Hello Don, Friday, March 20, 2009, 2:34:09 AM, you wrote:
the question is wider - how many other programs already used this behavior? it may be asked on main haskell list. what is the cost of reverting it back for 6.10.*? > 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 -- Best regards, Bulat mailto:bulat.zigans...@gmail.com _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
