Damien,
It is really hard to tell anything without the ability to reproduce the
problem on other systems. Try to come up with some example which is easy to
get running AND segfaulting on other computers, so that we could play with
it. Maybe post the minimal code in separate github repo and provide the
link.
--
Best, Artem
On Thu, 21 Feb 2019 at 10:14 Damien Mattei
my code is structured like this , in summary:
-- this function will return th N°BD from Sidonie for a given name -- note: names have been standardized between Sidonie and WDS getAlphaDelta :: Connection -> String -> IO (Double,Double) getAlphaDelta conn name = do let qry_head_AlphaDelta_AngularDistance = "select alpha,delta from AngularDistance where Nom = ?" :: Query (alpha_delta_rows :: [(Double,Double)]) <- query conn qry_head_AlphaDelta_AngularDistance (Only (name::String)) -- putStrLn $ show alpha_delta_rows return (head alpha_delta_rows)
main =
do conn <- connect defaultConnectInfo { connectHost = "moita", connectUser = "mattei", connectPassword = "sidonie2", connectDatabase = "sidonie" }
-- check getAlphaDelta works:
let name3 = "A 7" putStrLn $ show name3 ad3 <- getAlphaDelta conn name3 putStr "ad3 =" putStrLn $ show ad3
this works i got result such as: "A 7" ad3 =(11297.0,-619.0)
if i move the 5 lines of code at the end of file it segfault
between the begin and end i have some DB connection and queriung , filtering, mapping...
any idea?
should i really upgrade the version of GHCI?
Damien _______________________________________________ Haskell-Cafe mailing list To (un)subscribe, modify options or view archives go to: http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe Only members subscribed via the mailman list are allowed to post.