[GHC] #2841: Ghci + foreign export declarations result in undefined symbols

[GHC]

#2841: Ghci + foreign export declarations result in undefined symbols
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        Reporter:  fasta           |            Owner:  ezyang
            Type:  bug             |           Status:  new
        Priority:  normal          |        Milestone:  _|_
       Component:  Compiler (FFI)  |          Version:  6.10.1
      Resolution:                  |         Keywords:
Operating System:  Linux           |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown    |       Difficulty:  Unknown
       Test Case:                  |       Blocked By:
        Blocking:                  |  Related Tickets:
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Changes (by ezyang):

 * owner:   => ezyang
 * failure:   => None/Unknown


Comment:

 It's not explicitly stated anywhere, but the reason this doesn't work is
 because foreign exports are implemented using
 `__attribute__(constructor)`, but GHC's linker doesn't run the functions
 in init/init_array. #7746 is related (profiling uses init as well).  I
 believe this should work fine if you use dynamic objects, in which case
 the system dynamic linker will properly handle this invocation for you.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2841#comment:5>
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