Re: [Boost-users] [iostream] gzip filter buggy on windows

Subject: Re: [Boost-users] [iostream] gzip filter buggy on windows
From: Anders Knudby (knudby_at_[hidden])
Date: 2011-04-28 08:29:54

On Thu, Apr 28, 2011 at 8:06 AM, Bo Jensen <jensen.bo_at_[hidden]> wrote:

> In my quest of making gzip work for my application on windows, I found
> the following bug :
>
> int main(int argc, char *argv[])
> {
>  std::ofstream strm("test.gz");
>
>  boost::iostreams::filtering_ostream  sink;
>
>  /* Push gzip compressor */
>  sink.push(boost::iostreams::gzip_compressor());
>
>  /* Push file writer */
>  sink.push(strm);
>
>  #if 0
>  /* This does not work */
>  sink <<"  OBJ   N"<< std::endl;
>  #else
>  /* This works */
>  sink <<"  OBJ N"<< std::endl;
>  #endif
> }
>
>
> The first string results in a invalid gzip file i.e invalid compressed
> data--length error. I am aware this might be a bug in zib lib. It
> works on without any problems on linux.
>
> Does anyone use gzip on windows on a regular basis ?
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> Boost-users_at_[hidden]
> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>

Hi Bo, I have recently tried getting boost/gzip to work on Windows (x86) and
also run into some weird behaviour. It is chronicled in two recent posts,
"Read/write with gzip" and "Writing large binary files with boost gzip". I
can't say for sure that all my problems have been Windows issues, but others
have successfully run some of my code on Linux when I couldn't get it to
behave.

Anders