19 Mar
2009
19 Mar
'09
8:06 p.m.
On Thu, 2009-03-19 at 16:34 -0700, Don Stewart wrote:
We must have the gtk2hs team invovled in this discussion. They were using an undocumented feature. It may be trivial to fix.
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.
I had a quick look but so far I cannot see where any callback into Haskell is happening. The only interesting case I've found is one finaliser which is implemented in C and uses hs_free_stable_ptr. Duncan