#7250: Documentation of System.Mem.Weak should emphasize finalizers may be run
earlier than expected
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Reporter: edsko | Owner:
Type: bug | Status: new
Priority: normal | Component: Documentation
Version: 7.6.1 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: None/Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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The problem is mentioned in addFinalizer, but not in mkWeak; moreover, the
documentation of addFinalizer reads as if this is a problem specific to
foreign pointers, which is not (and, unrelated, ForeignPtr# does not exist
anymore).
It would be useful if the problem were highlighted in mkWeak, as it may
introduce hard to find bugs in user code in cases where finalizers that
are run too early cause problems. The behaviour of mkWeak is highly non-
obvious.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7250>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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