diff options
Diffstat (limited to 'libstdc++-v3/testsuite/27_io/ifstream_members.cc')
| -rw-r--r-- | libstdc++-v3/testsuite/27_io/ifstream_members.cc | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/libstdc++-v3/testsuite/27_io/ifstream_members.cc b/libstdc++-v3/testsuite/27_io/ifstream_members.cc index 3fb7a6d1156..6a4961a82a1 100644 --- a/libstdc++-v3/testsuite/27_io/ifstream_members.cc +++ b/libstdc++-v3/testsuite/27_io/ifstream_members.cc @@ -1,4 +1,4 @@ -// Copyright (C) 2000 Free Software Foundation, Inc. +// Copyright (C) 2000, 2001 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 @@ -73,9 +73,51 @@ bool test01() return test; } +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 test02() +{ + bool test = true; + const char* strlit01 = "fuck war"; + const char* strlit02 = "two less cars abstract riot crew, critical mass/SF"; + 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() { test00(); test01(); + + test02(); + return 0; } + + + |