// Copyright (C) 2017-2023 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
// .
// is supported in C++14 as a GNU extension
// { dg-do run { target c++14 } }
#include
#include
#include
// Test std::from_chars error handling.
void
test01()
{
std::from_chars_result r;
int i = 999;
std::string s;
s = "";
r = std::from_chars(s.data(), s.data() + s.length(), i);
VERIFY( r.ec == std::errc::invalid_argument );
VERIFY( r.ptr == s.data() );
VERIFY( i == 999 );
s = "*";
r = std::from_chars(s.data(), s.data() + s.length(), i);
VERIFY( r.ec == std::errc::invalid_argument );
VERIFY( r.ptr == s.data() );
VERIFY( i == 999 );
s = "-";
r = std::from_chars(s.data(), s.data() + s.length(), i);
VERIFY( r.ec == std::errc::invalid_argument );
VERIFY( r.ptr == s.data() );
VERIFY( i == 999 );
s = "-*";
r = std::from_chars(s.data(), s.data() + s.length(), i);
VERIFY( r.ec == std::errc::invalid_argument );
VERIFY( r.ptr == s.data() );
VERIFY( i == 999 );
s = "+1";
r = std::from_chars(s.data(), s.data() + s.length(), i);
VERIFY( r.ec == std::errc::invalid_argument );
VERIFY( r.ptr == s.data() );
VERIFY( i == 999 );
unsigned u = 888;
s = "-1";
r = std::from_chars(s.data(), s.data() + s.length(), u);
VERIFY( r.ec == std::errc::invalid_argument );
VERIFY( r.ptr == s.data() );
s = "-a";
r = std::from_chars(s.data(), s.data() + s.length(), u);
VERIFY( r.ec == std::errc::invalid_argument );
VERIFY( r.ptr == s.data() );
s = "-";
r = std::from_chars(s.data(), s.data() + s.length(), u);
VERIFY( r.ec == std::errc::invalid_argument );
VERIFY( r.ptr == s.data() );
VERIFY( u == 888 );
s = "+1";
r = std::from_chars(s.data(), s.data() + s.length(), u);
VERIFY( r.ec == std::errc::invalid_argument );
VERIFY( r.ptr == s.data() );
VERIFY( u == 888 );
for (int base = 2; base <= 36; ++base)
{
const char digits[] = "0123456789abcdefghijklmnopqrstuvwxyz*";
const char buf[2] = { '-', digits[base] };
r = std::from_chars(buf, buf + 1, i, base);
VERIFY( r.ec == std::errc::invalid_argument );
VERIFY( r.ptr == buf );
VERIFY( i == 999 );
r = std::from_chars(buf + 1, buf + 2, i, base);
VERIFY( r.ec == std::errc::invalid_argument );
VERIFY( r.ptr == buf + 1 );
VERIFY( i == 999 );
r = std::from_chars(buf, buf + 2, i, base);
VERIFY( r.ec == std::errc::invalid_argument );
VERIFY( r.ptr == buf );
VERIFY( i == 999 );
}
}
void
test02()
{
std::from_chars_result r;
std::string s;
signed char c = -5;
s = "-10000001";
r = std::from_chars(s.data(), s.data() + s.length(), c, 2);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + s.length() );
s = "-10000001*";
r = std::from_chars(s.data(), s.data() + s.length(), c, 2);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 9 );
s = "-10000001000*";
r = std::from_chars(s.data(), s.data() + s.length(), c, 2);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 12 );
s = "-129";
r = std::from_chars(s.data(), s.data() + s.length(), c, 10);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + s.length() );
s = "-129*";
r = std::from_chars(s.data(), s.data() + s.length(), c, 10);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 4 );
s = "-100";
r = std::from_chars(s.data(), s.data() + s.length(), c, 16);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + s.length() );
s = "-100*";
r = std::from_chars(s.data(), s.data() + s.length(), c, 16);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 4 );
s = "-81";
r = std::from_chars(s.data(), s.data() + s.length(), c, 16);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + s.length() );
s = "-81*";
r = std::from_chars(s.data(), s.data() + s.length(), c, 16);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 3 );
s = "128";
r = std::from_chars(s.data(), s.data() + s.length(), c, 10);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + s.length() );
s = "128*";
r = std::from_chars(s.data(), s.data() + s.length(), c, 10);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 3 );
s = "80";
r = std::from_chars(s.data(), s.data() + s.length(), c, 16);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + s.length() );
s = "80*";
r = std::from_chars(s.data(), s.data() + s.length(), c, 16);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 2 );
VERIFY( c == -5 );
unsigned char uc = 9;
s = "100000000";
r = std::from_chars(s.data(), s.data() + s.length(), uc, 2);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + s.length() );
s = "100000000*";
r = std::from_chars(s.data(), s.data() + s.length(), uc, 2);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 9 );
s = "100000000000*";
r = std::from_chars(s.data(), s.data() + s.length(), uc, 2);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 12 );
s = "256";
r = std::from_chars(s.data(), s.data() + s.length(), uc, 10);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + s.length() );
s = "256**";
r = std::from_chars(s.data(), s.data() + s.length(), uc, 10);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 3 );
s = "256000**";
r = std::from_chars(s.data(), s.data() + s.length(), uc, 10);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 6 );
s = "100";
r = std::from_chars(s.data(), s.data() + s.length(), uc, 16);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + s.length() );
s = "100**";
r = std::from_chars(s.data(), s.data() + s.length(), uc, 16);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 3 );
s = "100000**";
r = std::from_chars(s.data(), s.data() + s.length(), uc, 16);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 6 );
VERIFY( uc == 9 );
unsigned long long ull = 123;
s = "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz****";
r = std::from_chars(s.data(), s.data() + s.length(), ull, 36);
VERIFY( r.ec == std::errc::result_out_of_range );
VERIFY( r.ptr == s.data() + 42 );
VERIFY( ull == 123 );
}
int
main()
{
test01();
test02();
}