We must have the gtk2hs team invovled in this discussion. They were using an undocumented feature. It may be trivial to fix.
--Don jnf: > > Hello Simon, > I've put a request about the issue on the gtk2hs users mailing list: > > > I've tried a gtk2hs app on ghc 6.10.2 release candidate. > > It crashes frequently and Simon (as you can read down here) assumes it > > is gtk2hs problem. > > My question is: > > Is this problem known to gtk2hs developers? > > Is it really a gtk2hs problem? > > How difficult is it to fix the problem? > > When will we have a patch to use gtk2hs with 6.10.2, > > is it already in the repo? > > However, I'm a little surprised that a little version upgrade from 6.10.1 to > 6.10.2 may break all gui apps based on gtk2hs. May it be that many more apps > are affected because of this change? What's about wxhaskell e.g.? Well, > maybe we have only few Haskell applications around, but usually I > wouldn't expect such a dramatic effect from such a moderate upgrade. Is this > fix so important to introduce it now? What does it help when it was never > officially supported if it causes such troubles? > > Jürgen > > > > Simon Marlow-7 wrote: > > > > jutaro wrote: > >> I've installed a GUI application based on gtk2hs. > >> > >> It frequently crashes with the error: > >> leksah: error: a C finalizer called back into Haskell. > >> use Foreign.Concurrent.newForeignPtr for Haskell finalizers. > >> > >> This error did never occur with the 6.10 released version. It was > >> verified > >> that this happens on different machines. I've no idea how to isolate this > >> bug. > > > > This will need to be fixed in gtk2hs. Previously GHC allowed finalizers > > to > > call back into Haskell, but this was never officially supported. Now it > > is > > officially unsupported, because finalizers created via > > Foreign.mkForeignPtr > > are run directly by the garbage collector. > > > > See > > > > http://hackage.haskell.org/trac/ghc/ticket/1364 > > > > Cheers, > > Simon > > _______________________________________________ > > Glasgow-haskell-users mailing list > > Glasgow-haskell-users@haskell.org > > http://www.haskell.org/mailman/listinfo/glasgow-haskell-users > > > > > > -- > View this message in context: > http://www.nabble.com/ANNOUNCE%3A-GHC-6.10.2-Release-Candidate-1-tp22524567p22608413.html > Sent from the Haskell - Glasgow-haskell-users mailing list archive at > Nabble.com. > > _______________________________________________ > Glasgow-haskell-users mailing list > Glasgow-haskell-users@haskell.org > http://www.haskell.org/mailman/listinfo/glasgow-haskell-users > _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
