#8054: Undefined symbol during linking ------------------------------------+------------------------------------- Reporter: case | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- On OSX, using GHC 7.6.3 and the package recursion-schemes 3.0.0.2, the following code causes the compiler to emit an error about undefined symbols. Code: {{{ import Data.Functor.Foldable x = project 1 :: Integer main = x `seq` return () }}} Error: {{{ λ ~/ ghc test.hs Linking test ... Undefined symbols for architecture x86_64: "_Main_x_closure", referenced from: _Main_main_info in test.o _Main_main_srt in test.o ld: symbol(s) not found for architecture x86_64 collect2: ld returned 1 exit status }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8054 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler