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Re: Cygwin Setup: Fatal Error: Uncaught Exception
On Tue, 24 Jan 2006, Yitzchak Scott-Thoennes wrote:
> On Mon, Jan 23, 2006 at 02:56:39PM -0500, Igor Peshansky wrote:
> > Moving to cygwin-apps, as this is likely to get technical.
> > On Mon, 23 Jan 2006, Brian Dessent wrote:
> > > Igor Peshansky wrote:
> > >
> > > > I've looked at this a bit. Here's the weird part: the error says
> > > > "Uncaught Exception", but all the throws of that exception appear
> > > > to be properly wrapped in try/catch blocks. So a simple "change
> > > > exception into an mbox" kind of solution won't work here. More
> > > > debugging is needed.
> > >
> > > The reason for the box is that the md5 checking was changed to run
> > > in a different thread than originally designed (now in the main
> > > thread instead of the download thread IIRC) and that thread does not
> > > have any particular catch handler for that exception, only the
> > > TOPLEVEL_CATCH which punts with the generic error.
> > Do you mean packagemeta::ScanDownloadedFiles() calling
> > packageversion::scan(), which calls check_for_cached()? Then yes,
> > this isn't properly wrapped in a try/catch. I'd like to verify that
> > this is the culprit (when someone sends me the corrupt tarball), but I
> > think I see a proper fix for this. Will submit a patch shortly.
> Just to reemphasize, these are *not* corrupt tarballs. They are
> tarballs exactly as downloaded, extracted, and installed. It's just
> that later the versions on the cygwin mirror became different while
> keeping the same version/filename. I verified in a couple of the cases
> that the newer version actually had executables rebuilt, with slightly
> different file sizes and timestamps.
> I don't think I have any of them around any more, but if you were to
> pick a current tarball in your local package directory and un-bzip2 it
> and re-bzip2 it with a different compression level, you should see the
What Brian said. I've since managed to reproduce the problem with a
zero-sized tarball (but you're right, anything with a mismatched size or
md5 hash would have worked -- or, rather, not worked) and posted a patch.
I would appreciate some comments on the discussion we had with Brian (on
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