On Fri, Jun 01, 2007 at 10:10:53PM -0400, jeff p wrote: > Hello, > > >If -fvia-C fixes your problem, then your code has a bug, strictly > >speaking. If > >your foreign call requires some information from a header file, then the > >right > >way to call it is by making a small C wrapper function and calling that. > > > I tried to do this but couldn't. I could get GHC to compile and link > with warnings of the form: > > Warning: resolving [EMAIL PROTECTED] by linking to _my_fun > > But when I ran the executable, the system crashed at the point that a > foreign function was called. > > >Bear in mind that we'll be deprecating -fvia-C in the future, and also > >that you > >might want your code to work in GHCi too, which doesn't read any header > >files > >when compiling foreign imports. > > > I am currently developing on a windows xp machine. After a week of > fighting with FFI, I feel forced to conclude that FFI barely works > with GHC (and seems to require -fvia-C) and doesn't work at all with > GHCi (I think there is an unresolved bug about this). Am I wrong about > the state of affairs for windows?
No, it sounds like you're using the wrong import syntax. That linker warning is a dead givaway you should be using ccall, not stdcall. Stefan _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
