Hi, tested x86_64-linux, committed to mainline.
Thanks, Paolo. /////////////////////
2011-09-09 Paolo Carlini <paolo.carl...@oracle.com> PR libstdc++/50336 * include/bits/streambuf_iterator.h (class istreambuf_iterator): Implement LWG 445 in C++0x mode. * testsuite/24_iterators/istreambuf_iterator/requirements/dr445.cc: New.
Index: include/bits/streambuf_iterator.h =================================================================== --- include/bits/streambuf_iterator.h (revision 178712) +++ include/bits/streambuf_iterator.h (working copy) @@ -51,7 +51,13 @@ template<typename _CharT, typename _Traits> class istreambuf_iterator : public iterator<input_iterator_tag, _CharT, typename _Traits::off_type, - _CharT*, _CharT&> + _CharT*, +#ifdef __GXX_EXPERIMENTAL_CXX0X__ + // LWG 445. + _CharT> +#else + _CharT&> +#endif { public: // Types: Index: testsuite/24_iterators/istreambuf_iterator/requirements/dr445.cc =================================================================== --- testsuite/24_iterators/istreambuf_iterator/requirements/dr445.cc (revision 0) +++ testsuite/24_iterators/istreambuf_iterator/requirements/dr445.cc (revision 0) @@ -0,0 +1,27 @@ +// { dg-options "-std=gnu++0x" } +// { dg-do compile } + +// Copyright (C) 2011 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/>. + +#include <type_traits> +#include <iterator> + +using namespace std; + +// DR 445 +static_assert(is_same<istreambuf_iterator<char>::reference, char>::value, "");