Different behavior in ghci 7.8.3 vs 7.10.1?

Dominick Samperi djsamperi at gmail.com
Sat Jun 27 13:18:32 UTC 2015

In case this is not obvious, I should also note that this is a ghci
problem. When
compiled using ghc 7.10.1 there are no probelms with unresolved references.

On Sat, Jun 27, 2015 at 9:07 AM, Dominick Samperi <djsamperi at gmail.com> wrote:
> I've attached the output of ghc --info. Will have to work on
> crafting a small example...
> On Sat, Jun 27, 2015 at 8:16 AM, Sergei Trofimovich <slyich at gmail.com> wrote:
>> On Sat, 27 Jun 2015 07:59:33 -0400
>> Dominick Samperi <djsamperi at gmail.com> wrote:
>>> To test ghci 7.10.1 I compiled from source and simply placed the
>>> resulting bin in my PATH. Perhaps this is not enough?
>> Sounds right. What does 'ghc --info' show?
>>> On the second suggestion, I tried ldd and found that the undefined
>>> symbol is flagged 'B' in the nm output (.bss section).
>>> This symbol is defined in the shared library, and the output of ghc
>>> -v2 shows that this shared library is
>>> linked without problems on startup of ghci. When the Haskell/FFI
>>> function is run the symbol is undefined.
>> Can you craft a complete small example with a build script that shows the error?
>> --
>>   Sergei

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