#2912: GHCi bug: bus error when executing some gsl-random code
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Reporter: fdeweerdt | Owner:
Type: bug | Status: closed
Priority: high | Milestone: 6.10.2
Component: GHCi | Version: 6.10.1
Severity: normal | Resolution: duplicate
Keywords: | Difficulty: Unknown
Testcase: | Os: Linux
Architecture: x86_64 (amd64) |
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Changes (by simonmar):
* status: new => closed
* cc: [email protected] (added)
* resolution: => duplicate
Comment:
This is another instance of #781. The problem is caused by this reference
in the `gsl-random` package:
{{{
foreign import ccall unsafe "gsl/gsl_rng.h &gsl_rng_mt19937"
p_gsl_rng_mt19937 :: Ptr (Ptr ())
}}}
The GHCi linker on x86_64 can't handle references to static data in shared
libraries, because we only have a 32-bit field and we need a 64-bit
offset.
One way to workaround it is to use `-fPIC` when compiling gsl-random (I
tested this, it works). However, `-fPIC` is still quite experimental, so
I hesitate to recommend this as a fix. Another way to do it would be to
have a C function that returns the address of `gsl_rng_mt19937`, and
compile this with `-fPIC`.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2912#comment:3>
GHC <http://www.haskell.org/ghc/>
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