#8331: GHC fails to apply {-# SPECIALIZE #-} for dubious reasons -------------------------------------+------------------------------------- Reporter: blitzcode | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.10.1 Component: Compiler | Version: 7.8.3 Resolution: | Keywords: Differential Revisions: | Operating System: Unknown/Multiple Architecture: | Type of failure: Incorrect Unknown/Multiple | warning at compile-time Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | -------------------------------------+------------------------------------- Comment (by rwbarton): Replying to [comment:4 blitzcode]:
I'm afraid, I can't. I was able to build HEAD, but I don't know how to setup a package db containing mtl for it so I can compile the snippet.
Use `cabal install -w .../ghc/inplace/bin/ghc-stage2 mtl`. The "RULE left-hand side too complicated to desugar" warning seems to no longer trigger with HEAD, at least. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8331#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler