GHCi does not work on Snow Leopard

When compiling GHC as a 32-bit application on Snow Leopard (Mac OS X 10.6), the generated ghci aborts with a Bus Error (null pointer dereference) on startup (after it has loaded all packages). This happens only when GHC was compiled on Snow Leopard (not if a binary built on Leopard is used on Snow Leopard) and if GHCi is used interactively (if a set of commands is redirected into ghci —as in ghc < myscript— the problem doesn't occur).

In addition to the failure of GHCi on startup for interactive use, the following five regression tests fail when validating:

   TH_repE2(normal)               -- the failing declaration is: an_integer
   TH_repPrim(normal)             -- the failing tests is: [| D# 24.6## |]
   ann01(normal)                  -- all annotations with a Double fail
   ffi018_ghci(ghci)
   prog002(ghci)

Moreover, with WAY=ghci in codeGen/, we have the following failures:

   cg014(ghci)
   cg024(ghci)
   cg026(ghci)
   cg028(ghci)
   cg034(ghci)
   cg035(ghci)
   cg044(ghci)

Observation: All of the failing tests use 'Double'.

Workaround: For the 6.12 release, by building a 32-bit binary on Leopard for use on both Leopard and Snow Leopard, the fault on starting GHCi can be avoided. I haven't checked whether that avoids the problems with the listed regressions, too.

Trac metadata

Trac field	Value
Version	6.11
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	GHCi
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