addForeignPtrFinalizer - finalizers run in FIFO or LIFO order?

[Henning Thielemann]

On Fri, 17 Aug 2012, Edward Z. Yang wrote:

> No. 1 question: do you have a reproduceable test case of both behaviors?

Unfortunately I was not able to reduce it to a small test. Below a certain 
complexity the problem vanishes. Currently my example has many 
dependencies on external libraries (libav etc.) :-(
   Thus I hoped I could approach the problem from a different direction. If 
there are different ways to run the finalizers of a ForeignPtr then I 
could check them. I could not find something suspicious in 
base:GHC.ForeignPtr, though.