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author | Paolo Carlini <pcarlini@suse.de> | 2006-03-22 15:13:46 +0000 |
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committer | Paolo Carlini <paolo@gcc.gnu.org> | 2006-03-22 15:13:46 +0000 |
commit | d4d21a01033746a16474156ce30342683afefe3b (patch) | |
tree | 23c99d78978096a0b5127b46241f21d4d182b031 /libstdc++-v3/testsuite | |
parent | f328a23a4650e984e5b3fd92ca0c8daf2f81be00 (diff) | |
download | gcc-d4d21a01033746a16474156ce30342683afefe3b.zip gcc-d4d21a01033746a16474156ce30342683afefe3b.tar.gz gcc-d4d21a01033746a16474156ce30342683afefe3b.tar.bz2 |
re PR libstdc++/26777 (sync_with_stdio(false) triggers bug with sgetc and pubseekoff)
2006-03-22 Paolo Carlini <pcarlini@suse.de>
PR libstdc++/26777
* include/bits/fstream.tcc (basic_filebuf<>::_M_seek): Check
the return value of _M_file.seekoff.
* testsuite/27_io/basic_filebuf/seekoff/char/26777.cc: New.
From-SVN: r112286
Diffstat (limited to 'libstdc++-v3/testsuite')
-rw-r--r-- | libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/char/26777.cc | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/char/26777.cc b/libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/char/26777.cc new file mode 100644 index 0000000..7312ce2 --- /dev/null +++ b/libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/char/26777.cc @@ -0,0 +1,86 @@ +// { dg-require-fork "" } +// { dg-require-mkfifo "" } + +// 2006-03-22 Paolo Carlini <pcarlini@suse.de> + +// Copyright (C) 2006 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, +// USA. + +#include <testsuite_hooks.h> +#include <fstream> +#include <sstream> +#include <unistd.h> +#include <signal.h> +#include <fcntl.h> +#include <sys/types.h> +#include <sys/stat.h> + +// libstdc++/26777 +void test01() +{ + using namespace std; + using namespace __gnu_test; + + bool test __attribute__((unused)) = true; + + const char* name = "tmp_fifo6"; + + signal(SIGPIPE, SIG_IGN); + + unlink(name); + mkfifo(name, S_IRWXU); + semaphore s1, s2; + + int child = fork(); + VERIFY( child != -1 ); + + if (child == 0) + { + filebuf fbout; + fbout.open(name, ios_base::in | ios_base::out); + VERIFY( fbout.is_open() ); + fbout.sputn("Whatever", 8); + fbout.pubsync(); + s1.signal(); + s2.wait(); + fbout.close(); + s1.signal(); + exit(0); + } + + filebuf fbin; + fbin.open(name, ios::in); + s1.wait(); + + fbin.sgetc(); + fbin.pubseekoff(0, ios::cur, ios::in); + s2.signal(); + s1.wait(); + + ostringstream oss; + oss << &fbin; + fbin.close(); + + VERIFY( oss.str() == "Whatever" ); +} + +int main() +{ + test01(); + return 0; +} |