GHC 6.6 using stale stub.c files

Simon Marlow simonmarhaskell at
Mon Oct 23 10:48:44 EDT 2006

Juan Carlos Arevalo Baeza wrote:
> Simon Marlow wrote:
>> Juan Carlos Arevalo Baeza wrote:
>>>   I tried recompiling a little (big?) Win32 binding library I had 
>>> made, when the official one wasn't working for me. It had a bunch of 
>>> generated stubs files in it (I'm not 100% sure what they are for). 
>>> The problem is that, not even with -fforce-recomp (much better name, 
>>> thanx!) will GHC regenerate those files (I think that's normal), but 
>>> still it tries to use them if they are there. I get errors like these:
>> I think you are encountering this bug:
>> workaround: delete the old stub files.
>   Yes, as I said, that workaround works.
>   However, the description of the bug is incorrect. It picks up the 
> _stub.c files, not the _stub.o files, and it picks them up even if the 
> file is recompiled (and didn't re-generate the _stub.c file).
>   Bug updated. Thanx!

Now I'm surprised.  I understood bug #706 as it was, I understand the cause and 
how to fix it.  But I don't know how GHC could be recompiling the _stub.c files.

There could be two bugs here.  If you could supply us with a repro case, that 
would be very helpful (please attach it to the ticket).


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