#5365: Finalizer running prematurely in ghci
---------------------------------+------------------------------------------
Reporter: ekmett | Owner:
Type: bug | Status: new
Priority: normal | Component: GHCi
Version: 7.0.3 | Keywords: finalizers
Testcase: | Blockedby:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: Incorrect result at runtime
---------------------------------+------------------------------------------
I have been building a library for doing hash consing, but it seemed to
incorrectly finalize references to live entries in the hash cons table
when I use it from ghci.
I've distilled the problem to the following test case.
{{{
Prelude System.Mem.Weak GHC.IO> let x = let y = "foo" in (unsafePerformIO
$ addFinalizer y (putStrLn "deleted")) `seq` y
Prelude System.Mem.Weak GHC.IO> x
"foo"
deleted
Prelude System.Mem.Weak GHC.IO> x
"foo"
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5365>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
_______________________________________________
Glasgow-haskell-bugs mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
