_arithmetic/wchar_t/4402.cc
1 // { dg-require-swprintf "" }
3 // Copyright (C) 2005-2024 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
20 #include <cstdio> // for swprintf
25 #include <testsuite_hooks.h>
32 // make sure we can output a very long float
33 long double val
= numeric_limits
<long double>::max();
34 int prec
= numeric_limits
<long double>::digits10
;
38 os
.setf(wios::scientific
);
41 wchar_t largebuf
[512];
42 swprintf(largebuf
, 512, L
"%.*Le", prec
, val
);
43 #ifdef TEST_NUMPUT_VERBOSE
44 wcout
<< "expect: " << largebuf
<< endl
;
45 wcout
<< "result: " << os
.str() << endl
;
47 VERIFY( os
&& os
.str() == largebuf
);
49 // Make sure we can output a long float in fixed format
50 // without seg-faulting (libstdc++/4402)
51 double val2
= numeric_limits
<double>::max();
55 os2
.setf(wios::fixed
);
58 swprintf(largebuf
, 512, L
"%.*f", 3, val2
);
59 #ifdef TEST_NUMPUT_VERBOSE
60 wcout
<< "expect: " << largebuf
<< endl
;
61 wcout
<< "result: " << os2
.str() << endl
;
63 VERIFY( os2
&& os2
.str() == largebuf
);