From what I understand this is happening in the Foreign.C.String module but

Hey everyone, I'm looking for help with a seg fault that takes out both my ghci and darcs as well as anything that uses haskeline. A bug on the haskeline trac hasn't gotten any response so I figured I might as well figure this out myself and get ghci up and running again. Using the test program below I get the same segmentation fault, so I run it using gdb and get the following, Program received signal SIGSEGV, Segmentation fault. 0x000000000053fdce in base_ForeignziCziString_zdwa_info () My knowledge of this is very limited from here on out so here is what I was able to get together. On the 20th call of base_ForeignziCziString_zdwa_info r14 is 0 so 0x000000000053fdce <+22>: movsbq (%r14),%rax produces the segfault. thats as much as I know. Anyone have advice on where to go next? System info: Distribution: gentoo amd64 Ghc version: currently 6.12.1 (though the segfault happends on any of the ones with haskeline) Haskeline version: 0.6.2.2 Here is the test program ---------------------------------------------------------------------------------------------------- module Main where import System.Console.Haskeline import System.Environment {-- Testing the line-input functions and their interaction with ctrl-c signals. Usage: ./Test (line input) ./Test chars (character input) --} mySettings :: Settings IO mySettings = defaultSettings {historyFile = Just "myhist"} main :: IO () main = do args <- getArgs let inputFunc = case args of ["chars"] -> fmap (fmap (\c -> [c])) . getInputChar _ -> getInputLine runInputT mySettings $ withInterrupt $ loop inputFunc 0 where loop inputFunc n = do minput <- handleInterrupt (return (Just "Caught interrupted")) $ inputFunc (show n ++ ":") case minput of Nothing -> return () Just "quit" -> return () Just "q" -> return () Just s -> do outputStrLn ("line " ++ show n ++ ":" ++ s) loop inputFunc (n+1) ------------------------------------------------------------------------------------------------------------------------ Syfran