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// Copyright (C) 2017-2020 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-options "-std=gnu++17" }
// { dg-do run { target c++17 } }
#include <charconv>
#include <testsuite_hooks.h>
// Test std::to_chars error handling.
void
test01()
{
char buf[9] = "********";
std::to_chars_result r;
r = std::to_chars(buf, buf, 1);
VERIFY( r.ec == std::errc::value_too_large );
VERIFY( r.ptr == buf );
VERIFY( *r.ptr == '*' );
r = std::to_chars(buf, buf + 3, 0b1000, 2);
VERIFY( r.ec == std::errc::value_too_large );
VERIFY( r.ptr == buf + 3 );
VERIFY( *r.ptr == '*' );
r = std::to_chars(buf, buf + 4, 0b1000, 2);
VERIFY( r.ec == std::errc{} );
VERIFY( r.ptr == buf + 4 );
VERIFY( *r.ptr == '*' );
r = std::to_chars(buf, buf + 4, 010000, 8);
VERIFY( r.ec == std::errc::value_too_large );
VERIFY( r.ptr == buf + 4 );
VERIFY( *r.ptr == '*' );
r = std::to_chars(buf, buf + 5, 010000, 8);
VERIFY( r.ec == std::errc{} );
VERIFY( r.ptr == buf + 5 );
VERIFY( *r.ptr == '*' );
r = std::to_chars(buf, buf + 5, 100000, 10);
VERIFY( r.ec == std::errc::value_too_large );
VERIFY( r.ptr == buf + 5 );
VERIFY( *r.ptr == '*' );
r = std::to_chars(buf, buf + 6, 100000, 10);
VERIFY( r.ec == std::errc{} );
VERIFY( r.ptr == buf + 6 );
VERIFY( *r.ptr == '*' );
r = std::to_chars(buf, buf + 6, 0x1000000, 16);
VERIFY( r.ec == std::errc::value_too_large );
VERIFY( r.ptr == buf + 6 );
VERIFY( *r.ptr == '*' );
r = std::to_chars(buf, buf + 7, 0x1000000, 16);
VERIFY( r.ec == std::errc{} );
VERIFY( r.ptr == buf + 7 );
VERIFY( *r.ptr == '*' );
}
int
main()
{
test01();
}
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