My double-conversion library links to a C++ library. If I build it and try to use it from ghci, I get a failure:

Prelude Data.Double.Conversion.Text Data.Text> :m +Data.Double.Conversion.Text Data.Text
Prelude Data.Double.Conversion.Text Data.Text> 
Leaving GHCi.
~ $ ghci
GHCi, version 7.0.2: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Prelude> :m +Data.Double.Conversion.Text Data.Text
Prelude Data.Double.Conversion.Text Data.Text> toShortest 3
Loading package double-conversion-0.2.0.0 ... can't load .so/.DLL for: stdc++ (libstdc++.so: cannot open shared object file: No such file or directory)

I can sort of work around this, but then I get a different crash:

~ $ ln -s /usr/lib64/libstdc++.so.6 libstdc++.so
~ $ LD_LIBRARY_PATH=$(pwd) ghci
GHCi, version 7.0.2: http://www.haskell.org/ghc/  :? for help
Prelude> :m +Data.Double.Conversion.Text Data.Text
Prelude Data.Double.Conversion.Text Data.Text> toShortest 3
Loading package double-conversion-0.2.0.0 ... linking ... done.
"Floating point exception (core dumped)

Unfortunately, gdb doesn't give me a useful stack trace from this :-(