Hi Jarl,
I think I just ran into this too for Fedora 22 rawhide on ARM and found
your posts...
On 30 October 2014 16:11, Jarl Gunnar Flaten
(cf. reddit thread http://www.reddit.com/r/haskell/comments/2kpsz5/ghc_problem_new_llvm_schedul... )
I am trying to compile a simple "hello world" program (test.hs). When compiling I am notified:
[1 of 1] Compiling Main ( test.hs, test.o ) You are using a new version of LLVM that hasn't been tested yet!
test: schedule: re-entered unsafely. Perhaps a 'foreign import unsafe' should be 'safe'?
Isn't working. I'm not familiar enough with neither LLVM nor Haskell to troubleshoot from either of these; I don't even know if the messages are even related.
They are related in the sense that llvm-3.5 seems to this problem and it is not officially supported by ghc-7.6 or ghc-7.8 (hence the warning). ghc-7.8 supports 3.4 and 7.6 seems to mostly work with some patches.
Can you provide more details on your environment: OS and ghc version etc? I am not sure yet what is causing this: perhaps you could try compiling with "-threaded" and see if that helps? Jens