2010-09-22 David Krauss <potswa@mac.com>
PR libstdc++/45628
* include/bits/fstream.tcc (basic_filebuf::underflow): Add state
transition to avoid modality requiring seekoff(0,ios::cur).
(basic_filebuf::pbackfail): Likewise.
(basic_filebuf::overflow): Likewise.
(basic_filebuf::_M_seek): Avoid minor unnecessary conversion.
(basic_filebuf::seekoff): Remove code to _M_get_ext_pos; make
(0, ios::cur) a special case preserving buffer contents.
(basic_filebuf::_M_get_ext_pos): New function to obtain status
about codecvt extern_t buffer for overflow and seekoff.
* include/std/fstream (basic_filebuf::_M_get_ext_pos): Likewise.
* config/abi/pre/gnu.ver: Export new symbols.
* testsuite/27_io/basic_filebuf/seekoff/char/45628-1.cc: New,
verifies that seekoff(0, ios::cur) preserves buffers.
* testsuite/27_io/basic_filebuf/seekoff/char/45628-2.cc: Likewise.
for codecvt case. More lenient as it may still flush put area.
* testsuite/27_io/basic_filebuf/seekoff/char/4.cc: Modify to
check that seekoff is not required between read and write.
* testsuite/27_io/basic_filebuf/seekoff/wchar_t/4.cc: Likewise.
* testsuite/27_io/basic_filebuf/sync/wchar_t/1.cc: Remove.
* testsuite/27_io/basic_filebuf/sync/wchar_t/1.cc: Likewise.
* testsuite/util/testsuite_character.h (codecvt::do_length): Comply
with 22.2.1.5.2/10 "Returns ... the LARGEST value in the range..."
From-SVN: r164529
2007-02-18 Paolo Carlini <pcarlini@suse.de>
PR libstdc++/28080 (partial)
* include/bits/stl_algobase.h: Do not include <climits>, use
std::numeric_limits.
* include/bits/stl_bvector.h: Use __CHAR_BIT__.
* config/locale/gnu/codecvt_members.cc: Include <climits>.
* config/locale/generic/codecvt_members.cc: Likewise.
* include/std/string: Do not include <algorithm>; do not include
<memory>, include <bits/allocator.h> instead.
* include/ext/vstring_fwd.h: Likewise.
* include/ext/vstring_util.h: Do not include <algorithm>.
* include/tr1/hashtable_policy.h: Include <algorithm>.
* testsuite/21_strings/basic_string/replace/char/1.cc: Likewise.
* testsuite/21_strings/basic_string/replace/wchar_t/1.cc: Likewise.
* testsuite/23_containers/bitset/cons/1.cc: Likewise.
* testsuite/util/testsuite_character.h: Likewise.
* config/locale/gnu/codecvt_members.cc: Also include <cstdlib>,
for MB_CUR_MAX.
* config/locale/generic/codecvt_members.cc: Likewise.
From-SVN: r122089