From f64f3e74b9d2260a9e7bd3cf23c2e429876b327e Mon Sep 17 00:00:00 2001 From: Paolo Carlini Date: Tue, 1 Jul 2003 19:13:01 +0200 Subject: [PATCH] re PR libstdc++/11389 (Unbuffered wfilebuf fails to read single-byte UTF-8 characters.) 2003-07-01 Paolo Carlini PR libstdc++/11389 * include/bits/fstream.tcc (underflow): For encoding() == 0 don't read more than __buflen chars. * testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-1.cc: New. * testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-2.cc: New. * testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-3.cc: New. * testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-4.cc: New. From-SVN: r68780 --- libstdc++-v3/ChangeLog | 10 +++++ libstdc++-v3/include/bits/fstream.tcc | 3 +- .../basic_filebuf/underflow/wchar_t/11389-1.cc | 49 ++++++++++++++++++++ .../basic_filebuf/underflow/wchar_t/11389-2.cc | 51 +++++++++++++++++++++ .../basic_filebuf/underflow/wchar_t/11389-3.cc | 50 +++++++++++++++++++++ .../basic_filebuf/underflow/wchar_t/11389-4.cc | 52 ++++++++++++++++++++++ 6 files changed, 214 insertions(+), 1 deletion(-) create mode 100644 libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-1.cc create mode 100644 libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-2.cc create mode 100644 libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-3.cc create mode 100644 libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-4.cc diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index fcdb9e0..10f5a40 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,3 +1,13 @@ +2003-07-01 Paolo Carlini + + PR libstdc++/11389 + * include/bits/fstream.tcc (underflow): For encoding() == 0 + don't read more than __buflen chars. + * testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-1.cc: New. + * testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-2.cc: New. + * testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-3.cc: New. + * testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-4.cc: New. + 2003-07-01 Jerry Quinn * 22_locale/num_put/put/char/7.cc: New. diff --git a/libstdc++-v3/include/bits/fstream.tcc b/libstdc++-v3/include/bits/fstream.tcc index a5510e3..e63ff8b 100644 --- a/libstdc++-v3/include/bits/fstream.tcc +++ b/libstdc++-v3/include/bits/fstream.tcc @@ -210,7 +210,8 @@ namespace std { // Worst-case number of external bytes. // XXX Not done encoding() == -1. - const streamsize __blen = __buflen * _M_codecvt->max_length(); + const int __enc = _M_codecvt->encoding(); + const streamsize __blen = __enc > 0 ? __buflen * __enc : __buflen; char* __buf = static_cast(__builtin_alloca(__blen)); __elen = _M_file.xsgetn(__buf, __blen); diff --git a/libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-1.cc b/libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-1.cc new file mode 100644 index 0000000..c4866ef --- /dev/null +++ b/libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-1.cc @@ -0,0 +1,49 @@ +// Copyright (C) 2003 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 2, 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 COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// 27.8.1.4 Overridden virtual functions + +#include +#include + +const char name_01[] = "tmp_11389-1"; + +void test01() +{ + using namespace std; + bool test = true; + + filebuf fbout; + fbout.open(name_01, ios_base::out); + fbout.sputc('a'); + fbout.close(); + + wfilebuf fbin; + locale loc(__gnu_cxx_test::try_named_locale("en_US.UTF-8")); + fbin.pubimbue(loc); + fbin.open(name_01, ios_base::in); + VERIFY( fbin.sbumpc() == L'a' ); + VERIFY( fbin.sgetc() == wfilebuf::traits_type::eof() ); + fbin.close(); +} + +int main() +{ + test01(); + return 0; +} diff --git a/libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-2.cc b/libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-2.cc new file mode 100644 index 0000000..90dfb8f --- /dev/null +++ b/libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-2.cc @@ -0,0 +1,51 @@ +// Copyright (C) 2003 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 2, 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 COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// 27.8.1.4 Overridden virtual functions + +#include +#include + +const char name_02[] = "tmp_11389-2"; + +void test02() +{ + using namespace std; + bool test = true; + + filebuf fbout; + fbout.open(name_02, ios_base::out); + fbout.sputc('a'); + fbout.sputc('b'); + fbout.close(); + + wfilebuf fbin; + locale loc(__gnu_cxx_test::try_named_locale("en_US.UTF-8")); + fbin.pubimbue(loc); + fbin.open(name_02, ios_base::in); + VERIFY( fbin.sbumpc() == L'a' ); + VERIFY( fbin.sbumpc() == L'b' ); + VERIFY( fbin.sgetc() == wfilebuf::traits_type::eof() ); + fbin.close(); +} + +int main() +{ + test02(); + return 0; +} diff --git a/libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-3.cc b/libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-3.cc new file mode 100644 index 0000000..c4b4859 --- /dev/null +++ b/libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-3.cc @@ -0,0 +1,50 @@ +// Copyright (C) 2003 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 2, 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 COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// 27.8.1.4 Overridden virtual functions + +#include +#include + +const char name_03[] = "tmp_11389-3"; + +void test03() +{ + using namespace std; + bool test = true; + + filebuf fbout; + fbout.open(name_03, ios_base::out); + fbout.sputc('a'); + fbout.close(); + + wfilebuf fbin; + locale loc(__gnu_cxx_test::try_named_locale("en_US.UTF-8")); + fbin.pubimbue(loc); + fbin.pubsetbuf(0, 0); + fbin.open(name_03, ios_base::in); + VERIFY( fbin.sbumpc() == L'a' ); + VERIFY( fbin.sgetc() == wfilebuf::traits_type::eof() ); + fbin.close(); +} + +int main() +{ + test03(); + return 0; +} diff --git a/libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-4.cc b/libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-4.cc new file mode 100644 index 0000000..00d1edc --- /dev/null +++ b/libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/11389-4.cc @@ -0,0 +1,52 @@ +// Copyright (C) 2003 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 2, 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 COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// 27.8.1.4 Overridden virtual functions + +#include +#include + +const char name_04[] = "tmp_11389-4"; + +void test04() +{ + using namespace std; + bool test = true; + + filebuf fbout; + fbout.open(name_04, ios_base::out); + fbout.sputc('a'); + fbout.sputc('b'); + fbout.close(); + + wfilebuf fbin; + locale loc(__gnu_cxx_test::try_named_locale("en_US.UTF-8")); + fbin.pubimbue(loc); + fbin.pubsetbuf(0, 0); + fbin.open(name_04, ios_base::in); + VERIFY( fbin.sbumpc() == L'a' ); + VERIFY( fbin.sbumpc() == L'b' ); + VERIFY( fbin.sgetc() == wfilebuf::traits_type::eof() ); + fbin.close(); +} + +int main() +{ + test04(); + return 0; +} -- 2.7.4