invalid preprocessing directive

[elisehuard]

Unfortunate mixing of multiline comments and hash symbols gives this when compiling:

Data/Conduit/Internal.hs:607:4:
     error: invalid preprocessing directive
       #-}
      ^

Data/Conduit/Internal.hs:340:4:
     error: invalid preprocessing directive
      #-}
       ^

for conduit 1.0.9
Glasgow Haskell Compiler, Version 7.6.3, stage 2 booted by GHC version 7.4.2
on mac os x Maverick (10.9)

[elisehuard]

Sorry, not comments, some sort of inlining (still learning).
Actually, putting the #-} at the end of line instead of next line fixes it.

[snoyberg]

Thanks for the report, the new CPP in Maverick has caused me breakage in a few other places too.

Would it be possible to send a pull request for this change, since I'm not able to test any of the changes on my system?

[jwiegley]

I don't think the fix should be made in conduit, as there are many, many other packages that still fail due to problems like this. They are working on a GHC 7.6.4 patch that should fix this everywhere; meanwhile, you can install GCC yourself and change the settings file to use that GCC as your preprocessor instead of /usr/bin/gcc (which is actually Clang now) and that will fix the bug too. Fixing this in conduit is a tiny bandaid on a systemic problem.

[elisehuard]

That is a fair point.

[elisehuard]

Doing this worked, indeed: http://haskell-workshop.github.io/tutorials/osx/2013-10-23-mavericks-ghc.html