[Boost-bugs] [Boost C++ Libraries] #2882: infinite loop when attempting to close a filtered_stream<output> with a zlib_decompressor when extra data is appended to the stream

Subject: [Boost-bugs] [Boost C++ Libraries] #2882: infinite loop when attempting to close a filtered_stream<output> with a zlib_decompressor when extra data is appended to the stream
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-03-23 21:37:37

#2882: infinite loop when attempting to close a filtered_stream<output> with a
zlib_decompressor when extra data is appended to the stream
---------------------------------------------+------------------------------
 Reporter:  Jeremy Drake <boost_at_[hidden]>  |       Owner:  turkanis 
     Type:  Bugs                             |      Status:  new      
Milestone:  Boost 1.39.0                     |   Component:  iostreams
  Version:  Boost 1.38.0                     |    Severity:  Problem  
 Keywords:                                   |  
---------------------------------------------+------------------------------
 I ran into this while attempting to port over some code from using zlib
 directly.  Apparently one of the compressed file formats contains a 4 byte
 length at the end of the zlib data.  This causes zlib to return
 Z_STREAM_END with 4 bytes still left to write.  This in turn causes an
 infinite loop in boost::iostreams::symmetric_filter::write, do to the fact
 that the return value of filter().filter is not checked.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/2882>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.