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re PR libstdc++/66855 (codecvt wrong endianness in UTF-16 conversions)

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PR libstdc++/66855
	* src/c++11/codecvt.cc (__codecvt_utf8_utf16_base::do_in): Override
	endianness bit in mode.
	* testsuite/22_locale/codecvt/codecvt_utf8_utf16/66855.cc: New.

From-SVN: r225748
This commit is contained in:
Jonathan Wakely 2015-07-13 21:07:48 +01:00 committed by Jonathan Wakely
parent c05fbb626f
commit 795038b722
3 changed files with 62 additions and 1 deletions
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5
libstdc++-v3/ChangeLog
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@ -1,5 +1,10 @@
2015-07-13 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/66855
* src/c++11/codecvt.cc (__codecvt_utf8_utf16_base::do_in): Override
endianness bit in mode.
* testsuite/22_locale/codecvt/codecvt_utf8_utf16/66855.cc: New.
* include/bits/c++config (_GLIBCXX_NOEXCEPT_IF): Define.
* include/bits/forward_list.h (forward_list::swap): Make noexcept
unconditional.

6
libstdc++-v3/src/c++11/codecvt.cc
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@ -1264,7 +1264,11 @@ do_in(state_type&, const extern_type* __from, const extern_type* __from_end,
{
range<const char> from{ __from, __from_end };
range<char16_t> to{ __to, __to_end };
auto res = utf16_in(from, to, _M_maxcode, _M_mode);
codecvt_mode mode = codecvt_mode(_M_mode | (consume_header|generate_header));
#if __BYTE_ORDER__ != __ORDER_BIG_ENDIAN__
mode = codecvt_mode(mode | little_endian);
#endif
auto res = utf16_in(from, to, _M_maxcode, mode);
__from_next = from.next;
__to_next = to.next;
return res;

52
libstdc++-v3/testsuite/22_locale/codecvt/codecvt_utf8_utf16/66855.cc Normal file
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@ -0,0 +1,52 @@
// Copyright (C) 2015 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++11" }
#include <codecvt>
#include <testsuite_hooks.h>
void
test01()
{
std::codecvt_utf8_utf16<char16_t> cvt;
char16_t utf16[] = u"\ub098\ub294\ud0dc\uc624";
const char16_t* nf16;
char utf8[16];
char* nt8;
std::mbstate_t st{};
auto res = cvt.out(st, utf16, utf16+4, nf16, utf8, utf8+16, nt8);
VERIFY( res == std::codecvt_base::ok );
st = {};
char16_t buf[4] = {};
const char* nf8 = nt8;
char16_t* nt16;
res = cvt.in(st, utf8, nf8, nf8, buf, buf+4, nt16);
VERIFY( res == std::codecvt_base::ok );
VERIFY( nt16 == buf+4 );
VERIFY( buf[0] == utf16[0] );
VERIFY( buf[1] == utf16[1] );
VERIFY( buf[2] == utf16[2] );
VERIFY( buf[3] == utf16[3] );
}
int
main()
{
test01();
}