Andreia Gaita wrote: > While you're talking about libMonoPosixHelper.so, I've stumbled onto a > problem while trying to get System.IO.Compression to work with both > the latest and the stable versions. Any call to deflate always blows > up with an exception. I've looked at the source, and it's fine, but > the compiled library being distributed is missing some code, > specifically the create_z_stream function. > > For what I can see, the only reason this function would be empty (as > it is), is that the library is being compiled in a system without the > latest zlib library, or at least a library that's flagging this bit of > code (in zlib_macros.c) > > #if !defined(ZLIB_VERNUM) || (ZLIB_VERNUM < 0x1204) > /* Older versions of zlib do not support raw deflate or gzip */ > return NULL; > #endif > > Compiling the source makes it work fine, but all versions of this > library that I've found are broken (at least in red hat and fedora). > > On another note, This NULL return makes the managed code throw out an > OutOfMemory Exception, because it believes a null is the library > returning a no memory error. All the error codes and nice errors > structures the zlib library so helpfully provides are completely lost, > the managed code doesn't receive or use them, which is a shame. Also, > most exceptions that are being thrown out are not consistent with the > ones being thrown out by IO.Compression in .NET (they should be > consistent, right?) Is anyone actively mantaining the io.compression > area at present? I'd be happy to take it up.
Besides the problem you've discovered, there is another one with the current System.IO.Compression implementation: it doesn't work in Windows for a similar reason: zlib is not installed on the build machine. This issue is probable more complex than it appears to be: cygwin's zlib is not okay. It must be a version compiled with mingw, like the other libs the Windows Installer is deploying along with Mono. I'll file a (packaging ?) bug for this issue. Robert _______________________________________________ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
