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https://issues.apache.org/jira/browse/STDCXX-969?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Farid Zaripov resolved STDCXX-969.
----------------------------------
Resolution: Fixed
Fixed thus: http://svn.apache.org/viewvc?rev=671433&view=rev
> std::basic_filebuf<>: sync() after close() calls __rw_fseek() on closed file
> ----------------------------------------------------------------------------
>
> Key: STDCXX-969
> URL: https://issues.apache.org/jira/browse/STDCXX-969
> Project: C++ Standard Library
> Issue Type: Bug
> Components: 27. Input/Output
> Affects Versions: 4.1.2, 4.1.3, 4.1.4, 4.2.0, 4.2.1
> Environment: All
> Reporter: Farid Zaripov
> Fix For: 4.2.2
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> {code:title=test.cpp}
> #include <fstream>
> int main (int argc, char* argv[])
> {
> std::ifstream fs (argv [0], std::ios::binary);
> char c;
> fs.get (c);
> fs.close ();
> fs.sync ();
> return 0;
> }
> {code}
> In the test above the fs.sync() calls __rw_fseek(0, ...), that leads to lseek
> (-1, ...).
> The proposed patch:
> {code:title=fstream.cc.diff}
> Index: include/fstream.cc
> ===================================================================
> --- include/fstream.cc (revision 667432)
> +++ include/fstream.cc (working copy)
> @@ -106,6 +106,8 @@
> _C_file = 0;
> _C_cur_pos = _C_beg_pos = pos_type (off_type (-1));
>
> + this->setg(0, 0, 0);
> + this->setp(0, 0);
> }
>
> // rethrow the caught exception
> @@ -119,6 +121,9 @@
> // zero out the file pointer except when detaching fd
> _C_file = 0;
> _C_cur_pos = _C_beg_pos = pos_type (off_type (-1));
> +
> + this->setg(0, 0, 0);
> + this->setp(0, 0);
> }
>
> return __retval;
> {code}
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