#1037: primRepHint:VoidRep
-------------------------------+--------------------------------------------
Reporter: igloo | Owner:
Type: bug | Status: closed
Priority: normal | Milestone: 6.8
Component: Compiler (FFI) | Version: 6.6
Severity: normal | Resolution: fixed
Keywords: | Difficulty: Unknown
Os: Unknown | Testcase: ccfail001
Architecture: Unknown |
-------------------------------+--------------------------------------------
Changes (by simonpj):
* resolution: => fixed
* testcase: => ccfail001
* status: new => closed
Comment:
It makes *sense* for a foreign import to have a zero-sized return, thus
{{{
foreign import ccall foo :: Int -> State# RealWorld
}}}
but it's not clear that it's useful, and it requires some back-end (a
Hint for void types) to make it go right through the back end. It's not
clear that
we really want this facility, so rather than fixing the code
generator, I'm just making the construct illegal for now.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1037>
GHC <http://www.haskell.org/ghc/>
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