Re: dlclose() vs fork()

[Alexey Sokolov <alexey+cygwin at asokolov dot org>]

Thanks Corinna for the quick fix,
The user confirmed it's working now with the snapshot.

21.03.2017 13:42, Corinna Vinschen пишет:
> On Mar 21 09:03, Alexey Sokolov wrote:
> > Hello,
> > If the same DLL is dlopen()ed several times, dlclose() will actually
> > unload the DLL only after the same number of calls to dlclose().
> >
> > This works fine in cygwin, until we add fork().
> >
> > It looks like in the child process the counters of inherited DLLs are
> > set to 1, so the first dlclose() unloads it, causing segfault for
> > subsequent access to the unloaded code.
> > https://github.com/znc/znc/issues/1385#issuecomment-288014319 has a
> > working minimal example of this behavior.
>
> dlopen/dlclose reference counting was broken.  I applied a fix and
> uploaded new dev snapshots to https://cygwin.com/snapshots/
>
> I'm just building a 2.8.0-0.2 test release as well.
>
>
> Please test.
>
>
> Thanks,
> Corinna


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