X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=libstdc%2B%2B-v3%2Ftestsuite%2F27_io%2Fbasic_ifstream%2Frdbuf%2Fchar%2F2832.cc;fp=libstdc%2B%2B-v3%2Ftestsuite%2F27_io%2Fbasic_ifstream%2Frdbuf%2Fchar%2F2832.cc;h=c8556eedcfdfa9c5371de0b94d2f1b93e3963065;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=0000000000000000000000000000000000000000;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/libstdc++-v3/testsuite/27_io/basic_ifstream/rdbuf/char/2832.cc b/libstdc++-v3/testsuite/27_io/basic_ifstream/rdbuf/char/2832.cc new file mode 100644 index 00000000..c8556eed --- /dev/null +++ b/libstdc++-v3/testsuite/27_io/basic_ifstream/rdbuf/char/2832.cc @@ -0,0 +1,72 @@ +// Copyright (C) 2000, 2001, 2003, 2009 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 +// . + +// 27.8.1.7 ifstream member functions +// @require@ %-*.tst %-*.txt +// @diff@ %-*.tst %-*.txt + +#include +#include +#include + +const char name_01[] = "ifstream_members-1.tst"; +const char name_02[] = "ifstream_members-1.txt"; + +void +redirect_buffer(std::ios& stream, std::streambuf* new_buf) +{ stream.rdbuf(new_buf); } + +std::streambuf* +active_buffer(std::ios& stream) +{ return stream.rdbuf(); } + +// libstdc++/2832 +void test03() +{ + bool test __attribute__((unused)) = true; + const char* strlit01 = "fuck war"; + const std::string str00; + const std::string str01(strlit01); + std::string str02; + std::filebuf fbuf; + std::streambuf* pbasebuf0 = &fbuf; + + std::ifstream sstrm1; + // derived rdbuf() always returns original streambuf, even though + // it's no longer associated with the stream. + std::filebuf* const buf1 = sstrm1.rdbuf(); + // base rdbuf() returns the currently associated streambuf + std::streambuf* pbasebuf1 = active_buffer(sstrm1); + redirect_buffer(sstrm1, &fbuf); + std::filebuf* const buf2 = sstrm1.rdbuf(); + std::streambuf* pbasebuf2 = active_buffer(sstrm1); + VERIFY( buf1 == buf2 ); + VERIFY( pbasebuf1 != pbasebuf2 ); + VERIFY( pbasebuf2 == pbasebuf0 ); + + // How confusing and non-intuitive is this? + // These semantics are a joke, a serious defect, and incredibly lame. +} + +int main() +{ + test03(); + return 0; +} + + +