6.10.3 plans

[Iavor Diatchki]

Hi,
Perhaps it would make sense to add something along those lines to the
documentation for Foreign.newForeignPtr as well?
-Iavor



On Mon, Apr 27, 2009 at 5:32 AM, Simon Marlow <marlowsd at gmail.com> wrote:
> On 27/04/2009 01:28, Sigbjorn Finne wrote:
>>
>> On 4/25/2009 07:16, Ian Lynagh wrote:
>>>
>>> On Fri, Apr 24, 2009 at 11:08:38AM +0100, Simon Marlow wrote:
>>>>
>>>> We do have a WARNING pragma, incedentally:
>>>>
>>>>
>>>> http://www.haskell.org/ghc/docs/latest/html/users_guide/pragmas.html#warning-deprecated-pragma
>>>>
>>>
>>> I don't think that using it for this would be a good idea, though. It
>>> would mean that people who really do want
>>> Foreign.ForeignPtr.{newForeignPtr,addForeignPtrFinalizer}
>>> would not be able to write warning-free code.
>>
>> Repeating myself, I suppose :) , but I would be happy to take that "hit"
>> for 6.10.3 if it avoids other GHC users from spending unproductive
>> time getting on top of this change. ymmv.
>
> As a compromise, how about expanding the runtime error message to make it
> clear that this is a change in 6.10.2?
>
> finalizer: error: a C finalizer called back into Haskell.
>   This was previously allowed, but is disallowed in GHC 6.10.2 and later.
>   To create finalizers that may call back into Haskll, use
>   Foreign.Concurrent.newForeignPtr instead of Foreign.newForeignPtr.
>
> Cheers,
>        Simon
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