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// Copyright (C) 2018-2024 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-do run { target c++11 } }
#include <fstream>
#include <locale>
#include <testsuite_hooks.h>
struct E : std::runtime_error
{
E() : runtime_error("") { }
};
struct Cvt : std::codecvt<wchar_t, char, std::mbstate_t>
{
explicit Cvt(size_t refs) : codecvt(refs) { }
mutable int exceptions_thrown = 0;
private:
int
do_encoding() const noexcept override
{ return -1; }
bool
do_always_noconv() const noexcept override
{ return false; }
result
do_unshift(state_type&, char*, char*, char*&) const override
{
++exceptions_thrown;
throw E();
}
};
struct filebuf : std::basic_filebuf<wchar_t>
{
explicit filebuf(Cvt* c)
{
std::locale loc(std::locale::classic(), c);
imbue(loc);
}
};
void
test01()
{
// This facet needs to still be valid when ~basic_filebuf runs:
Cvt conv{1};
{
filebuf fb(&conv);
fb.open("output.txt", std::wios::out);
fb.sputn(L"x", 1);
bool caught = false;
try
{
/* [filebuf.members] p7: If one of these calls throws an exception,
* the exception is caught and rethrown after closing the file. */
fb.close();
}
catch (const E&)
{
caught = true;
}
VERIFY( conv.exceptions_thrown == 1 );
VERIFY( caught );
}
VERIFY( conv.exceptions_thrown == 1 );
}
void
test02()
{
// This facet needs to still be valid when ~basic_filebuf runs:
Cvt conv{1};
{
filebuf fb(&conv);
fb.open("output.txt", std::wios::out);
fb.sputn(L"x", 1);
/* [filebuf.cons] p5: If an exception occurs during the destruction
* of the object, including the call to close(), the exception is
* caught but not rethrown. */
}
VERIFY( conv.exceptions_thrown == 1 );
}
int
main()
{
test01();
test02();
}
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