Wine, Windows.Forms on Linux, GC and segfaults.

[Miguel de Icaza]

Hello,

> >     The problem is that by the time that Wine has been initialized,
> > using setjmp/longjmp will always lead to a crash.  The code 
> > in pthreads
> > that performs the longjmp will first try to invoke the pthread cleanup
> > routines, and then invoke longjmp.  This never happens.
> 
> You can't and needn't link with -lpthread. Wine has its own
> pthread implmentation.
> 
> I tried your included code and it works just fine unless you
> link with -lpthread, then it crashes in the same way as in your
> attached picture. But then you should never link Wine with
> -lpthread so that is not really a bug.
> 
> Of course Wine pthread implementation it not in any way complete
> so some function might be missing and some might only be only
> partially implemented and of course some might be incorrectly
> implemented.
> 
> So please try again without linking with -lpthread.

The problem is that this is very hard for us to do as two of the
underlying libraries we are using (libmono and libgc) both link against
pthread to achieve their threading capabilities.

It might be better to investigate what are Wine's requirements for
having its own pthread implementation, and have those changed pushed to
the maintainers of pthreads.

In particular, we are interested in using WineLib, maybe it would be
possible to have WineLib use the standard pthread implementation instead
of rolling its own?

Miguel.